HomeMy WebLinkAboutCT 83-19; CALAVERA HILLS VILLAGE T; CALAVERA HILLS OFFSITE GRADING & IMPROVEMENTS; 1989-05-01_______________ ... ~ ..... \"~ ..... -IJH_"P"""""'a.::..tJt ___ "'i14 ______ -.... ,~Hl>L"U'J'·Hti .. ··!()\l,Qo,,··u»lh1'i"n"6eC't'
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Hunsaker & Associates San Diego; Inc ..
-. -. .
Planning • Engineering· Surveying
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HYDROLOGY
METHOD OF ANALYSIS
The computer generated analysis for this watershed is
consistent with current engineering standards and requirements of
San Diego. This report also contains hydraulic ·calculations for
street flow (depth) and curb inlet capacity. Hydraulic
calculations for the proposed storm drain are enclosed in this
section.
RATIONAL METHOD
The most widely used hydrologic model for estimatory watershed
peak runoff rates in the rational method, it is applied to small
urban and semi-urban areas of less than 0.5 square miles in area.
The rational method equation relates storm rainfall intensity, a
selected runoff coefficient, and drainage area to peak r~noff rate.
This relationship is expressed by the equation: Q = CIA. Where:
Q = The peak runoff rate in cubic feet per second at the
point of analysis.
C = A runoff coefficient representing the area-averaged
ration of runoff to rainfall intensity.
I = The time-averaged rainfall intensity in inches per
hour corresponding to the time of concentrations.
A = The drainage basin area in acres.
NODE-LINK STUDY
The surface area of the basin is divided into basic areas
which discharge into different designated drainage basins. These
"sub-basins" depend upon locations of inlets and ridge lines.
SUBAREA SUMMATION MODEL
This rational method modeling approach is widely used due to
. its simplicity in application, and the capability for estimating
peak runoff rates throughout the interior of a study watershed
analogous to the subarea model. The procedure for the SUbar.ea
Summation Model is as follows:
(1). Subdivide the watershed into subareas
with the initial subarea being less than
10 acres in size (generally 1 lot will
do), and the subsequent subareas
gradually increasing in size. .?\ssign
upstream and downstream nodal point
numbers to each· subarea in order to
correlate calculations to the watershed
map.
. --,'
_________ ~ _______ ~---~ ......... --...-~"l,~.
-.aQQ: "1#$1....... t
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(2). Estimate a Tc by using a nomograph or
overland flow velocity estimation.
(3). Using T, determine
values of I2 and C2.
the corresponding
Then Q = C2I 2A1 .
,
(4). Using Q, estimate the travel time between
this node and the next by Manning's
equation as applied to the particular
channel or conduit linking nodes the two
nodes. .
The nodes are joined together by links, which may be stree.t
gutter flows, drainage swales or drainage ditches. These links are
characterized by length, area, runoff coefficient and cross-
section. The Computer subarea menu is a follows: .. -., .. ,,_.
Enter upstream node number .....••••••••••.••••
Enter Downstream node number •....•....•.....•••
SUBAREA HYDROLOGIC PROCESS
1. Confluence analysis at node.
2. Initial subarea analysi~.
3. pipeflow travel time (computer estimated).
4. pipeflow travel time (user specified).
5. Trapezoidal channel travel time.
6. street flow analysis through subarea.
7. User -specified information at node.
8. Addition of sub area runoff to main line.
9. V-gutter flow through area.
Select subarea hydrologic process .•..•••......
The engineer enters in the pertinent nodes, and
then the hydrologic process.
Where two or more links join together, the node is analyzed
by the confluence method described as follows:
At the confluence point of two or more basins, the following
procedure is used to adjust the total summation of peak flow
rates to allow for differences in ~asins times of
concentrations. This adjustment is based on the assumption
that each basins hydrographs are triangular in shape.
(1). If the collection streams have the same
time of concentrations, then the Q values
are directly summed,
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___ * ________ ..... 't' ...... ".-.. ... "",.. ..... _-= _______ ..-_'_9'¥ .... :Ht\! ... ",.""'·if~ .... :q·_..,'f .... "" ..... !:,jMW)!£UW1N_y'1''''''·= ___ --.--~ilt,
1ft :n5/" ter:bt'v',..'t"1'1n' hY "'hS''''"~».l''
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(2). If the collections streams have different
times of concentrations, the smaller of
the tributary Q values may be adjusted as
follows:
( i) The most frequent case is where the
collection stream with the longer time of
concentration has the larger Q. The smaller
Q value is adjusted by the ratio of rainfall
intensities.
Qp = Qa + Qb (Ia/Ib) ; Tp = Ta
(ii) In some cases, the collection stream
with the shorter time of concentration has the
larger Q. Then the smaller Q is adjusted by
a ratio of the T values.
. Qp = Qb + Qa (Tb/Ta) ; Tp = Tb
In a similar way, the underground storm'drains are analyzed.
The data obtained from the surface model for the fiow rates present
at the inlets and collection points is input into the nodes
representing those structures. The design grades and lengths are
used to compute the capacity of the storm drains and to model the
travel time into the adjustment of the times of concentration for
downstream inlets.
REFERENCE
1. Hromadka, Theodore: COMPUTER METHODS IN URBAN HYDROLOGY:
Lighthouse Pubiications, 1983.
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CALAVERA HILLS VILLAGE "T"
Drainage from Village II Til is mainly onsi te, as the
subdivision is designed on a hill'. Flow is distril:>1.ited
between 4 storm drain systems (lines E, F, G, & H).
Hydrologio design ori teria, and general assumptions are as
follows :
o
o
o
o
Soil type assumed as "D"
100 yr. storm design
1000' street flow -maximum
Top of ourb -maximum gutter flow height
o Modified rational method used
Hydraulio oaloulation for eaoh of the 4 storm drains are
enolosed in this report.
346-24
BM:jm '
5-26-89
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C:OUfolTY OF' ~H D Xe:GD .------• --._---'----------------------.------------------------DEPARTMENT OF SANITATION &.
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U.S. DEPARTMENlr OF COMWERCE
NATIONAl. OCEANIC AHD AT~OSPIIEIUC ADCINISTRATlOK
SPECIAl. STUDIES BRANCH. OFFICE OF i'tt-OROl.OCY. l'IATIOKAl.WEATHEIt SERVICE
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APPI }X XI-~
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Directions for Application:
1) From precipitation maps determine 6 hr. and
24 hr. amounts for the selected frequency.
These maps are'printed in the County Hydrology
Manual (10, 50 and 100 yr. maps included in the
Design and Procedure Manual).
2) Adjust 6 hr. precipitation (if necessary) so
that it is within the range of 45% to 65% of
the 24 hr. precipitation. (Not applicable
to Desert)
3) Pl~t 6 hr. precipitation on the right side
of the chart.
4) Draw a line through the point parallel to.the
plotted lines •
,3 .: :::-.: .' 2) Adjusted. *p 6= ;2:~
.. . ..
. :. ;;-:. 3) t :: mi n.
:> -~ .•.. ~... "::',,:. _ C • ~ " ~.1 -_.. .. :" .. " , . 4) I = jn/hr. t3 ' '. .. -~ , ' .. , *Not A~plicable to Desert Region ~I I 1IIIIIIIIIIUII·IHltfltHlH-l+l· >< Jo-4 1_ .. __ I_ .... t_I ...... ~ .... I. -t-+-t-t-H-I-rtt·
-:f-.-IIIIIII-+-l-H-H+H .... H-H+·"_h~ .... ~.l I-M'"t-t-}11nltIJ1ttlltflttltlltlttttmflJllllllllllllltI!IIIIH rill II ttttttJ111111t11111 H-I-I I I I I t-I+l+rl "''f1:
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H 10 15 20 .;::.. 30 40 50: 1 2 3 4 5 6
Minutes Duration Hours
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APPENDIX XI
IV-A-14
Revis\3d 1/85
~.-.
Il:==================================================:======================
, UPSTREAM ELEVATION = 400.00 DOWNSTREAM ELEVATION = 381.00
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STREET LENGTH(FEET) = 140.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
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SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .25
HALFSTREET FLOODWIDTH(FEET) = 6.41
AVERAGE FLOW VELOCITY(FEET/SEC.) = 7.04
I PRODUCT OF DEPTH&VELOCITY = 1;79
STREETFLOW TRAVELTIME(MIN) = .33 TC(MIN) = 10.18
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100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.829
SOIL CLASSIFICATION IS "D" ,
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
7.45
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SUBAREA AREA (ACRES) = 5 • 2 0 SUBAREA RUNOFF (CFS) = 13 • 81
SUMMED AREA(ACRES) = 5.40 TOTAL RUNOFF(CFS) = ~4.35
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .30 HALFSTREET FLOODWIDTH(FEET) = 8.73
I FLOW VELOCITY(FEET/SEC.) = 8.16 DEPTa*VELOCITY = 2.45 \
.0200
1**************************************************************************
FLOW PROCESS FROM NODE 3.00 TO NODE 4.00 IS CODE = 4
--. -, -----------------------------------------------------------------------------
, »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<' ' I »»>USING USER-SPECIFIED PIPESIZE««<
======================================================================~===
PIPEFLOW VELOCITY(FEET/SEC.) = 8.1
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UPSTREAM NODE ELEVATION = 381.00
DOWNSTREAM NODE ELEVATION = 355.00
.,-FLOWLENGTH (FEET) = 180.00 MANNINGS N = .013
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GIVEN PIPE DIAMETER(INCH) = 18.00' NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA(CFS) = 14.35
TRAVEL TIME(MIN.) = .37 TC(MIN.) = 10.55
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~******;*******************************************************************
FLOW PROCESS FROM NODE 3.00 TO NODE 4.00 IS CODE = i
1 _------------------------------------------------------------------~------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
============================================================================
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CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MlNUTES) = 10.55
RAINFALL INTENSITY (INCH./HOUR) = 4.72
TOTAL STREAM AREA (ACRES) = 5.40
ITOTAL STREAM ~UNOFF(CFS) AT CONFLUENCE =
1 ARE:
14.35
1**************************************************************************
FLOW PROCESS FROM NODE 5.00 TO NODE 4.00 IS CODE = 2
----------------------------------------------------------------------------
tt~~~~~~:!~~!~=~~:~~~=!~!:!!~=~~~!~~!=!~!~:~!~:::::======================~=
SOIL·CLASSIFICATION IS "D" .
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I, INITIAL SUBAREA FLOW-LENGTH(FEET) = 600.00
UPSTREAM ELEVATION = 380.00
DOWNSTREAM ELEVATION = 356.00 1 ELEVATION DIFFERENCE = 24.00
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Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT
1985,1981 HYDROLOGY MANUAL
(c) copyright 1982-88 Advanced Engineering Software Cae;:;)
Ver. 4.1A Release Date: 1/09/89 Serial # 3462
Analysis prepared by:
HUNSAKER & ASSOCIATES
Irvine , Inc.
Planning * Engineering * surveying
Three Hughes * Irvine , California 92718 * (714) 583-1010
1************************* DESCRIPTION OF STUDY ************************** * 100 YEAR HYDROLOGY STUDY -CALAVERA HILLS -VILLAGE Q AND T * * CITY OF CARLSBAD *
11**************************************************************************
.FILE NAME: 346.101
ITIME/DATE OF STUDY: 14:22 8/15/1989
11~~~~-~:~~:::~~-~:~~~~~~:-~~~-~:~~~~:~-~~~~~-:~:~~::~~:--------~-----~--
1985 SAN DIEGO MANUAL CRITERIA
IbSER SPECIFIED STORM EVENT(YEAR) = 100.00
6-HOUR DURATION PRECIPITATION (INCHES) = 2.900
~PECIFIED MINIMUM PIPE SIZE(INCH) = 18.00
SPECIFIED PERCENT OF GRADIENTS(DEClMAL) TO USE FOR FRICTION SLOPE = .05"
tAN DIEGO HYDROLOGY MANUAL "C"-VALUES USED
t "**************************************************************************
LOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE ~ 2"
----------------------------------------------------------~-------------~---
IP»»RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
41[=========================================================================
SOIL CLASSIFICATION IS "D" "
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 401.00
DOWNSTREAM ELEVATION = 400.00
1 ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) = 9.853
100 YEAR RAINFALL INTENSITY.(INCH/HOUR) =.4.933
~UBAREA RUNOFF(CFS) = .54
FOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
t ************************************************************************** FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 6 ----------------------------__________________________________ L ____________ ~
I»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
--;
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URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
19.797
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
1 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 3.145
SUBAREA RUNOFF(CFS) = 5.02
TOTAL AREA(ACRES) = 2.90 TOTAL RUNOFF(CFS) = 5.02
JI****************************************~*****~***************************
FLOW PROCESS FROM NODE 5.00 TO NODE 4.00 IS CODE = 1
1I~~~~~b~;~;;~;~-~~~~~~~~~~;-;;~~~-;~~-~~;;~~~~~~~~~~~------~-----------~--
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
lI~;~;~~~~~~=;~~~~;=~;~;=;;;=~~;;;;;~;;;=;;;;~==;=~~i==~==================
. TiME OF CONCENTRATION (MINUTES) = 19.80 , .
. RAINFALL INTENSITY (INCH./HOUR) = 3.15
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TOTAL STREAM AREA (ACRES) = 2.90
TOTAL STREAM RUNOFF (CFS) AT CONFLUENCE = . 5.02
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CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
1I--~-------~~~;~-----~~~~~-------~~;~~-------------------------------------
2 5.02 19.80 3.145
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RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMs
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
17.70 14.58
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COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 17.70 TIME (MINUTES) = 10.554
TOTAL AREA(ACRES) = 8.30
J* * * * * * * ~ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * ~* * * * * *'* * * ** * * * * * * * * * * * *** *
FLOW PROCESS FROM NODE 4.00 TO NODE 6.00 IS CODE = \ 4 11~~~~~~~~~~;~-~~~~;~;;-;~;~~;~~~-;~~~-;~;~~~~~~~~---------------------~--
»»>USING USER-SPECIFIED PIPESIZE««<
~~~~~~~=~~~~~~~~~r~~~';!~~):;:~:~~~===========================7==========
DOWNSTREAM NODE ELEVATION = 329.00
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FLOWLENGTH(FEET) = 650.00 MANNINGS N =.013
GIVEN PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES 1
PIPEFLOW THRU SUBAREA(CFS) = 17.70
ItTRAVEL TIME(MIN.) = 1.92 TC(MIN.) = 12.48
J**************************************************************************
-:~~~-:~~:~~~-:~~~-~~~~-----~:~~-:~-~~~~-----~:~~-::-:~~~-:---:------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . 1========================================================================== CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 12.48
IRAINFALL INTENSITY (INCH./HOUR) = 4.24
__ /;I ,"""" ... 't"'W>.re.,, ___ "' ....... , ______ ... tGl~"""H1H'""' ... h .... f '.a.>'1r""""r1',!"'"''iN'''!''',?ftI''''St;..."W®_y"",-... _'''''!'!''''"_',=_' __ :.<
ITOTAL
TOTAL
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STREAM AREA (ACRES) = 8.30
STREAM RUNOFF(CFS) AT CONFLUENCE = 17.70
****************************************************************************
-IFLOW PROCESS FROM NODE 7.00 TO NODE 8.00 IS CODE = 2
------------------------------------------------------------------------~-
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< .
=i~~~:~~~~~~~~:~:::::::=:::::::::::=:=~::======================
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
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UPSTREAM ELEVATION = 355.00
DOWNSTREAM ELEVATION = 354.00
ELEVATION DIFFERENCE = 1.00
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URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
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9.853
.54
****************************************************************************
-IFLOW PROCESS FROM NODE 8.00 TO NODE 6.00 IS CODE = 6
-------------------------------------------------------~~----~-~----------'
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< .
~~~~~:~~~~~~~::==~~~~~=gg~~:~~~~~;::~==;;;~~=========
STREET HALFWIDTH (FEET) = 20.00 STREET CROSSFALL(DECIMAL) .. ,= . ·~··0200 FPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) 8.04
STREET FLOWDEPTH (FEET) = • 32 ::
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HALFSTREET FLOODWIDTH(FEET) = 9.88
AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.67
PRODUCT OF DEPTH&VELOCITY = 1.19
STREETFLOW TRAVELTIME(MIN) = 4.08 TC(MIN) = 13.94
I 100 YE~R RAINFALL INTENSITY(INCH/HOUR) = 3.945
SOIL CLASSIFICATION IS "D"
~INGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .~500
~UBAREA AREA(ACRES) = 6.80 SUBAREA RUNOFF(CFS) = 1~.75
SUMMED AREA(ACRES) = 7.00 TOTAL RUNOFF(CFS) = 15.30 END OF SUBAREA STREETFLOW HYDRAULICS: .
EPTH(FEET) = .38 HALFSTREET FLOODWIDTH(FEET) = 12.77
LOW VELOCITY(FEET/SEC.) = 4.37 DEPTH*VELOCITY= 1.67
*~*************************************************************************
FLOW PROCESS FROM NODE 8.00 TO NODE 6.00 IS CODE = 1
-~~~~~~;;~~;~~;-~;~;;;;~;;~-~~;;~-;~;-~~;;~~~;~;~~~~~--~------~----------~ .
»»>AND CdMPUTE VARIOUS CONFLUENCED STREAM VALUES««< .
=~~~~=;g~~~~~:~~~~~~~;~~~~;;;~===;=;;;7=====================
RAINFALL INTENSITY (INCH./HOUR) = 3.94
~OTAL STREAM AREA (ACRES) = 7.00
~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 15.30
IFONFLUENCE INFORMATION:
________________________ ~ _____________________________________ ft.
I STREAM RUNOFF TIME INTENSITY
, ~~~~~~~----~::~~-----~~~~:~-~~~:~~~~~~~------------------------------------
1 17.70 12.48 4.236
2 15.30 13.94 3.945
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS .....
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 31.94 31.77 ,
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: .
RUNOFF (CFS) = 31.94 TIME (MINUTES) = 12.477
ITOTAL AREA(ACRES) = 15.30
**************************************************************************** ~:~~~-:~~:~~~-:~~~-~~~~-----~:~~-:~-~~~~-----::~~-:~-:~~~-:---~------------
'»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
=I»»>USING USER-SPECIFIED PIPESIZE««< .
==========================================================~===============
PIPEFLOW VELOCITY(FEET/SEC.) = 10.2· .
UPSTREAM NODE ELEVATION = 329.00
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DOWNSTREAM NODE ELEVATION = 325.00
FLOWLENGTH(FEET) = 125.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1
.PIPEFLOW THRU SUBAREA(CFS) = 31.94
~RAVEL TIME(MIN.) = .20 TC(MIN.) = 12.68
11**************************************************************************
FLOW PROCESS FROM NODE 6.00 TO NODE 9.00 IS CODE = 1
----------------------------------------------------~-----------------------.»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . ~========================================================================~-
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:,
~IME OF.CONCENTRATION(MINUTES) = 12.68
~INFALL INTENSITY (INCH./HOUR) = 4.19
TOTAL STREAM AREA (ACRES) = 15.30
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 31.94
**************************************************************************** ~LOW PROCESS FROM NODE 10.00 TO NODE 11.00 IS CODE ~ 2 ~------------------------------------------------~------------------------~ »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
1I~~~~=~~;;~;~~~;~;;=~;=:~:================================================
SINGLE FAMILY-DEVELOPMENT RUNOFF COEFFICIENT = .5500
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INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 323.00
DOWNSTREAM ELEVATION = 322.00
ELEVATION DIFFERENCE = 1.00
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URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
ITOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
****************************************************************************
IFLOW PROCESS FROM NODE 11.00 TO NODE 9.00 IS CODE = 6'
JI _____________________________________________________ ---------------------
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< 11;;;;;~~=~~~;~;~~;=:====;;;~~~===~~;;;;;~~=~~~;~;~~;=:====;;~~~~=========
STREET LENGTH(FEET) = 600.00 CURB HEIGTH(INCHES) = 6.
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STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .Q200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 5.67
STREET FLOWDEPTH(FEET) = .39
I HALFSTREET FLOODWIDTH (FEET) = 1'3.35'
AVERAGE FLOW VELOCITY(FEET/SEC.) = 1.49
PRODUCT OF DEPTH&VELOCITY = .59
ISTREETFLOW TRAVELTIME(MIN) = 6.70 TC(MIN) = 16.56
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.530
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT-= .5500 I
SOIL CLASSIFICATION IS "D" .
SUBAREA AREA(ACRES) = 5.20 SUBAREA RUNOFF(CFS) = 10.09
SUMMED AREA(ACRES) = 5.40 TOTAL RUNOFF(CFS) = 10.64 l END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .46 HALFSTREET FLOODWIDTH(FEET) = 16.82
FLOW VELOCITY(FEET/SEC.) = 1.80 DEPTH*VELOCITY = .83 I .
************************************************~***************************
FLOW PROCESS FROM NODE 11.00 TO NODE 9..00 IS CODE = 1 11~~~~~~~~~~~~;~-~~~~;;~~;~;-~;;~~-;;;-;;~;~~~~;;~:~~~---------------------
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< 11~6;;~;~;~~=;~~;;;=;;;;=;~;=~;;;;;;;;;;=;;;~~7=;=~;7=====================
TIME OF CONCENTRATION(MlNUTES) = 16.56
I
RAINFALL INTENSITY (INCH./HOUR) = 3.53
TOTAL STREAM AREA (ACRES) = 5.40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 10.64
I CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
11--~-------;~~~~-----~;~~;-------~~~~;-------------------------------------
2 10.64· 16.56 3.530
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
40.90 37.53
I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) =. 40.90 TIME (MINUTES) = 12.682
TOTAL AREA(ACRES) = 20.70
I
2 STREAMS
****************************************************************************
I FLOW PROCESS FROM NODE 20.00 TO NODE 21.00 IS CODE =. 2
-----------------------------------------------------~--------------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
============================================================================
I
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00 I UPSTREAM ELEVATION = 433.00
i l
I DOWNSTREAM ELEVATION = 432.00
ELEVATION DIFFERENCE = 1.00
I
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
ITOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
]**********************************************************************~***
FLOW PROCESS FROM NODE 21.00 TO NODE I 22.00 IS CODE = 6
--------------------------------------------------------~-----------------»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
11;;;;;;~=;~;;~;~~;=:====~;;~~~===;~;;;;;;~=;~;;~;~~;=:====~~;~~~=========
STREET LENGTH(FEET) = 450.00 CURB HEIGTH(INCHES) = 6.
I
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMA~) = .0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 6.56
STREET FLOWDEPTH(FEET) = .29
HALFSTREET FLOODWIDTH(FEET) = 8.15
AVERAGE FLOW VELOCITY(FEET/SEC.) = I 4.20
PRODUCT OF DEPTH&VELOCITY = 1.21
ISTREETFLOW TRAVELTIME(MIN) = 1.79 TC(MIN) = 11.64
·--100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4.430
SOIL CLASSIFICATION IS "D"
ISINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .550.0
SUBAREA AREA(ACRES) = 4.90 SUBAREA RUNOFF(CFS) = 11.94
SUMMED AREA(ACRES) = ·5.10 TOTAL RUNOFF(CFS) = 12.48 l END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .34 HALFSTREET FLOODWIDTH(FEET) = 10.46
FLOW VELOCITY(FEET/SEC.) = 5.15 DEPTH*VELOCITY = 1.73
*,**************************************************************************
FLOW PROCESS FROM NODE 22.00 TO NODE 22.50 IS CODE = 1 -1_-----_._--------------------------------------------------------~--------. »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
===============================================================~============
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 11.64
RAINFALL INTENSITY .(INCH./HOUR) = 4.43
.:OTAL STREAM AREA (ACRES) = 5.10
II~'OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 12.48
1*************************************************************************~
FLOW PROCESS FROM NODE 22.60 TO NODE 22.70 IS CODE = 2 ----------------------------------------------------------------------------
.»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~============================================================~=========~===
SOIL CLASSIFICATION IS "D"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .550,0
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 423.00 .
DOWNSTREAM ELEVATION = 422.00
I
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
ISUBAREA RUNOFF(CFS) = .54
I
TOTAL AREA (ACRES) = .20 TOTAL RUNOFF(CFS) = .54
Jlx*************************~**********************************-*~**-*********
FLOW PROCESS FROM NODE 22.70 TO NODE 22.80 IS CODE = 6 .:..._-,-------------------------------------------------------------_ .... _-------
.»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
=================================================================~==========
39~.OO
I
UPSTREAM ELEVATION = 422.00 DOWNSTREAM ELEVATION =
STREET LENGTH(FEET) = 700.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
I
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 4.53
STREET FLOWDEPTH(FEET) = .27
HALFSTREET FLOODWIDTH(FEET) = 6.99
I
AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = .99
3.73
STREETFLOW TRAVELTIME(MIN) = 3.12 TC(MIN) = 12.98
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.130
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
SUBAREA,AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 3.70 TOTAL RUNOFF(CFS) =
7.95
8 • .49
END OF SUBAREA STREETFLOW HYDRAULICS:
I
DEPTH(FEET) = .31 HALFSTREET FLOODWIDTH(FEET) =
FLOW VELOCITY(FEET/SEC.) = 4.32 DEPTH*VELOCITY =
9.30
1.35
.0200
11*******************************************************~******************
FLOW PROCESS FROM NODE 22.80 TO NODE 22.50 IS CODE = 1 .
---------------------------------------------------~~----~--------------~--~
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
==========~================================================================~
ICONFLUE~CE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 12.98
RAINFALL INTENSITY (INCH./HOUR) = 4.13
TOTAL STREAM AREA (ACRES) = 3.70
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
2 ARE:
8.49
----------------------------------------------------------------------------
I 1
2
12.48
8.49
11.64
12.98
4.430
4.130
I
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
20.40 20.13
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I
RUNOFF(CFS) = 20.40 TIME (MINUTES) = 11.640
TOTAL AREA(ACRES) = 8.80
2 STREAMS
~**************************************************************************
FLOW PROCESS FROM NODE 22.50 TO NODE 23.00 IS CODE = 4
----------------------------------------------------------------------------
I»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
,"
I»»>USING USER-SPECIFIED PIPESIZE««<
===========================================================~================ '.
t· .IPEFLOW VELOCITY (FEET/SEC.) = 6.5
PSTREAM NODE ELEVATION = 406.00
DOWNSTREAM NODE ELEVATION =
.FLOWLENGTH(,FEET) = 500.00
~IVEN PIPE DIAMETER(INCH) =
PIPEFLOW THRU SUBAREA(CFS) =
ITRAVEL TIME(MIN.) = 1.28
351.00
MANNINGS N = .013
24.00 NUMBER OF PIPES =
20.40
TC(MIN.) = 12.92
I
1
**************************************************************************** JI:~~~-:~~;~~~-:~~~-~~~~----~~:~~-~~-~~~~----~::~~-:~~:~~~-:---:~~-~-------~
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1Irc;;;~~~;~~=~~~~~;=~;~;=;;;=i;;~;~;;~;;=;;;~~==~=;;~7=====================
TIME OF CONCENTRATION(MlNUTES) = 12.92
RAINFALL INTENSITY (INCH./HOUR) = 4.14 ~OTAL STREAM AREA (~CRES) = 8.80 ~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 20.40
I*******~**********************************'*****~**************************
FLOW PROCESS FROM NODE" '. 24 ~ 00 TO NODE 25.00 IS CODE = 2
1----------------------------------------------~---------------------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< .
=========================================================~==================
SOIL CLASSIFICATION IS "D" t URAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRATION
WITH 10-MINUTES ADDED = 12.79 (MINUTES)
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 700.00
UPSTREAM ELEVATION = 440.00
DOWNSTREAM ELEVATION = 360.00
ELEVATION DIFFERENCE = 80.00
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.168
SUBAREA RUNOFF(CFS) = 6.57
TOTAL AREA(ACRES) = 3.50 TOTAL RUNOFF(CFS) =
I
6.57
**************************************************************************** ~:~~~-:~~:~~~-:~~~-~~~~----:::~~-:~-~~~~----:~:~~-:~-:~~~-:~=~~~~~--~------
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
=~~~~~~~~~~~~~~~~::==~~~gg===~~;~~~~~~~f;::~==;;~~~=========
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
I
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 9.99
STREET FLOWDEPTH(FEET) = .38
I
HALFSTREET FLOODWIDTH(FEET) = 12.77
AVERAGE FLOW VELOCITY(FEET/SEC.) = 2.86
PRODUCT OF DEPTH&VELOCITY = 1.09
STREETFLOW TRAVELTIME(MIN) = 4.20 TC(MIN) = 17.00
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.471
SOIL CLASSIFICATION IS "D"
IRURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
, .
,.
~:
"
f
",
-=f b) II , ... ·"W~:"n( ,; • -l1ni'!b>""~" !!l''''m!w''i"'ta 'ri¢m .fPeSNMM!Fe?ftM. 1.(
I SUBAREA AREA(ACRES) = 4.40 SUBAREA RUNOFF(CFS) = 6.87
EUMMED AREA(ACRES) = 7.90 TOTAL RUNOFF(CFS) = 13.44
'ND OF SUBAREA STREETFLOW HYDRAULICS:
EPTH(FEET) = .42 HALFSTREET FLOODWIDTH(FEET) = 14.51
FLOW VELOCITY(FEET/SEC.) = 3.02 DEPTH*VELOCITY = 1.26
I
****************************************************************************
~:~~_:~~:~~~_:~~~_~~~~ ____ :~:~~_:~_~~~~_~ __ :::~~_:~_:~~~_:~_l: ___________ _
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
=========================================================================~==
.CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: ~IME OF CONCENTRATION(MINUTES) = 17.00
RAINFALL INTENSITY (INCH./HOUR) = 3.47
~OTAL STREAM AREA (ACRES) = 7.90
~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 13.44
't* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 'If * * * * * * * * * * * * * * * * * * * * * * * ~ * * * * * *** * * * * * * *'*
.'F-LOW PROCESS FROM NODE 27.00 TO NODE 28.00 IS CODE -. __ .,2 .. _ ....
------~----------------------------------------------------------~--~-------.»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< . ~=====================================================~===================
SOIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 383.00 .
DOWNSTREAM ELEVATION = 382.00 I ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
.SUBAREA RUNOFF(CFS) = .54
~OTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
~**************************************************************************
FLOW PROCESS FROM NODE 28.00 TO NODE 29.00 IS CODE = 6
----------------------------------------------------------------------------J »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< '
=======================================================~==================
UPSTREAM ELEVATION = 382.00 DOWNSTREAM ELEVATION = 351.00
I STREET LENGTH(FEET) = 980.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
I **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .38
HALFSTREET FLOODWIDTH(FEET) = 12.77
AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.34 I PRODUCT OF DEPTH&VELOCITY = 1.66
STREETFLOW TRAVELTIME(MIN) = 3.76 TC(MIN) = 13.61
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.004
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
7.60
I SUBAREA AREA(ACRES) = 6.30 SUBAREA RUNOFF(CFS) = 13.88
SUMMED AREA(ACRES) = 6.50 TOTAL RUNOFF(CFS) = 14.42
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .45 HALFSTREET FLOODWIDTH(FEET) = 16.24
IFLOW VELOCITY(FEET/SEC.) = 5.23 DEPTH*VELOCITY = 2.36
.Q200
, I
----------------------------------------~--------------------------------~-----------'~ 1-
1 ************************************************************************** FLOW PROCESS FROM NODE 29.00 TO NODE 23.00 IS CODE = 1
-----------------------------------------------------------~------------~---
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
===~=~======================================================================
I
CONFLUENCE VALUES qSED FOR INDEPENDENT ~TREAM
TIME OF CONCENTRATION(MINUTES) = 13.61
RAINFALL INTENSITY (INCH./HOUR) = 4.00
TOTAL STREAM AREA (ACRES) = 6.50
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
3 AR,E:
14.42
---------------------------------------------------------------~------------
1 1
2
3
20.40
13.44
14.42
. . ,
12.92
17.00
13.61
4.141
3.471
4.004
I
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:.
45.60 43.03 45.79
I
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS: ..
RUNOFF (CFS) = . 45.79 TIME (MINUTES) = 13.615
TOTAL AREA(ACRES) = . 23.20 .
3 STREAMS
I********************************************~*****************************
FLOW PROCESS FROM NODE 23.00 TO NODE 30.00 IS CODE = 4
11;~~~~~;;;~;;-;~;;;~;;-;~;;~;~;;-;~~~-;~;~;~~~~~~------~------~~---------
»»>USING USER-SPECIFIED PIPESIZE««<
1I;~;;;~;;=~;~;~~;;7;;;;/;;~~)=:===;~;======================================
UPSTREAM NODE ELEVATION = 351.00
DOWNSTREAM NODE ELEVATION = 347.00
I
FLOWLENGTH(FEET) = 80.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = . 30.00 NUMBER OF PIPES = 1
PIPEFLOW THRU SUBAREA(CFS) = 45.79
ITRAVEL TIME(MIN.) = .14 TC(MIN.) = 13.76
)
**************************************************************************
FLOW PROCESS FROM NODE 23.00 TO NODE 30.00 IS CODE::::: \ 1
---------------~--------------------------~------------~--------------------. »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . 1I~~;;~;;;~;=~~~;;;=;;;;=;~;=i;;;;;;;;;;=;;;;~==~=~;7==============:::::===~==
TIME OF CONCENTRATION(MINUTES) = 13.76
I
RAINFALL INTENSITY (INCH./HOUR) = 3.98
TOTAL STREAM AREA (ACRES) = 23.20
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 45.79
JI**************************************************************************
'-FLOW PROCESS FROM NODE 32.00 TO NODE 33.00 IS CODE =---,'2·'· "
11------------------------------------------------~----------~-~---------~--
I»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
1i~!~~~~~~~~~~~~::~::::::=:::::::::::=:=~::::======================
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
1 UPSTREAM ELEVATION = 355.00
DOWNSTREAM ELEVATION = 354.00
ELEVATION DIFFERENCE = 1.00
'I· URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR)'= 4.933
SUBAREA RUNOFF(CFS) = .54 1 TOTAL AREA (ACRES) = • 20 TOTAL RUNOFF (CFS) =
9.853
.54
****************************************************************************
,. FLOW PROCESS FROM NODE 33.00 TO NODE 31.00 IS CODE = 6
------------------------------------------------------------~-------------
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
I--===========================~============================================== UPSTREAM ELEVATION = 354.00 DOWNSTREAM ELEVATION = 348.50
STREET LENGTH(FEET) = 720.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) = .0200
I
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW (CFS)' = 2.47
STREET FLOWDEPTH(FEET) = .34
I
HALFSTREET FLOODWIDTH(FEET) = 10.46
AVERAGE FLOW VELOCITY (FEET/SEC.) = 2.03'
PRODUCT OF DEPTH&VELOCITY = .68
I
STREETFLOW TRAVELTIME (M'IN) = 5.90 TC (MI.N) == 15.75
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.645
SOIL CLASSIFICATION IS "D"
I
· SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 1.90 SUBAREA RUNOFF(CFS) = .3.81
SUMMED AREA(ACRES) = 2.10 TOTAL RUNOFF(CFS) = 4.35
.~ND OF SUBAREA STREETFLOW HYDRAULICS:
.-!IEPTH (F~ET) = .39 HALFSTREET FLOODWIDTH (FEET) =. 13.35 __ .. >_ •••
FLOW VELOCITY(FEET/SEC.) = 2.29 DEPTH*VELOCITY = .90
JI***************************************************************.***********
FLOW PROCESS FROM NODE 31.00 TO NODE 30.00 IS CODE = 1
°1-----------------------------------------------------------------------~--»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
1f~~;;~;;;~;=;~~;;;=;;;~=;~;=~;~;;;;~;;;=;;;;~==;=~;7======================
TIME OF CONCENTRATION(MINUTES) = 15.75 .
RAINFALL INTENSITY (INCH./HOUR) = 3.65
I
TOTAL STREAM AREA (ACRES) = 2.10
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 4.35
'I CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
----------------------------------------------------------------------~-----I 1
2
45.79
4.35
13.76
15.75
3.978
3.645
,IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
1,
IVARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
49.78 46.32
I
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 49.78 TIME (MINUTES) = 13.758
TOTAL AREA(ACRES) = 25.30
1 . ****************************************************************************
FLOW PROCESS FROM NODE 35.00 TO NODE 36.00 IS CODE = 2 iI~~~~~~~~~;~~-;;~~~~-~;~~~~~-;~;~;;~-~~~;;~;~~~~~------------~--------~--
============================================================================
I SOIL CLASSIFICATION IS "D"
RURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500 .
NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRATION
1-WITH 10-MINUTES ADDED = 11.12 (MINUTES)
INITIAL SUBAREA FLOW-LENGTH(FEET) = 200.00
UPSTREAM ELEVATION = 440.00
DOWNSTREAM ELEVATION = 420.00 1 ELEVATION DIFFERENCE = 20.00
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.563
SUBAREA RUNOFF(CFS) = 2.05
ITOTAL AREA(ACRES) = 1.00 TOTAL RUNOFF(CFS) = 2.05 .
J******************,********************************************************
FLOW PROCESS FROM NODE 36.00 TO NODE 37.00 IS CODE = 4 . .
-----------------------------------------------------------~-------~------
»>~>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
I »»>USING USER-SPECIFIED PIPESIZE««<
================================================================~=========
DEPTH OF FLOW IN 18.0 INCH PIPE IS 4.9 INCHES
I
PIPEFLOW VELOCITY(FEET/SEC.) = 5.2
. UPSTREAM NODE ELEVATION = 420.00
DOWNSTREAM NODE ELEVATION = 392.00
I
FLOWLENGTH(FEET) = 100.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA(CFS) = 2.05
TRAVEL TIME(MIN.) = .32 TC(MIN.) = 11.44
I
1
******************************************************~*********************
I FLOW PROCESS FROM NODE 36.00 TO NODE 37.00 IS CODE = 1 --------------------------------------------------------------------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
iI~~~~g~g~~~~~~:~~~~~:~~f~~~~~~~:-S;~~~==~=~=====================
RAINFALL INTENSITY (INCH./HOUR) = 4.48
I
TOTAL STREAM AREA (ACRES) = 1.00
TOTAL STREAM RUNOFF (CFS) AT CONFLUENCE = 2 • 0'5
11************************************************************************** FLOW PROCESS FROM NODE 37.10 TO NODE 37.20 IS CODE = 2
. . . ----------------------------------------------------------------------------I »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<, '
=========================================================~=============~~~
SOIL CLASSIFICATION IS "D"
IRURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
I NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRATION
WITH 10-MINUTES ADDED = 11.64 (MINUTES) I INITIAL SUBAREA FLOW-LENGTH(FEET) = 350.00
UPSTREAM ELEVATION = 450.00
DOWNSTREAM ELEVATION = 410.00
I
ELEVATION DIFFERENCE = 40.00
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.431
SUBAREA RUNOFF(CFS) = 5.98 I TOTAL AREA(ACRES) = 3.00 TOTAL R~NOFF(CFS) = 5.98
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * ~ * * * * * * * * *-*.* * Jl:~~~-:~~~~~~-:~~~-~~~~----:::~~-:~-~~~~----:::~~-:~-~~~~-:---j~-----------
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< 1
1r;;;;;;~=;~;~~;~;;=:====~~;~~~===~~;;;;;;~=;~;~~;~;;=:====;;~~~~========~
STREE~ LENGTH(FEET) = 500.00 CURB HEIGTH(INCHES) = 6.' .
'ISTREET HALFWIDTH(FEET} = 20.00 STREET CROSSFALL(DEClMAL) = .0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 7.73
STREET FLOWDEPTH(FEET) = .31 ., .
HALFSTREET FLOODWIDTH(FEET) = 9.30
AVERAGE FLOW·VELOCITY(FEET/SEC.) = I 3.93
PRODUCT OF DEPTH&VELOCITY = 1.23
ISTREETFLOW TRAVELTIME (MIN) = 2.12 TC(MIN) = 13.76
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.977
SOIL CLASSIFICATION IS nD"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICI·ENT = .5500
SUBAREA AREA(ACRES) = 1.60 SUBAREA RUNOFF(CFS) ==
SUMMED AREA(ACRES) = 4.60 TOTAL RUNOFF(CFS) =
l END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .32 HALFSTREET FLOODWIDTH(FEET) = 9.88
3.50
9.48
FLOW VELOCITY(FEET/SEC.) = 4.33 DEPTH*VELOCITY:::: 1.40
I'*******~********************'*****************************,*****************
FLOW PROCESS FROM NODE 37.20 TO NODE 37.00 IS CODE = 1 11~~~~~~;;~;;~~;-~;~;;;;~;;~-;;;;~-;;;-~;;;~~~;~~~~~~~---------------------
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
1~~;;~;;;~;=~~~;;;=;;;~=;;;=~;~;;;;~;;;=;;;;~==;=~;7====~==;,============== ",
TIME OF CONCENTRATION(MlNUTES) = 13.76 .
I RAINFALL INTENSITY (INCH./HOUR) = 3.98
TOTAL STREAM AREA (ACRES) = 4.60
TOTAL STREAM RUNOFF (CFS) AT CONFLUENCE = 9 • 48 ....
I
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
I---------------------------------~~~------------------------~-------------1 2.05 11.44 4.480
- 2 9.48 13.76 3.977 " .-_ ......... .
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
10.47 11.30
ICOMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
___ -.; ______________________________ .... ___ IIiIIIIIi ...... -IllI .. ;
I
RUNOFF (CFS) = 11.30
IfOTAL AREA (ACRES) =
TIME (MINUTES) =
5.60
13.760
,
**************************************************************************** JI:~~~-:~~~~~~-:~~~-~~~~----:~:~~-:~-~~~~----:~:~~-:~-~~~~-:---:------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1Ir=======================================~=================================
~ONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 13.76
~INFALL INTENSITY (INCH./HOUR) = 3.98
.!~TAL STREAM AREA (ACRES) = 5.60
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 11.30
JI*************************************************************~************
FLOW PROCESS FROM NODE 39.00 TO NODE 40.00 IS CODE = 2
1--------------------------------------------------------------~-----------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< .
============================================================================
. SOIL CLASSIFICATION IS "D" .
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 414.00
I
DOWNSTREAM ELEVATION = 413.00
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =. 9.853
I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
JI**************************************************************************
FLOW PROCESS FROM NODE 40.00 TO NODE 38.00 IS CODE = 6
1-------~---------------------------~--------------------------------------»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
============================================================================
UPSTREAM ELEVATION = 413.00 DOWNSTREAM ELEVATION =
ISTREET LENGTH(FEET) = 400~00 CURB HEIGTH(INCHES) = 6.
392.00
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
I
**TRAVELTIME COMPUTED USING MEAN ~LOW(CFS)
STREET FLOWDEPTH(FEET) = .30
HALFSTREET FLOODWIDTH(FEET) = 8.73
4.59
PRODUCT OF DEPTH&VELOCITY = 1.38 I
AVERAGE FLOW VELOCITY(FEET/SEC.) =
STREETFLOW TRAVELTIME(MIN) = 1.45 TC(MIN) = 11.30
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.515
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I SUBAREA AREA(ACRES) = 2.80 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 3.00 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
4.04
6.95
7.50
I DEPTH,(FEET), = .35 HALFSTREET FLOODWIDTH(FEET) = 11.04
FLOW VELOCITY(FEET/SEC.) = 5.61 DEPTH*VELOCITY = 1.95
.0200
It**************************************************************************
I FLOW PROCESS FROM NODE 40.00 TO NODE 38.00 IS CODE = \1
================================================================~==~==~=====
.CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
~IME OF CONCENTRATION(MINUTES) = 11.30
RAINFALL INTENSITY (INCH./HOUR) = 4.51
~OTAL STREAM AREA (ACRES) = 3.00
.~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
.STREAM RUNOFF TIME INTENSITY ~UMBER (CFS) (MIN.) (INCH/HOUR)
2 ARE:
7.50
------------------------------------------------------------~---------------
I 1
2
11.30
7.50 ,
13.76
11.30
3.977
4.515
~INFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
ARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
17.91 17.45
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
~UNOFF(CFS) = 17.91 TIME (MINUTES) = 13.760
~OTAL AREA(ACRES) = 8.60
2 STREAMS
1* *.* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * *
FLOW PROCESS FROM NODE 38.00 TO NODE 40.50 IS CODE = 1
-----------------------------------------------------~----------------------'.»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< JIb===================================================================~=====
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
~IME OF CONCENTRATION(MINUTES) = 13.76
~INFALL INTENSITY (INCH./HOUR) =3.98
TOTAL,STREAM AREA (ACRES) = 8.60
ITOTAL S~REAM RUNOFF(CFS) AT CONFLU~NCE = 17.91
******************************************************~**i****************~*
IFLOW PROCESS FROM NODE 41.00 TO NODE 42.00 IS CODE = 2 ~-------------------------------------------------~--~~--------------~----»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~~~~=~~;;~;~~~;~~;=~;=:;:===========~===========~======~=============~===
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 423.00
DOWNSTREAM ELEVATION = 422.00
ELEVATION DIFFERENCE = 1.00
I
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY (INCH/HOUR)' = 4.933
SUBAREA RUNOFF(CFS) = .54
IFOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
**************************************************************************** JI:~~~-:~~~~~~_:~~~_~~~~ ____ ~::~~_:~_~~~~ ____ ~::~~_:~_~~~~_: ___ ~ ___________ _
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
11================================================~===========F=============
----------------------------------~------------------------------------~----------~
I UPSTREAM ELEVATION = 422.00 DOWNSTREAM ELEVATION = 394.0,0
, STREET LENGTH(FEET) = 1100.00 CURB HEIGTH(INCHES) = 6.
ISTREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =.0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = ~ ,
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 10.36
I
STREET FLOWDEPTH(FEET) = .42
HALFSTREET FLOODWIDTH(FEET) = 14.51
AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.66
'I PRODUCT OF DEPTH&VELOCITY = 1.94
. STREETFLOW TRAVELTIME(MIN) = 3.94 TC(MIN), = 13.79
-100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.972
I
S-OIL CLASSIFICATION IS liD"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
, SUBAREA AREA(ACRES) = 8.90 SUBAREA RUNOFF(CFS) =
I
SUMMED AREA(ACRES) = 9.10 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
19.44
19.98
DEPTH (FEET) = .51' HALFSTREET FLOODWIDTH(FEET) = 19.13
IFLOW VELOCITY(FEET/SEC.) = 5.29 DEPTH*VELOCITY = 2.69
*********~******************************************************************
)FLOW PROCESS FROM NODE 42.50 TO NODE 40.50 IS CODE = 1 ,
"----------------------------------------------~----------------------~----»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
I »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< .
==============================================~====~======================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM' 2 ARE: -
I
,TIME OF CONCENTRATION (MINUTES) = 13.79
RAINFALL INTENSITY (INCH./HOUR) = 3.97'
TOTAL STREAM AREA (ACRES) = 9.10
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 19.98
I CONFLUENCE INFORMATION: . "
STREAM RUNOFF TIME INTENSITY
I NUMBER. (CFS) (MIN.) (INCH/HOUR) '_
---------------------------------------------------~-------~-~------------1 17.91 13.76 3.977
2 19.98 13.79 3.972
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 4 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 37.87 37.87
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 37.87 TIME (MINUTES) = 13.788
ITOTAL AREA(AC~ES) = 17.70
**************************************************************************** I FLOW PROCESS FROM NODE 40.50 TO NODE 43.00 IS CODE = 4 '
---------------------------------------------------------~------~---------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
,»»>USING USER-SPECIFIED PIPESIZE««< '
. ========================================================~=================
PIPEFLOW VELOCITY(FEET/SEC.) = 12.1
UPSTREAM NODE ELEVATION = 387.00 I DOWNSTREAM NODE ELEVATION = 357.00
FLOW LENGTH (FEET) = 330.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 24.00 NUMBER OF PIPES = 1 I PIPEFLOW THRU SUBAREA (CFS) = 37 . 87
I,
TRAVEL TIME(MIN.) = .46 TC(MIN.) = 14.24
JI***********************************************~**************************
FLOW PROCESS FROM NODE 40.50 TO NODE 43.00 IS CODE = 1
1--------------------------------------------------------------~-----------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
==================================================================~====~====
I
CONFLUENCE VALUES USED FOR INDEPENDENT S~REAM
TIME OF CONCENTRATION(MINUTES) = 14.24
RAINFALL INTENSITY (INCH./HOUR) = 3.89
TOTAL STREAM AREA (ACRES) = 17.70
1 ARE:
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 37.87
1************************************************************~*************
FLOW PROCESS FROM NODE 44.00 TO NODE 44.50 IS CODE = '2
-------------------------------------------------------------------~--------
~~~~~~;;~~~;;~~~~~~~!~~~~~=~~~:::~========================
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 350.00
UPSTREAM ELEVATION = 392.00
DOWNSTREAM ELEVATION = 357.00
I
ELEVATION DIFFERENCE = 35.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) = 16.052
* CAUTION : SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH __ ,_ ." .......
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3~601
SUBAREA RUNOFF(CFS) = 1.98
TOTAL AREA(ACRES) = 1.00 TOTAL RUNOFF(CFS) = 1.98
I ****************************************************************************
FLOW PROCESS FROM NODE 44.50 TO NODE 43.00 IS CODE = 1 11~~~~~~;~~~;~;;-~;~;;;;~;;;-;;;;~-;;;-~;;;~~;;~;~~~~~----------~----------
============================================================================
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 16.05
RAINFALL INTENSITY '(INCH./HOUR) = 3.60
2 ARE:
I
TOTAL STREAM AREA (ACRES) = 1.00
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 1.98
1**************************************************************************
FLOW PROCESS FROM NODE 44.80 TO NODE 45.00 IS CODE = 2 .
I »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< '
==========================================================================
SOIL CLASSIFICATION IS "D"
I
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 900.00
UPSTREAM ELEVATION = 445.50
DOWNSTREAM ELEVATION = 354.00 I ELEVATION DIFFERENCE = 91. 50
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTE~) =
*CAUTI,ON: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
I DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
11.876
"
I *CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.373
SUBAREA RUNOFF(CFS) = 12.27
TOTAL AREA(ACRES} = 3.30 TOTAL RUNOFF(CFS} = 12.27
*'~*********************************************************;;~';;~~*********
FLOW PROCESS FROM NODE 45.00 TO NODE 43.00 IS CODE = l' t----------------------------------------~-------------------------------~-»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< ,
11~~;;~~;;~;=;~~~;;=~;;;=;~;=~;;;;;;;;;;=;;;;~==;=~;7===============~====~,
TIME OF CONCENTRATION(MINUTES) = 11.88
TOTAL STREAM AREA (ACRES) = 3.30 I RAINFALL INTENSITY (INCH./HOUR) = 4.37
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 12.27
I
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER, (CFS) (MIN.) (INCH/HOUR)
1I--~-------;;~;;-----~~~;~-------;~;;~-------------------------------------
2 1.98 16.05 3.601 .
3 12.27 11.88 4.373
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA'USED FOR 3 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I '50.61 '47.14 47.57
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 50.61 TIME (MINUTES) -, 14.244
ITOTAL AREA(ACRES) = 22.00
**************************************************************************** JFLOW PROCESS FROM NODE 43.00 TO NODE 47.00 IS CODE = 4 '
--------~----------------------------------------------~~~-~--------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
.»»>USING USER-SPECIFIED PIPESIZE««<
iI============================================~=============================
PIPEFLOW VELOCITY(FEET/SEC.) = 16.1
I
UPSTREAM NODE ELEVATION = 354.00
DOWNSTREAM NODE ELEVATION = 353.00
FLOWLENGTH(FEET) = 80.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH} = 24.00 NUMBER OF PIPES' = 1
I
PIPEFLOW THRU SUBAREA(CFS) = 50.61
TRAVEL TIME(MIN.) = .08 TC(MIN.} = 14.33
~**************************************************************************
FLOW PROCESS FROM NODE 43.00 TO NODE 47.00 IS CODE = 1
1I~~~~~~!!~~~!~!:~~~!~!~~!~~:!~~!~:!~~:~~~!~~!~~!::::::::::::::::::::::::::
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
I TIME OF CONCENTRATION(MINUTES) = 14.33
RAINFALL INTENSITY (INCH./HOUR) = 3.87
TOTAL STREAM AREA (ACRES) = 22.00
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 50.61
:.,
___ .m_~_, ________ f~= _______________________________________________ ._._' __ ' __ r _______________ ~~
I
t***********************************************************~**************
LOW PROCESS FROM NODE 47.20 TO NODE 47~40 IS CODE = 2 .
----------------------------------------------------~-----------~-----------~»»RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~=============================================================F===========
SOIL CLASSI,FICATION IS "D" -'-
. rOMMERCIAL DEVELOPMENT RUNOFF COEFFICIEN::r' = .8500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 800.00
UPSTREAM ELEVATION = 380.00
DOWNSTREAM ELEVATION = 367.50
I
ELEVATION DIFFERENCE = 12.50
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
11.687
I
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.419
SUBAREA RUNOFF(CFS) = 4.88
ITOTAL AREA(ACRES) = 1.30 TOTAL RUNOFF(CFS) = 4.88
****************************************************************************
-IF LOW PROCESS FROM NODE 47.40 TO NODE 47.00 IS CODE = 4
--------------------------------------------------------------------~-----
»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
=I »»USING USER-SPECIFIED PIPESIZE««<
===========================================================~=============
PIPEFLOW VELOCITY(FEET/SEC.) = 2.8 .
UPSTREAM NODE ELEVATION-= 368.00 I DOWNSTREAM NODE ELEVATION = 353.00
FLOWLENGTH(FEET) = 600.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES = l
I PIPEFLOW THRU SUBAREA(CFS) = 4.88
TRAVEL TIME(MIN.) = 3.62 TC(MIN.) = 15.31
t **************************************************************************
FLOW PROCESS FROM NODE 47.40 TO NODE 47.00 IS CODE =1 _
-~--------------------------------------------------------------------------
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< -
=========================================================~========~=========.
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 15.31
--RAINFALL INTENSITY (INCH./HOUR) = 3.71
TOTAL STREAM AREA (ACRES) = 1.30
ITOTAL STREAM ~UNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
2 ARE:
4.8S
----------------------------------------------------------------------------
I 1
2
50.61
4.88
14.33
15.31
3.87?
3.713
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
I
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
55.29 53.38
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
IRUNOFF(CFS) = 55.29 TIME (MINUTES) = 14.327
, ...... , ,
, I
_________________________________ .......... ....". ... --........... -5!'1l
1
ITOTAL AREA(ACRES) = 23.30
~**************************************************************************
FLOW PROCESS FROM NODE 47.00 TO NODE 49.00 IS CODE = 1
,----------------------------~---------------------------------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< ' .
============================================================================
I
CONFLUENCE VALUES USED FOR INDEPENDENT ~TREAM
TIME OF CONCENTRATION(MINUTES) = 14.33
RAINFALL INTENSITY (INCH./HOUR) = 3.87
TOTAL STREAM AREA (ACRES) = 23.30
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1 ARE:
55.29 \ -\ ...
1*****************************************************-********************
FLOW PROCESS FROM NODE 50.00 TO NODE 51.00 IS CODE = 2
tt;~~~~~~;;;;~~;;~~~~~:!~~!~!~~!!~::~~=======================
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 1500.00
UPSTREAM ELEVATION = 381.00
-DOWNSTREAM ELEVATION = 354.00
. ELEVATION DIFFERENCE = 27.00
I URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
9.467
NOMOGRAPH DEFINITION". EXTRAPOLATION OF NOMOGRAPH USED.
I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 5:062
SUBAREA RUNOFF(CFS) = 8.17
TOTAL AREA(ACRES) = 1.70 TOTAL RUNOFF(CFS) = 8.17
~**************************************************************************
FLOW PROCESS FROM NODE 51.00 TO NODE 49.00 IS CODE = 1 I-------~------------------------------------------------------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
11~~;;~;;;~;=;~~;;;=;;;~=;~;=~;~;;;;~;;;=;;;;~==;=~;7~====================
TIME OF CONCENTRATION(MINUTES) = 9.47
I
RAINFALL INTENSITY (INCH./HOUR) = 5.06
TOTAL STREAM AREA (ACRES) = 1.70
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 8.17
I CONFLUENCE, INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
1f--~-------~~~;~-----~~~;;-------;~;;~--------------~'~---------------------
2 8.17 9.47 5.062
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
61.55 50.50 I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 61.55 TIME (MINUTES) = 14.327
TOTAL AREA(ACRES) = 25.00
I
, I
i '
i i , I , ,
::
I
****~************************************************.**********************
IWLOW PROCESS FROM NODE 49.00 TO NODE 52.00 IS CODE = 4 . ~---------------------------------------------------------~~~~~~~~~-------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
IP»»USING USER-SPECIFIED PIPESIZE««<
4Ir========================================================================~
PIPEFLOW VELOCITY(FEET/SEC.) = 12.5 .
. UPSTREAM NODE ELEVATION = 354.00
IbOWNSTREAM NODE ELEVATION = 297.00 ~LOWLENGTH(FEET) = 700.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1
~IPEFLOW THRU SUBAREA(CFS) = 61.55
~RAVEL TIME(MIN.) = .93 TC(MIN.) = 15.26
JI************************************************************************** --~LOW PROCESS FROM NODE 49.00 TO NODE 52.00 IS CODE = 1
--------------------------------------------------------~---~--------------~
ib»»DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< ~================================================~=======================~
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: ~IME OF 'CONCENTRATION(MINUTES) = 15.26
~INFALL INTENSITY (INCH./HOUR) = . 3.72
TOTAL STREAM AREA (ACRES) = 25.00
ITOTAL.STREA,M RUNOFF(CFS) AT CONFLUENCE ,,;, 61.55
**************************************************************************** .~~~-:~~:~~~-:~~~-~~~~----~:.:~~-:~-~~~~----~~.:~~-:~-~~~~'-:---~ ... -----------
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~~~~=~~;;~;~~~;~~;=~;=~~~==================~=============================
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500 .
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 320.00
DOWNSTREAM ELEVATION = 319.00
ELEVATION DIFFERENCE = 1.00
I URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
. 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS)' = .54
IFOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
**************************************************************************** J FLOW PROCESS FROM NODE 54.00 TO NODE 54.50 IS CODE = 6
------------------------------------------------------------~--------~----
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
11;;;;;;~=;~;~~;;~;=:====;~;~~~===~~;;;;;;~=;~;~~;;~;=:====;;;~~~=====~===
STREET LENGTH(FEET) = 360.00 CURB HEIGTH(INCHES) = 6. .
I STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) = .0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 7.28
I
STREET FLOWDEPTH(FEET) = .34
HALFSTREET FLOODWIDTH(FEET) = 10.46
AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = 2.02
6.01
ISTREETFLOW TRAVELTIME(MIN) = 1.00 TC(MIN) = 10.85
i , ,
i
.: I
--------------=-----------------------------------------------~----------------------~
I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.635 .~OIL CLASSIFICATION IS "D" ~INGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 5.30 SUBAREA RUNOFF(CFS) = 13.51
14.05 . ~PMMED AREa(ACRES) = 5.50 TOTAL RUNOFF(CFS) =
~ND OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .40 HALFSTREET FLOODWIDTH(FEET) = 13.93
rLOW VELOCITY (FEET/SEC.) = 6.83 DEPTH*VELOCITY = ., 2.76
*********************************************************************~****** JFLOW PROCESS FROM NODE 54.50 TO NODE 52.00 IS CODE = 1"
----------------------------------------------------------------~---------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
.»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
1Ir==================================================~====~==~===========~==
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
~ME OF CONCENTRATION(MINUTES) = 10.85
INFALL INTENSITY (INCH./HOUR) = 4.64
OTAL STREAM AREA (ACRES) = 5.50
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 14.05
IkONFLUENCE INFORMATION: .
STREAM RUNOFF TIME INTENSITY
~UMBER (CFS) (MIN.) (INCH/HOUR)
11---------------------------------------------~-----------~----------------1 61.55 15.26 3.721 .
2 14.05 10.85 4.635 ~INFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 S~REAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
• 72.83 63.46
~OMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 72.83 TIME (MINUTES) = 15.258
ITO TAL A~EA(ACRES) = 30.50
****************************************************************************
IWLOW PROCESS FROM NODE 52.00 TO NODE 54.60 IS CODE = 4 ~------------------------------------------------------------------------~ »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
. "'»»USING USER-SPECIFIED PIPESIZE««< --_.",,,... . ..
4IC=============================================~=======~================~==
PIPEFLOW VELOCITY(FEET/SEC.) = 14.8
UPSTREAM NODE ELEVATION = 297.00
IDOWNSTREAM NODE ELEVATION = 255.00
FLOWLENGTH(FEET) = 750.00. MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1
.PIPEFLOW THRU SUBAREA(CFS) = 72.83
~RAVEL TIME(MIN.) = .84 TC(MIN.) = 16.10
iI***********************************************************************~**
FLOW PROCESS FROM NODE 52.00 TO NODE 54.60 IS CODE = 1
-----------------------------------------------~------------~---------------J »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
==================================================~================~~=====
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
ITIME OF CONCENTRATION(MINUTES) = 16.10
.,
-" .
--------------------------------------------------------------------~-------------~ I RAINFALL INTENSITY (INCH./HOUR) = 3.59
TOTAL STREAM AREA (ACRES) = 30.50
ITOTAL STREAM RUNOFF(CFS) AT ~ONFLUENCE = 72.83
1**************************************************************************
FLOW PROCESS FROM NODE 54.70 TO NODE 54.80 IS CODE = 2
----------------------------------------------------------------------------
=I»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< \ ========================================~===========~=====================
SOIL CLASSIFICATION IS "D"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 295.00 ,
DOWNSTREAM ELEVATION = 294.00
I
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I
SVBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54 .--... ,--._.
1*******~******************************************************************
FLOW PROCESS FROM NODE 54.80 TO NODE 55.00 IS CODE = 6
~»»COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
==========================================================================
PSTREAM ELEVATION = 294.00 DOWNSTREAM, ELEVATION =, 255.00
STREET LENGTH(FEET) = '900.00 CURB HEIGTH(INCHES) = 6.
I STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) = .0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 7.48
I STREET FLOWDEPTH(FEET) = .36
HALFSTREET FLOODWIDTH(FEET) = 11.62
AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.10
I
PRODUCT OF DEPTH&VELOCITY = 1.83
STREETFLOW TRAVELTIME(MIN) = 2.94 TC(MIN) = 12.80
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.168
I
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA (ACRES) = 6 . 0 0 SUBAREA RUNOFF (CFS), =
I
SUMMED AREA(ACRES) = 6.20 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
13.75
14.30'
DEPTH (FEET) = .43 HALFSTREET FLOODWIDTH(FEET) = 15.09
IFLOW VELOCITY~FEET/SEC.) = 5.97 DEPTH*VELOCITY = 2.56
**************************************************************************** J FLOW PROCESS FROM NODE 55.00 TO NODE 54.60 IS CODE = 1
------------------------------------------------------~-------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
• »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
11=================================================================~========
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 12.80
IRAINFALL INTENSITY (INCH./HOUR) = 4.17
TOTAL STREAM AREA (ACRES) = 6.20
I
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 14.30
f'
• I ,I
"
i·
,',
~" .
,',-
.......... e_*' __ • __ ................ M_:6'*1.1~~ ....... _. ___________________ ,, __ ... 'S' .... tIr;'_',.. .... "'tI ..... • ... r .... )'_11 .... "_ ..... 3 .... ' -p----lJi:
I-CONFLUENCE INFORMATION: --,,' ..... .
STREAM RUNOFF TIME INTENSITY '. l NUMBER (CFS) (MIN.) (INCH/HOUR)
---------------------------------------------------------------------~----
1 72.83 16.10 3.594 I 2 14.30 12.80 4.168
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
85.16 77.10 '
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 85.16 TIME (MINUTES) = 16.100
I TOTAL AREA(ACRES) = 36.70
r **************************************************************************
FLOW PROCESS FROM NODE 54.60 TO NODE 56.00 IS CODE = 4 . ----------------------------------------------------------------------------
»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< . l »»>USING USER-SPECIFIED PIPESIZE««<
=======================================================================~==
PIPEFLOW VELOCITY(FEET/SEC.) = 12.0
I
UPSTREAM NODE ELEVATION = 255.00
DOWNSTREAM' NODE ELEVATION = 240.00
FLOWLENGTH ( FEET) = ·:'320 • 00 MANNINGS N = . 013
I
GIVEN PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA(CFS) = 85.16
TRAVEL TIME(MIN.) = .44 TC(MIN.) = 16.54
1
IL**************************************************************************
FLOW PROCESS FROM NODE 54.60 TO NODE 56.00 IS CODE = 1
r--------------------------------------------------------------~---~-------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
==============================================~=======================~=====
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 16.54
RAINFALL INTENSITY (INCH./HOUR) = 3.53
TOTAL STREAM AREA (ACRES) = 36.70
I TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1 ARE:
85.16
r**************************************************************************
FLOW PROCESS FROM NODE 57.00 TO NODE 58.00 IS CODE = 2
----------------------------------------------------------~-----~-----------
IF~~~~~!!::~~!~=~~~~~~=:~:::!~=~~~~~!=~!~:~:~~~~~~========================
SOIL CLASSIFICATION IS "0" ,
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500 \
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 260.00
DOWNSTREAM ELEVATION = 259.00
I
ELEVATION DIFFE~ENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
I*-* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ~ ~.*.~. ~ ~ * * * * * * * * * *
____________ ' _____ r~~_~A ______________ n_4~ ___ ~_u_~._Wt_~;&_· _________________ 'M_1!t_W_t=_W~.~~'~. ______ ~ __ --~~.~
I FLOW PROCESS FROM NODE 58.00 TO NODE 59.00 IS CODE ::i:: (5
---------------------------------------------------------------------------~ J »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
============================================~=============================
UPSTREAM ELEVATION = 259.00 DOWNSTREAM ELEVATION =. 240.00
I
STREET LENGTH(FEET) = 550.00 CURB HEIGTH(IN.CHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .02.00
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
I
**TRAVELTIME COMPUTED USING MEAN FLOW{CFS) = 4.95
S';rREET FLOWDEPTH (FEET) = . 34 '
HALFSTREET FLOODWIDTH(FEET) = 10.46
AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.08
I
PRODUCT OF DEPTH&VELOCITY = 1.37
STREETFLOW TRAVELTIME(MIN) = 2.25 TC(MIN) = 12.10
I
lob YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.321
SOIL CLASSIFICATION IS liD"
. SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 3.70 SUBAREA RUNOFF(CFS) ~
I
SUMMED AREA(ACRES) = 3.90 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
8.79
9.34
DEPTH(F~ET) = .39 HALFSTREET FLOODWIDTH(FEET) = 13.3~
IFLOW VELOCITY(FEET/SE~.) = 4.91 DEPTH*VELOCITY == 1.93
]
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** ** * * * * ** * * '* * **.* * * * * * * * ** * * * '* *.** * ** ***
FLOW PROCESS FROM NODE 59.00 TO NODE 56.00 IS CODE = \ 1
------------------------------------------------------------------------~-
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
I»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
9IF=========================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
EIME OF CONCENTRATION(MINUTES) = 12.10
INFALL INTENSITY (INCH./HOUR) = 4.32
OTAL STREAM AREA (ACRES) = 3.90
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 9.34 IcONFLUE~CE INFORMATION:
'-STREAM RUNOFF TIME INTENSITY --... " .. ,.
IrUMBER (CFS) (MIN.) (INCH/HOUR) .
~----------------------------------------------------------~-~---~-----~--1 85.16· 16.54 3.532
2 9.34 12.10 4.321 ~INFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RU~OFF VALUES ARE AS FOLLOWS: I 92.79 78.93
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 92.79 TIME (MINUTES) = 16.543
IFOTAL AREA(ACRES) = 40.60
]
*********************************************'*****************************
FLOW PROCESS FROM NODE 60.00 TO NODE 61.00 IS CODE = 2
---------------------------------------------------------~----------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
1IIs~~~=~~;;~;~~~;~;;=~;=:;:=================================================
MULTI-UNITS DEVELOPMENT RUNOFF COEFFICIENT = .7000 ..
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 800.00
I
'.
, '
."
-------------.. -,--~~-------------
I UPSTREAM ELEVATION = 320.00
DOWNSTREAM ELEVATION = 315.00
I ELEVATION DIFFERENCE = 5.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
24.845
I
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.717
SUBAREA RUNOFF(CFS) = 15.02
USED.
ITOTAL AREA(ACRES) = 7.90 TOTAL R~NOFF(CFS) = 15.02-
**************************************************************************** JI:~~~-:~~:~~~-:~~~-~~~~--~-~::~~-:~-~~~~----~~:~~-:~-:~~~-:---:~---~-------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1==========================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: ._ -" _._ ._. .. -. _
TIME OF CONCENTRATION(MINUTES) = 24.84
I
RAINFALL INTENSITY (INCH./HOUR) = 2.72
TOTAL STREAM AREA. (ACRES) = 7.90
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 15.02
JI*******~******************************************************************
FLOW PROCESS FROM NODE" 63.00 TO NODE 62.00 IS CODE = 2
1--------------------------------------------------------------------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
============================================================================
SOIL CLASSIFICATION IS "D"
I INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 900.00
UPSTREAM ELEVATION = 317.00
I
DOWNSTREAM ELEVATION = 309.00
ELEVATION DIFFERENCE = 8.00"
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
I
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 5.329
I
SUBAREA RUNOFF(CFS) = 4.05
TOTAL. AREA (ACRES) = .80 TOTAL RUNOFF(CFS) =
8.741
USED.
4.05
1 ****************************************************~*********************
FLOW PROCESS FROM NODE 63.00 TO NODE 62.00 IS CODE = 1 -_ ----------------------------------------------------------------------------
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
==========~=======================================~====~=============~======
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 8.74
RAINFALL INTENSITY (INCH./HOUR) = 5.33
TOTAL STREAM AREA (ACRES) = .80
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 4 •. 05
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY . . I NUMBER (CFS) (MIN.) (INCH/HOUR) .
-----------------------------------------------------~--------------------
I
1
2
15.02
4.05
24.84
8.74
2.717
5.329
-:111;
I
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
17.09 11.71
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I RUNOFF(CFS) = 17.09 TIME (MINUTES) = 24.845
TOTAL AREA(ACRES) = 8.70
t-**************************************************************************
FLOW PROCESS FROM NODE 62.00 TO NODE 64.00 IS CODE = 1 ----------------------------------------------------------------------------J»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< ..'
========================================================~=================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
~.IME OF CONCENTRATION(MINUTES) = 24.84
~INFALL INTENSITY (INCH./HOUR) = 2.72
TOTAL STREAM AREA (ACRES) = 8.70
ITOTAL-STREAM RUNOFF(CFS) AT CONFLUENCE = 17.09
**********************************************************-******************
-IFLOW PROCESS FROM NODE 65.00 TO NODE 66.00 .IS CODE = 2
------------------------------------------------~-----------------~-------»»>RATIONAL METHOD -INITIAL SUBAREA ANALYSIS««<
~~~~=~~~~~;~~~;~~;=~~=~~~================================================
-SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 284.00
DOWNSTREAM ELEVATION = 283.00
ELEVATION DIFFERENCE = 1.00
I
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
9.853
SUBAREA RUNOFF(CFS) = .54
ITOTAL A~EA{ACRES) = .20 TOTAL RUNOFF{CFS) = .54
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * *-* * * * ** *** * * * * * * * * * * * ** * * * *-*
IWLOW PROCESS FROM NODE 66.00 TO NODE 67.00 IS CODE = 6 ~----------------------------------------~-----------~------------------~-»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
~;~;;;~=;~;~~;~~;=:====;;;~~~===~~;;;;;;~=;~;~~;!~;=:====;h;~~~=========
STREET LENGTH(FEET) = 1200.00 CURB HEIGTH(INCHES) = 6. -
.eTREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
IFPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW{CFS) = 3.95
I
STREET FLOWDEPTH(FEET) = .35
HALFSTREET FLOODWIDTH(FEET) = 11.04
AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = 1.03
2.96
IiTREETFLOW TRAVELTIME(MIN) = 6.76 TC(MIN) = 16.62
__ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.521
SOIL CLASSIFICATION IS "D" _ ~INGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
iGUBAREA AREA(ACRES) = 3.50 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 3.70 TOTAL RUNOFF(CFS) =
liND OF SUBAREA STREETFLOW HYDRAULICS:
6.78
7.32
,-
>.
'.
I rill PTH (FEET) = .42 HALFSTREET FLOODWIDTH(FEET) = 14.51
FLOW VELOCITY(FEET/SEC.) = 3.29 DEPTH*VELOCITY = 1.37
I
****************************************************************************
-IFLOW PROCESS FROM NODE 67.00 TO NODE 64.00 IS CODE '= 1 '
-----------------------------------------------~-----~--------~-----------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
=I»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
-================================================================~=========,
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 16.62
I
RAINFALL INTENSITY (INCH./HOUR) = 3.52
TOTAL STREAM AREA (ACRES) = 3.70
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 7.32
ICONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY ,
NUMBER (CFS) (MIN.) (INCH/HOUR) , iI--~-------~;~~~-----;~~;~-------;~;~;-------------------------------------
2 7.32 16.62 3.521 IRAINFAL~-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I
22.74 20.50
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = '22.74 TIME (MINUTES) = 24.845
I TOTAL AREA(ACRES) = '12.40
****************************************************************************
~:~~~-:~~:~~~-:~~~-~~~~----~~:~~-:~-~~~~----~~::~-:~-:~~~-:~~~~~~~~~-------
»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
~;;;~~~;;~~;;~7;;;;;;~~;:::~;~::~==========--======================
UPSTREAM NODE ELEVATION = 309.00
I
DOWNSTREAM NODE ELEVATION = 299.00
FLOWLENGTH(FEET) = 180.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES = 1
I PIPEFLOW THRU SUBAREA(CFS) = 22.74
TRAVEL TIME(MIN.) = .23 TC(MIN.) = 25.08
t **************************************************************************
FLOW PROCESS FROM NODE 67.40 TO NODE 67.60 IS CODE = 2
-----------------------------------------------------------------~----------
.»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~==========================================================================
S'OIL CLASSIFICATION IS "0"
I RURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRATION
WITH 10-MINUTES ADDED = 14.03 (MINUTES) .
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 1000.00
UPSTREAM·ELEVATION = 390.00
DOWNSTREAM ELEVATION = 300.00
ELEVATION DIFFERENCE = 90.00 I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.928
____________________ s_. ____________________________________________________ ~------------~
1
SUBAREA RUNOFF(CFS) = 1 TOTAL AREA(ACRES) =
12.02
6.80 TOTAL RUNOFF(CFS) = 12.02
**************************************************************************** I FLOW PROCESS FROM NODE 67.60 TO NODE 61-.70 IS CODE = l'
----------------------------------------------------~---------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1r~~;;~;~;~~=;~~;~;=;;;;=;~;=~;;~;;;;~;;=;;;~~==~=~~7=====================
TIME OF CONCENTRATION(MINUTES) = 14.03 .
_RAINFALL INTENSITY (INCH. /HOUR) = 3 .93 __ .. , ..... 1 TOTAL STREAM AREA (ACRES) = 6.80
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 12.02
1***********************************************************************~**
FLOW PROCESS FROM NODE 70.00 TO NODE 67.70 IS CODE = 2
[---------------------------------------------------------~----------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
--==========================================================================
SOIL CLASSIFICATION IS "D"
1 INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 1200.00
1
I
UPSTREAM ELEVATION = 350.00
DOWNSTREAM ELEVATION = 300.00
ELEVATION DIFFERENCE = 50.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) =
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
7.795
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
I
· 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 5.738
SUBAREA RUNOFF(CFS) = 9.81
TOTAl;J AREA,(ACRES) =:= 1.80 TOTAL RUNOFF(CFS) = 9.81 .
Il******~*******************************************************************
FLOW PROCESS FROM NODE 70.00 TO NODE 67.70 IS"CODE = 1 1_-----------------------------------------------------~-------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
1t~~;;~;~;~~=;~~;;;=;;~;=;~;=~;;;;~;;~;;=;;;~~==;=~~7=====================
TIME OF CONCENTRATION(MINUTES) = 7.79
1 RAINFALL INTENSI~Y (INCH./HOUR) = 5.74
TOTAL STREAM AREA (ACRES) = 1.80
TOTAL STREAM 'RUNOFF(CFS) AT CONFLUENCE = 9.81
1 CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
It--~-------~;~~;-----~~~~;--~----;~~;~------------------------~------------
2 9.81 7.79 5.738
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
18.73 18.04 1 COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
~'""*""'"tT$*'ctrl"m!lt!l!«!"'*"""~~_~~'_'. ____________________ "'_W ..... ·W .... b'NiIl<Ii'n .... · .. _m_''''''em .... · i .... *t ... tt .... "= ... M_·. ____ ....... -.~
I RUNOFF (CFS) = 18.73
ITOTAL AREA (ACRES) =
TIME (MINUTES) =
8.60
14.030
****************************************************************************
JFLOW PROCESS FROM NODE 67.70 TO NODE 67.20 IS CODE = 4 --------------------------------------------------------------r-----------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< i
=I»»>USING USER-SPECIFIED PIPESIZE««< '
-=======================================~================================~=
PIPEFLOW VELOCITY(FEET/SEC.) = 10.6
UPSTREAM NODE ELEVATION = 310.50
I DOWNSTREAM NODE ELEVATION = 310.00
FLOWLENGTH(.FEET) = 40.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES = 1
I
PIPEFLOW THRU SUBAREA(CFS) = 18.73
TRAVEL TIME(MIN.) = .06 TC(MIN.) = 14.09
iI**************************************************************************
FLOW PROCESS FROM NODE 67.80 TO NODE 67.90 IS CODE = 2
-----------------------------------------------------------~------~---------J »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< ==========================================~===============================
SOIL CLASSIFICATION IS "D"
I
-INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 750.00
UPSTREAM ELEVATION = 354.60
DOWNSTREAM ELEVATION = 327.00
I ELEVATION DIFFERENCE = 27.60
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 6.139.
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
I
DEFINITION. EXTRAPOLATION' OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NO~OGRAPH USED.
SUBAREA'RUNOFF(CFS) = 5.72 I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.694
TOTAL AREA(ACRES) = .90 TOTAL RUNOFF(CFS) = 5.72
J*************************************************,********.***~*************
FLOW PROCESS FROM NODE 67.90 TO NODE 67.91 IS CODE = 4
1------------------------------------------------------------~-------~----~ »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< .
»»>USING USER-SPECIFIED PIPESIZE««<
1I;~;;;~~;=~;~~~~;;7;;;;/;;~~)=~===;~;======================================
UPSTREAM NODE-ELEVATION = 327.00
DOWNSTREAM NODE ELEVATION = 312.00
IFLOWLENGTH(FEET) = 350.00 MANNINGS N = .013 ~IVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF ,PIPES = 1--"-"-
PIPEFLOW THRU SUBAREA(CFS) = 5.72
ITRAVEL TIME(MIN.) = 1.80 TC(MIN.) = 7.94
J**************************************************************************
FLOW PROCESS FROM NODE 67.90 TO NODE 67.91 IS CODE = 1 . .
--' ---------------------------------------------------------------------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< 1=================================================:-==========='===,=========="';
". ,
ICONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 7.94
I
RAINFALL INTENSITY (INCH./HOUR) = 5.67
. TOTAL STREAM AREA (ACRES) = .90
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 5.72
I . .
****************************************************************************
I:~~~-:~~~~~~-:~~~-~~~~----~~':::-~~-~~~~-':---~:'::~-:~-~~~~-:---:---.---------
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
============================================================================
I
SOIL CLASSIFICATION IS "D"
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 320.00
I
UPSTREAM ELEVATION = 325.00
.. DOWNSTREAM ELEVATION = 310.00
ELEVATION DIFFERENCE = 15.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 3.947
I
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
TIME OF CONCENTRATION ASSUMED AS 5-MINUTES
I
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 7.641
SUBAREA RUNOFF(CFS) = 2.90
TOTAL AREA(ACRES) = .40 TOTAL RUNOFF(CFS) = 2.90
JI**********************.****************************************************
FLOW PROCESS FROM NODE· 67.92 TO NODE 67·.91 IS CODE = 1 1I;~~~~~~~~;~~;~-~~~~;~~~~~;-~;;~~-;;;-~;~;L~~~~~~~~~~------------~~-~-----
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
1I~~~;~;;~~;=;~~;;;=;;;~=;~;=i~~;;;~~;~;=;;;;~==;=~7=============~=======
TIME OF CONCENTRATION(MlNUTES) = 5.00
RAINFALL INTENSITY (INCH./HOUR) = 7.64
ITOTAL STREAM AREA (ACRES) = .40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 2.90
I
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) . (MIN.) (INCH/HOUR)
1I--~--------~~;;------;~~~-------~~~;~------------------~------------~-----
2 2.90 5.00 7.641
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
7.88 7.15
I
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 7.88 TIME (MINUTES) = 7.940
TOTAL AREA~ACRES) = 1.30
JI******************************************************~***~********~******
FLOW PROCESS FROM NODE 67.91 TO NODE 67.20 IS CODE = 1 .
1_-------------------------------------------------------------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
=====================================================================?======
ICONFLUEN.CE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
.,
i
j . ,.
l
l
b:I LLZI
I
TIME OF CONCENTRATION (MINUTES) = 7.94
-:
INFALL INTENSITY (INCH./HOUR) = 5.67
OTAL STREAM AREA (ACRES) = 1.30
OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 7.88
J*-* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *** * ** * ** * * * **** ** * * *~** *** * * *
FLOW PROCESS FROM NODE 64.00 TO NODE 67.20 IS CODE = 7
;Ir---------------------------------------~---------------------------------.»»>USER SPECIFIED HYDROLOGY INFORMATION AT NODE««<
==================================================================~===?=====
DSER-SPECIFIED VALUES ARE AS FOLLOWS: ~C(MIN) = 25.08 RAIN INTENSITY(INCH/HOUR) = 2.70 ~OTAL AREA(ACRES) = 12.40 TOTAL RUNOFF(CFS) = 22.74
JI***********************************************************************~**
FLOW PROCESS FROM NODE 64.00 TO NODE 67.20 IS·CODE = 1
1I~~~~~~;;~;;~~;-~;~;;;;~;;~-~~~;~-;~;-~~;;~~;;;;~~~~~---------------------
=====================================================================~======
ttCONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
IME OF CONCENTRATION(MINUTES) = 25.08
INFALL INTENSITY (INCH./HOUR) = 2.70
TOTAL STREAM AREA (ACRES) = 12.40
IFOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = . 22.74
1*********************************************************~*******~********
FLOW PROCESS FROM NODE 67.70 TO NODE 67.20 IS CODE = 7
------------------------------------------------------~------------~--------»»>USER SPECIFIED HYDROLOGY INFORMATION AT NODE««< ~;;;:;;;~~;~;~=;~~;;;=~;=~;=;~~~~;;7=============================~=======
TC(MIN) = 14.09 RAIN INTENSITY(INCH/HOUR) = .3.92
ITOTAL A~EA(ACRES) = 8.60 TOTAL RUNOFF(CFS) = 18.73
]
************************************************************************** FLOW PROCESS FROM NODE 67.70 TO NODE 67.20 IS CODE = 1· ------------------------------------------------------~--------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
J »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< .
===================================================================~======
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
I
TIME OF CONCENTRATION(MINUTES) = 14.09
RAINFALL INTENSITY (INCH./HOUR) = 3.92
TOTAL STREAM AREA (ACRES) = 8.60
I
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
18.73
-INUMBER (CFS) (MIN.) (INCH/HOUR) . --------------------------------------------------------------------------
1 7.88 7.94 5.670 \
I 2 22.74 25.08 2.700
3 18.73 14.09 3.917
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS
IVARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
. i
t' ,
I 31.65 39.40 39.85
tCOMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
UNOFF(CFS) = 39.85 TIME (MINUTES) = 14.090
OTAL AREA(ACRES) = 22.30
J* '* * * * * * * * * * * * * * * ** * * * * * * * * * * * * * * * * * * * * * * ** * ** * * * ** * '* * *,* ** * * ** * * * * * * * * * * * * *
FLOW PROCESS FROM NODE 67.20 TO NODE 68.00.IS CODE = 4
~----~----~---------------------------------------------------~-----------»»COMPUTE,PIPEFLOW TRAVELTIME THRU SUBAREA«<~<
»»USING USER-SPECIFIED PIPESIZE««<
======================================================~===~====~========~=== t IPEFLOW VELOCITY(FEET/SEC.) = 12.7
PSTREAM NODE ELEVATION = 299.00
DOWNSTREAM NODE ELEVATION =
~LOWLENGTH(FEET) = 380.00
~IVEN PI~E DIAMETER (INCH) =
PIPEFLOW THRU SUBAREA(CFS) =
ITRAVEL TIME(MIN.) = .50
276.00
MANNINGS N = .013
24.00 NUMBER OF PIPES =
39.85
TC(MIN.) = 14.59
1.
**************************************************************************** jIt~~~-:~~:~~~-:~~~-~~~~----~~:~~-:~-~~~~----:::~~-:~-:~~~-:---~------------
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~~~~=~~;;~;~~~;~;;=~;=:~:=================~==============================
, SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.60
UPSTREAM ELEVATION = 321.00
DOWNSTREAM ELEVATION = 320.00
ELEVATION DIFFERENCE = 1.00
I
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
9.85.3
SUBAREA RVNOFF(CFS) = .54
IFOTAL A~EA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
*************************************************************~************** .tLOW PROCESS FROM NODE 73.00 TO NODE 74.00 IS CODE = 6 .
---------------------------------------------~----------~--------~-------»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
1IG;;;;;~=;~;;~;~~;=:====;;~~~~=~=~~;;;;;;~=;~;;~;~~;=:====;~;~~~=========
STREET LENGTH(FEET) = 300.00 CURB HEIGTH(INCHES) :::; 6. .
I
'STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL,(DECIMAL) '-=-'~-0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 2.25 '
STREET FLOWDEPTH(FEET) = .30
HALFSTREET FLOODWIDTH(FEET) = 8.73
AVERAGE FLOW VELOCITY(FEET/SEC.) = I 2.55
PRODUCT OF DEPTH&VELOCITY = .77
ISTREETFLOW TRAVELTIME(MIN) = 1.96 TC(MIN) = 11.81
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.389
S'OIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 1.40 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 1.60 TOTAL RUNOFF(CFS) =
lEND OF SUBAREA STREETFLOW HYDRAULICS:
3.38
3.92
I' . 'F
"
..... _~'rl_'**""'". · .... 'w __ r_",."· ... W·""'bt'"""· '",,,,,,!"""\r,()'~' ................... ' '_ ..... ~, '"""""-~~-------.... ---".,,:
IDEPTH(FEET) = .• 35 HALFSTREET FLOODWIDTH(FEET) = 11.04
IFLOW VELOCITY(FEET/SEC.) = 2.93 DEPTH-VELOCITY = 1.02
****************************************************************************
-IFLOW PROCESS FROM NODE 74.00 TO NODE 75.00 IS CODE = 1 '.
----------------------------~---------------------------------~-----------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1--========================================~=================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 11.81 ,.
RAINFALL INTENSITY (INCH./HOUR) = 4.39
I
TOTAL STREAM AREA (ACRES) = 1.60
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 3.92
1** * * * * * * * * * ,* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * ~ ** * * *** * * * * * * * * ** * ** '
FLOW PROCESS FROM NODE 76.00 TO NODE 77.00 IS CODE = 2 .
---------------------------------------------------------~------------------J »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< " '
=======================================================~~=~~====~=========
SOIL C~SSIFICATION IS "D"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
.. ~ UPSTREAM ELEVATION = 327.00
DOWNSTREAM ELEVATiON = 326.00
I ELEVATION'DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW (MINUTES) = 9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) =. .20 TOTAL RUNOFF(CFS) = .54
-I************************************************~*************************.
FLOW PROCESS FROM NODE 77.00 TO NODE 75.00 IS CODE = 6
I~~~~~~~~~~~~~~~:~~~~~~~~~~i!~:~:=:=:::=:::=::: .
, UPSTREAM ELEVATION = 326.00 DOWNSTREAM ELEVATION = 315.00
I
STREET LENGTH(FEET) = 720.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) =
I
SPECIFIED NUMBER OF· HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .31
HALFSTREET FLOODWIDTH(FEET) = 9.30
. AVERAGE FLOW VELOCITY(FEET/SEC.) = 2.58
I
PRODUCT OF DEPTH&VELOCITY = .81
STREETFLOW,TRAVELTIME(MIN) = 4.66 TC(MIN) = 14.51
I
100 YEAR RAINFALL INTENSITY{INCH/HOUR) = 3.844
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY ,DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
SUBAREA AREA(ACRES) = 4.20 SU~AREA RUNOFF{CFS) =
SUMMED AREA (ACRES) =. 4 • 40 TOTAL RUNOFF (CFS ) =
END OF SUBAREA STREETFLOW HYDRAULICS: .
5.07
8.88
9.42
DEPTH (FEET) = .37 HALFSTREET FLOODWIDTH(FEET) = 12.20
IFLOW VELOCITY (FEET/SEC.) = 2.93 DEPTH*VELOCITY = 1.09
.0200
~************************************************************************~*
i~ ,
l' '.
. "
--------------------------------------~--~----------~----------------------------~
I FLOW PROCESS FROM NODE 77.00 TO NODE 75.00 IS CODE = 1
1--------------------------------------------------~----------------------~ »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< .-_ .... -.. -. . ...
==================================================================~=========
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 14.51
RAINFALL INTENSITY (INCH./HOUR) = 3.84
I TOTAL STREAM AREA (ACRES) = 4.40 ,
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 9.42
I CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
---------------------------------------------------------------------~------
I 1
2
3.92
9.42
11.81
14.51
4.389
3.844
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
12.17 12.86
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I RUNOFF(CFS) = 12.86 TIME (MINUTES) = 14.508
TOTAL AREA(ACRES) = 6.00
2 STREAMS
1* * ** * '* * * * * ~ * * * * * * * ok * * * * * * * '* * * * * * * ** * * * * * * * * * * * * * * * * * * *** * * * * *.* ~ * * * ** * * * **~
FLOW PROCESS FROM NODE 75.00 TO NODE 78.00 IS CODE = 4
l-----------------------~--------------------------------------------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««<
============================================================================
I PIPEFLOW VELOCITY(FEET/SEC.) = 7.3
UPSTREAM NODE ELEVATION = 315.00
DOWNSTREAM NODE ELEVATION = 290.00
I FLOWLENGTH(FEET) = 170.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES = 1
PIPEFLOW THRU SUBAREA(CFS) = 12.86
ITRAVEL TIME(MIN.) = .39 TC(MIN.) = 14.90
**************************************************************************** J FLOW PROCESS FROM NODE 75.00 TO NODE 78.00 IS CODE = 1
-----------------------------------------------------------~--------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1I~~;;~;;;~;=;~~;;~=;~;;=;~;=~;;;;;;;;;;=~;;;~==~=;;;7=====================
TIME OF CONCENTRATION (MINUTES) = 14.90
RAINFALL INTENSITY (INCH./HOUR) = 3.78 . I TOTAL STREAM AREA (ACRES) = 6.00
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 12.86
~**************************************************************************
FLOW PROCESS FROM NODE 79.00 TO NODE 78.00 IS CODE = 2
JI~~~~~~!!~~!~:~~!~~~:!~!!!!~:~~~!~~!:!~!~~~!~::~::::::::::::::::::::::::::
lIiOIL CLASSIFICATION IS "D"
~URAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 200.00
UPSTREAM ELEVATION = 300.00
I
DOWNSTREAM ELEVATION = 290.00
ELEVATION DIFFERENCE = 10.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) =
I
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.097
I
SUBAREA RUNOFF(CFS) = 1.11
TOTAL AREA (ACRES) = .60 TOTAL RUNOFF'(CFS) =
,
13.l42
1.11
1** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *.* * * * * * * * * * * '* * * * * * *.* * * * * * * * * * *
FLOW PROCESS FROM NODE 79.00 TO NODE 78.00 IS CODE = 1 .
----------------------------------------------------------------------------
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
============================================================================
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 13.14
RAINFALL INTENSITY (INCH./HOUR) = 4.10
'TOTAL S'.l;'REAM AREA (ACRES) = .60
ITOTAL STREAM RUNOFF(CFS} AT ~ONFLUENCE = 1.11
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
,NUMBER (CFS) (MIN.) (INCH/HOUR)
-----------------------------------------------------------~----------------
I 1
2
12.86
1.11
14.90
13.14
3.778
4.097
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
I
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
13.88 12.96
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I
RUNOFF(CFS} = 13.88 TIME (MINUTES) = 14.898
TOTAL AREA(ACRES} =. 6.60
I, **************************************************.***********************
FLOW PROCESS FROM NODE 78.00 TO NODE 80.00 IS CODE = 1 -.----.. -.,~ .. , .
-------------------------------------------------------------------~--------
I »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
==========================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 14.90
I RAINFALL INTENSITY (INCH./HOUR) = 3.78
TOTAL STREAM AREA (ACRES) = 6.60
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 13.88
I
****************************************************************************
I FLOW PROCESS FROM NODE 81.00 TO NODE 80.00 IS CODE = 2 ---------------------------------..:.----------------.---,-------------..;.,_ .... _----
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<· .
============================================================================
I
SOIL CLASSIFICATION IS liD"
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 500.00 I UPSTREAM ELEVATION = 309.00
I DOWNSTREAM ELEVATION = 276.00
ELEVATION DIFFERENCE = '33.00 I URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 8.293
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
'Ll00 YEAR RAINFALL INTENSITY(INCH/HOUR) = 5.513
UBAREA RUNOFF(CFS) = 6.56
TOTAL AREA(ACRES) = 1.40 TOTAL RUNOFF(CFS) = 6.56
JI****************************************~*********************************
FLOW PROCESS FROM NODE 81.00 TO NODE 80.00 IS CODE = 1 11~~~~~~;~~~~~~;-~~~;;;~~;~~-~~;;~-;~;-~~~;~~;~~;~~~~~---------------------
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
11~~;;~~;;~;=~~~~;;=;;;;=;~;=~;;;;;;;;;~=;~;;~==;=~;7=====================
TIME OF CONCENTRATION(MINUTES) = 8.29 '
RAINFALL INTENSITY (INCH./HOUR) = 5.51 I TOTAL STREAM AREA (ACRES) = 1.40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 6.56
I CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
1--------------------------------------------------~-----------------------1 13.88 14.90 3.778
2 6.56 8.29 5.513 '
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
, VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
18.37 16.07
I COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 18.37 TIME (MINUTES) = 14.898
TOTAL AREA(ACRES) = 8.00 ,
2 STREAMS
.JI*******~******************************************************************
FLOW PROCESS FROM NODE 85.00 TO NODE 86.00 IS CODE = 2
1-----------------------------------------------------------~---~----------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< '
============================================================================
I SOIL CLASSIFICATION IS liD"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 399.00 I DOWNSTREAM ELEVATION = 398.00
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
1 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4'.933
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
JI**************************************************************************
FLOW PROCESS FROM NODE 86.00 TO NODE 87.00 IS CODE = 6 I~~~~~~~~;~~;-~~;;;~;~~;-~~~;~;~~;-;~;~-~~~~;~~~~~~--------------~-~-----"
============================================================~===============
IUPSTREAM ELEVATION = 398.00 DOWNSTREAM ELEVATION = 335.00
________ ........ _____________________________ .... ____ ... _t!J!,'.
r STREET LENGTH(FEET) = 900.00 CURB HEIGTH(INCHES) = 6 •
• ~TREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
IIPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) .= 8.96
STREET FLOWDEPTH{FEET) = .29
HALFSTREET FLOODWIDTH(FEET) = 8.15
AVERAGE FLOW VELOCITY(FEET/SEC.) = I 5.73
PRODUCT OF DEPTH&VELOCITY = 1.66
fTREETFLOW TRAVELTIME(MIN) = 2.62 TC,(MIN) = 12.47
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.237
SOIL CLASSIFICATION IS "D" I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA{ACRES) = 7.20 SUBAREA RUNOFF{CFS) =
SUMMED AREA(ACRES) ~ 7.40 TOTAL RUNOFF(CFS) = 16.78
17.32
l END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .35 HALFSTREET FLOODWIDTH(FEET) = 11.04
FLOW VELOCITY(FEET/SEC.) = 6.48 DEPTH*VELOCITY = 2.25
.0200
JI**************************************************************************
FLOW PROCESS FROM NODE 87.00 TO NODE 88.00 IS CODE = 4
1--------------------------------------------------------------------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««<
1I;~;;;~~;=~;~~~~;;7;;;;i;;~~)=:===;~;===============~======================
UPSTREAM NODE ELEVATION = 335.00
DOWNSTREAM NODE ELEVATION = 267.00
IFLOWLENGTH(FEET) = 280.00 MANNINGS N = .013 ~IVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES = 1
PIPEFLOW THRU SUBAREA (CFS) = 17 . 32 .'
!FRAVEL TIME{MIN.) = .48 TC(MIN.) = 12.95
1*******~******************************************************************
FLOW PROCESS FROM NODE 87.00 TO NODE 88.00 IS CODE = 1
----------------------------------------------------------------------------
~~~;~~;~~~~;~~;;~~;;~~~;=~~;;;;;;;:~!:~~:;=====================
TIME OF CONCENTRATION(MINUTES) = 12.95
.RAINFALL INTENSITY (INCH./HOUR) = 4.14
~OTAL STREAM AREA (ACRES) = 7.40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 17.32
JI************************************************************~*************
FLOW PROCESS FROM NODE 79.00 TO NODE 88.00 IS CODE = 2 11;;;;;~;~;;~~-;;;~;~-~;~;~~~-~~;~~;~-~~~~~~~~~~~~------------------------
==================================================================~=========
I SOIL CLASSIFICATION IS "D"
RURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
NATURAL WATERSHED NOMOGRAPH TIME OF CONCENTRATION "I WITH 10-MINUTES ADDED = 10.00 (MINUTES)
INITIAL SUBAREA FLOW-LENGTH(FEET) = 2.10
UPSTREAM ELEVATION = 340.00
DOWNSTREAM ELEVATION = 265.00 I ELEVATION DIFFERENCE = 75.00
'!!.OJ"
.. wi.......,,'3'1t"rt:::nr='retM"'i"~_ ........ "=""'-.... _____ -___ ·d.,..,... __ '''t'''ft:t) _____________ • ... _tY«_twn""''''~?ND ... ''* ... Wt ...... n't~\i'iifAWiMi'} .... • ..... ·<IIlIl<rjrx_2nllllil'WiilliYm_g._cllOll ___ Illli!_~.,.a
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.885
I
SUBAREA RUNOFF(CFS) = 4.62
. TOTAL AREA(ACRES) = 2.10 TOTAL RUNOFF(CFS) = , 4.62
1**************************************************************************
. FLOW PROCESS FROM NODE 79.00 TO NODE 88.00 IS CODE = 1
----------~-----------------------------------------~--------------------~--
I
»»>DESIGNATE INDEPENDENT STREAM FOR CO~FLUENCE««< .
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
============================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
I
TIME OF CONCENTRATION(MlNUTES) = 10.00
RAINFALL INTENSITY (INCH./HOUR) = 4.89
TOTAL STREAM AREA (ACRES) = 2.10
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
. STREAM RUNOFF TIME INTENSITY
4.62
1NUMBER (CFS) (MIN.) (INCH/HOUR) --------------------------------------------------------------------------
I
1
2
17.32
4.62
12.95
10.00
4.136
4.885
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
I
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
21.23 19.28 '
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 21.23 TIME (MINUTES) = 12.948
ITOTAL AREA(ACRES) = 9.50
1 *******************************************************~******************
FLOW PROCESS FROM NODE 88.00 TO NODE 71.00 IS CODE = 1 '
-----------------------------------------------------~--~-------------------iI~~~~~~~~:~~!:~=:~~~:~~~~~:=::~!~=:~~=~~~:~~~~~~~::::=====================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
" TIME OF CONCENTRATION (MINUTES) = 12 .95
'IRAINFALL INTENSITY (INCH./HOUR) = 4.14
TOTAL STREAM AREA (ACRES) = 9.50
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 21.23
*,**************************************************************************
FLOW PROCESS FROM NODE 70.90 TO NODE 71.00 IS CODE = 2 iI~~~~~~;~~~~~~;;;~~~-~;~;~~~-~~;~;;~-~~~;~~~~~~~~------------------------
============================================================================
I
SOIL CLASSIFICATION IS "D"
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 450.00
1 UPSTREAM ELEVATION = 298.00
DOWNSTREAM ELEVATION = 265.00
ELEVATION DIFFERENCE = 33.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 4.822 'I *CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
TIM~ OF qONCENTRATION ASSUMED AS 5-MINUTES 1 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 7.641
ISUBAREA RUNOFF(CFS) =
".ITOTAL AREA(ACRES) =
5.08
.70 TOTAL RUNOFF(CFS) = 5.08
****************************************************************************
-I:~~~-:~~:~~~-:~~~-~~~~----.~~::~-:~-~~~~----~::~~-:~-:~~~-:--~:------~~----
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
JI»»>AND COMPUTE VARIOUS CONFLUENGED STREAM VALUES««< .
1I========================================~================================= CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MINUTES) = 5.00
I
RAINFALL INTENSITY (INCH./HOUR) = 7.64
TOTAL STREAM AREA (ACRES) = .70
.~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 5.08
ICONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR) . iI---------------------------------------~------~---------------------------1 21.23 12.95. 4.136 .
2 5.08 5~00 7.641 IRAINFAL~-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 23.98 16.57
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 23.98 TIME (MINUTES) = 12.948
·1
TOTAL AREA(ACRES) = '10.20 .
****************************************************************************
I FLOW PROCESS FROM NODE 71.00 TO NODE 68.00 IS CODE = 1
----------------------------------------------------------~---------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1I~;;;~;;;~;=;~~;;;=;;;;=;;;=~;;;;;;;;;;=;;;;~==~=~;7====================~
TIME OF CONCENTRATION(MINUTES) = 12.95 '.
RAINFALL INTENSITY (INCH./HOUR) = 4.14
I
TOTAL STREAM AREA (ACRES) = 10.20
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 23.98
~**************************************************************************
FLOW PROCESS FROM NODE 67.20 TO NODE 6S.00 IS CODE = 7
)[~~~~~~;;;-;;;;~;~;~-~~~;;~~~~-~~;;~;~;~-~;-~;~;~~~~~-----------------~--
--======================================================~=~====~=======~==~=
USER-SPECIFIED VALUES ARE AS FOLLOWS: "I TC (MIN) = 14.59 RAIN INTENSITY (INCH/HOUR) = 3.83
TOTAL AREA(ACRES) = 22.30 TOTAL RUNOFF(CFS) = 39.85
11************************************************************************** FLOW PROCESS FROM NODE 67.20 TO NODE 68.00 IS CODE =. 1 ..
J[~~~~~~~!~~~!!~:~~~~~~~~~~!:~!~~~:~~~:~~~~~~~~~!~~~~~:::::::::::::::::::::
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
ITIME OF CONCENTRATION(MINUTES) = 14.59
I
RAINFALL INTENSITY (INCH./HOUR) = 3.83
I-TOTAL STREAM AREA (ACRES) = 22.30
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 39.85
t **************************************************************************
FLOW PROCESS FROM NODE 80.00 TO NODE 68.00 IS CODE = 7
=I»»>USER SPECIFIED HYDROLOGY INFORMATION AT NODE««< ========================================~=================================
USER~SPECIFIED VALUES ARE AS FOLLOWS: .
I
TC(MIN) = 14.90 RAIN INTENSITY(INCH/HOUR) = 3.78·
TOTAL AREA(ACRES) = 8.00 TOTAL RUNOFF(CFS) = 18.37
1**************************************************************~*********** .
FLOW PROCESS FROM NODE 80.00 TO NODE 68.00 IS CODE = 1
-------------------------------------------------------------------------~--
I
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
=============================================================~==============
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
TIME OF CONCENTRATION(MINUTES) = 14.90
RAINFALL INTENSITY (INCH./HOUR) = 3.78
TOTAL STREAM AREA (ACRES) = 8.00
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
18.37
----------------------------------------------------------------------------
1 23.98 12.95 4.136 I 2 39.85 14.59 3.830
3 18.37 14.90 3.778
IRAINFAL~-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
77.66 80.18 79.59
I
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 80.18 TIME (MINUTES) = 14.590
TOTAL AREA(ACRES) = 40.50
3 STREAMS
JI************************************************************~************* FLOW PROCESS FROM NODE 68.00 TO NODE 82.00 IS CODE = 4
1I~~~~~;~~~~~;-~~~;;~;;-~~;~~;~~~-;~;~-;~;~;~~~~~~-------------~---~--~---
»»>USING USER-SPECIFIED PIPESIZE««<
~~~~~~=~~~~~~~~~~~~~;!~~>:~:~~i~======================================
DOWNSTREAM NODE ELEVATION = 262.00
I
FLOWLENGTH(FEET) = 60.00 MANNINGS N = .013
·GIVEN PIPE DIAMETER (INCH) = 30.00 NUMBER OF PIPES = 1-......... .
PIPEFLOW THRU SUBAREA(CFS) = 80.18
ITRAVEL TIME(MIN.) = .06 TC(MIN.) = 14.65
**************************************************************************** IFLOW PROCESS FROM NODE 68.00 TO NODE 82.00 IS CODE = 1 .
________ • _____ ,_, _______ .~ __ b~ ____________________________ ~ __ ~ ____________ D--________ .. __ .. ~_~
I
-------------------------------------------------------~---------~----------
I=»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< -
==========================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: -
TIME OF CONCENTRATION (MINUTES) = 14.65 I RAINFALL INTENSITY (INCH./HOUR) = 3.82
TOTAL STREAM AREA (ACRES) = 40.50
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 80.18
I ****************************************************************************
~:~~~-:~~~~~~-:~~~-~~~~----~::~~-:~-~~~~----~~:~~-:~-~~~~-:---~------------
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
============================================================~===============
I ·SOIL CLASSIFICATION IS IIDII
RURAL DEVELOPMENT RUNOFF COEFFICIENT = .4500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 1000.00
I UPSTREAM ELEVATION-= 340.00
DOWNSTREAM ELEVATION = 260.00
ELEVATION DIFFERENCE = 80.00
URBAN. SUBAREA OVERLAND TIME OF FLOW(MINUTES) = I *CAUTION: SUBAREA SLOPE EXCEED§ COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
31.121
I NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 2.349
SUBAREA RUNOFF(CFS) = 1.48 I TOTAL AREA(ACRES) = 1.40 TOTAL RUNOFF(CFS) = 1.48
**************************************************************************** l:~~~-:~~~~~~-:~~~-~~~~----~~:~~-:~-~~~~----~~:~~-:~-~~~~-=----~~~-~---------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
.»»>A~D COMPUTE VARIOUS CONFLUENCED STREAM VAtUES««<
If===========================================================~==========~===
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
I TIME OF CONCENTRATION(MINUTES) = 31.12
RAINFALL INTENSITY (INCH./HOUR) = 2.35
TOTAL STREAM AREA (ACRES) = 1.40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 1.48
I CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
1--NUMBER (CFS) (MIN.) (INCH/HOUR) --
--------------------------------------------------------------------------
1 80.~8 14.65 3.819
2 1.48 31.12 2.349
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 81.09 50.80
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 81.09 TIME (MINUTES) = 14.651 I TOTAL AREA(ACRES) = 41.90
**************************************************************************** I FLOW PROCESS FROM NODE 90.00 TO NODE 91.00, I$ CODE = 2
ii ,
"
1.>.~~'''l<'FN 'N~""inTI-,t1, f,' > ;'.~I,,"'~HU~)" ..... r>_'A_' _,' .. ______ G: .. litj!!l .. ~,._I:tV~~, _______ ·".,,· .. r_w·.l .... i *iN .... " ... tai...,.~:-..tiWHF .... 6·tW .......... yjl" .... ' ~"""""'*""'''lWf MIIOI;I.jeIUt"""'~t>II",,...~rlllOinla·"'li"iIiI"""'-·W.!friiOlillgtt~-1iIII_.','"
I ' ----------------------------------------------------------------------------
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< tt;~~~=~~;;~;~~~;~~;=~;=~~~============================~===================
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I, INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
. UPSTREAM ELEVATION = 310.00
, DOWNSTREAM ELEVATION = 309.00
, ELEVATION DIFFERENCE = 1.00 I URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
"-SU13AREA RUNOFF (CFS) = .54
9.853
ITOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54 ,.
1**************************************************************************
FLOW PROCESS FROM NODE 91.00 TO NODE 92.00 IS CODE = 6
-----------------------------------------------------------~----------------
, »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< t======================~===================================================
UPSTREAM ELEVATION = 309.00 DOWNSTREAM ELEVATION = 282.00
STREET LENGTH(FEET) = 800.00 CURB HEIGTH(INCHES) = 6.
I
STREET HALFWIDTH (FEET) = 20.00 STREET CROSSFALL(DEClMAL) == .0200
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
I
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .37
HALFSTREET FLOODWIDTH(FEET) = 12.20
AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = 1.70
4.60
ISTREETFLOW TRAVE~TIME(MIN) = 2.90 TC(MIN) = 12.75
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.177
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
7 .. 38
I
SOIL CLASSIFICATION IS "D"
SUBAREA AREA(ACRES) = 5.90 SUBAREA RUNOFF(CFS) = 13.5~
, SUMMED AREA (ACRES) = 6.10 TOTAL RUNOFF (CFS) = ' 14.10
I END OF SUBAREA STREETFLOW HYDRAULICS:
I
DEPTH (FEET) = .44 HALFSTREET FLOODWIDTH(FEET) = 1:5.66
FLOW VELOCITY(FEET/SEC.) = 5.48 DEPTH*VELOCITY = 2.41
****************************************************************************
IJ:~~~-:~~:~~~-:~~~-~~~~----:~:~~-:~-~~~~----:::~~-:~-:~~~~:---~------------
»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
1t;~;;~;=~;~~~i;;7;~;;7;;~~;~::!:~~~::==--=-==--=======================-=
UPSTREAM NODE ELEVATION = 282.00
I
DOWNSTREAM NODE ELEVATION = 276.00
FLOWLENGTH(FEET) = 220.00 MANNINGS N = , .013
GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES - 1
I
PIPEFLOW THRU SUBAREA(CFS) ~ 14.10
TRAVEL TIME(MIN.) = .46 TC(MIN.) = 13.21
1**************************************************************************
FLOW PROCESS FROM NODE 92.00 TO NODE 93.00 IS CODE = 1 ----------------------------------------------------------------------------
I»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< \
..
________ = __________________________________________________________ ._nN_' _______________ ~.
1 ===~========================================================================
ENFLUENCE VALUES USED FOR INDEPENDENT STREAM
IME OF CONCENTRATION(MlNUTES) = 13.21
INFALL INTENSITY (INCH./HOUR) = 4.08
TOTAL STREAM AREA (ACRES) = 6.10
IFOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1 ARE:
14.10
1****************************************~*********************************
FLOW PROCESS FROM NODE 94.00 TO.NODE 95.00 IS CODE = 2 '
I:~~~~~~~~;~~;~~~~~~~!~~~~~~~!!:~:::::====================~
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I· INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 280.00
DOWNSTREAM ELEVATION = 279.00
1 ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW (MINUTES) =
·100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I SUBAREA.RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
1**************************************************************************
FLOW PROCESS FROM NODE 95.00 TO NODE 96.00 IS CODE = 6'
»»>COMPUTE STREETFLOW'TRAVELTIME THRU SUBAREA««< ~;;~;;;~=;~;;~;~~;=:====;;;~~~===~~;;~;;;~~;~;;~;~~;=:====;;:~~~=========
STREET LENGTH(FEET) = 250.00 CURB HEIGTH(INCHES) = 6.
I STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
I
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .32
HALFSTREET FLOODWIDTH(FEET) = 9.88
AVERAGE FLOW VELOCITY(FEET/SEC.) = 2.29
. PRODUCT OF DEPTH&VELOCITY = .74
ISTREETFLOW TRAVELTIME(MIN) = 1.82 TC(MIN) = 11.67
100 YEAR RAINFALL 'INTENSITY(INCH/HOUR) = 4.422
I SOIL CLASSIFICATION IS liD"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
2.50
SUBAREA AREA(ACRES) = 1.60 SUBAREA RUNOFF(CFS) = 3.89
1 SUMMED AREA (ACRES) = 1. 80 TOTAL RUNOFF (CFS) = 4.4'3
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) =' .37 HALFSTREET FLOODWIDTH(FEET) = 12.20 I FLOW VELOCITY (FEET/SEC.) = 2.76 DEPTH*VELOCITY = 1.02 ___ ."_ .. _.
****************************************************************************
I FLOW PROCESS FROM NODE 96.00 TO NODE 93.00 IS CODE = 1
-----------------------------------------------------~--------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .. ~;~;~;;;~~;~~;~~~~~~~~;;;;~~;;:;;~!:;~~;;:~==================
TIME OF CONCENTRATION(MINUTES) = 11.67 I RAINFALL INTENSITY (INCH./HOUR) = 4.42
_______________ mm _________________________________________________ ~-r------------....... ~~~.
~ .~~
I.
TOTAL STREAM AREA (ACRES) = 1.80
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
I NUMBER (CFS) (MIN.) (INCH/HOUR)
--------------------------------------------------------------;~-----------! 1 14.10 13.21 4.082 ' I 2 4.43 11.67. 4.422
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2· STREAMS
I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
18.19 17.45
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 18.19 TIME (MINUTES) = 13.213
ITOTAL AREA(ACRES) = 7.90
1**************************************************************************
FLOW PROCESS FROM NODE 93.00 TO NODE 97.00 IS CODE = 4.
------------------------------------------------------------------~---------
. »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< .
I »»>USING USER-SPECIFIED PIPESIZE««<
, ==========================================================================
PIPEFLOW VELOCITY(FEET/SEC.) = 5.8
I UPSTREAM NODE ELEVATION = 276.00
DOWNSTREAM NODE ELEVATION = 267.00
FLOWLENGTH(FEET) = 660.00 MANNINGS N = .013
I
··GIVEN PIPE DIAMETER (INCH) = 24.00 NUMBER OF PIPES -
PIPEFLOW THRU SUBAREA(CFS) = 18.19
TRAVEL TIME(MIN.) = 1.90 TC(MIN.) = 15.11
1-....... .
11**************************************************************************
FLOW PROCESS FROM NODE 93.00 TO NODE 97.00 IS CODE·= l
Ir~~~~~~~~~;;~~~-~;~~~~;~~;~-;~;;~-;~;-~~;;~~~;~~~~~~~--------------------~
================================================~========~===~===========~==
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 15.11
RAINFALL INTENSITY (INCH./HOUR) = 3.74
TOTAL STREAM AREA (ACRES) = 7.90
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1 ARE:
18.19
f ********************************************************~**********.*******
FLOW PROCESS FROM NODE 98.00 TO NODE 99.00 IS CODE = 2 .
---------------~----------------------------------------~-------------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< . It;~~~=~~;;i;~~~;~~;=~;=~;~==============================================~=
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 280.00
DOWNSTREAM ELEVATION = 279.00
ELEVATION DIFFERENCE = 1.00
I URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
I TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
...... _~ _~ ____ ._., .• " __ """,,,."''''''_\''~_'''''~'_'t. ___ '' ____ ..... ' ..... ~I -d-. t'¢;"W' .'" .. '" ~¥ -·)·?";'n'-'mf"X?O:j":;1'b'r;$p,?$d£.h!J-"'t-$f"¥'¥t.~
i:
1
1***********************************************************~**************
FLOW PROCESS FROM NODE 99.00 TO NODE 100.00 IS CODE = 6
----------------------------------------------------------~--------~-------~
J»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< ' I, , .~;;;;;~=;~;;~;~~;=:====;;;~~~===~~;;;;;;~=;~;;~;~~;=:===:;;;:~~~========
. ISTREET LENGTH(FEET) = 700.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET 'CROSS FALL (DECIMAL) = .O~OO
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 5.15
STREET FLOWDEPTH(FEET) = .37
HALFSTREET FLOODWIDTH(FEET) = 12.20
AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.21
1 PRODUCT OF DEPTH&VELOCITY = 1.19
STREETFLOW TRAVELTIME(MIN) = 3.64 TC(MIN) = 13.49
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.028
I SOIL CLASSIFICATION IS II D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 4.10 SUBAREA RUNOFF(CFS) =
I
SUMMED AREA(ACRES) = 4.30 TOTAL RUNOFF(CFS) = 9.08
9.63
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .44 HALFSTREET FLOODWIDTH(FEET) = 15.66
IFLOW VELOCITY(FEET/SEC.) =. 3.74 DEPTH*VELOCITY = 1.65
**************************************************************************** I FLOW PROCESS FROM NODE 100.00 TO NODE 97.00 IS CODE = 1. . .
----------------------------------------------------~-~----~------~~------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
1I~~;;~;;;~;=;~~;;;=;;;~=;~;=i;~;;;;;;;;=;;;;~==;=~;;7==~========~=========
TIME OF CONCENTRATION(MINUTES) = 13.49
I
' RAINFALL INTENSITY (INCH./HOUR) = 4.03
TOTAL STREAM AREA (ACRES) = 4.30
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = . 9.63
I********~*****************************************************************" '
FLOW PROCESS FROM NODE 101.00 TO NODE 102.00 IS CODE = 2
1 _-----------------------------------------------------------~-------------»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
~======================================================~============~=======
I
SOIL CLASSIFICATION IS "D"
. SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 300.00
I
' DOWNSTREAM ELEVATION = 299.00
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.85~
SUBAREA RUNOFF(CFS) = .54 1 100 YEAR RAINFALL INTENSITY (INCH/HOUR) = 4.9'33
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .~4 ,
\
Il**************************************************************************
FLOW PROCESS FROM NODE 102.00 TO NODE 103.00 IS CODE = 6
It---------------------------------------------------------------~----~-----
I »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
=i~~i~~~:~~~~~~::--:~~gg====~~~~~~~~~~;::~==;;~~=========
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) = .0200
I SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
. **TRAVELTIME COMPUTED USING ,MEAN FLOW(CFS) = 10.66
STREET FLOWDEPTH(FEET) = .42
I
HALFSTREET FLOODWIDTH(FEET) = 14.51
AVERAGE FLOW VELOCITY(FEET/SEC.) ~ 4.80
PRODUCT OF DEPTH&VELOCITY = 2.00
STREETFLOW TRAVELTIME(MIN) = 4.00 TC(MIN) = 13.85
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.961
SO:;I:L CLASSIFICATION IS "D"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 9.30 SUBAREA RUNOFF(CFS) = 20.26
SUMMED AREA(ACRES) = 9.50 TOTAL RUNOFF(CFS) = 20.80
END OF SUBAREA STREETFLOW HYDRAULICS:
IDEPTH(FEET) = .51 HALFSTREET FLOODWIDTH(FEET) = 19.13
FLOW VELOCITY(FEET/SEC.) = 5.50 DEPTH*VELOCITY = 2.80
JI*******~******************************************************************
FLOW PROCESS FROM NODE 103.00 TO NODE 97.00 IS CODE = 1
1I~~~~~~~~~;;~~~-~;~;~;;~;;~-~~;~~-;;;-;;;;~~~;;~~~~~~---------------------
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
=i~~~~g~;g~~~~~=:~~~~~:~~~~;;~~~:;;;;-;;==;-=~~======--=============
RAINFALL INTENSITY (INCH./HOUR) = 3.96
I
TOTAL STREAM AREA (ACRES) = 9.50
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 20.80
I
CONFLUENCE INFORMATION:
STREAM . RUNOFF TIME INTENSITY
NUMBER . (CFS) (MIN.) (INCH/HOUR)
--------------------------------------------------------------------------~-I 1 18.19 15.11 3.744
2 9.63 13.49 4.028
3 20.80 13.85 3.961
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 46.80 46.98 47.46
~OMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) =-47.46 TIME (MINUTES) = 13.848
I
TOTAL AREA(ACRES) = 21.70
****************************************************************************
~:~~~-:~~:~~~-:~~~-~~~~---:~~:~~-:~-~~~~---~~~:~~-:~-:~~~-:---~----------~-
»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
=i~:~~~~~~~~~~:~:;~:::::;:=:::::::::::=:~:::======================
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
I UPSTREAM ELEVATION = 309.00
.. .n ..
I DOWNSTREAM ELEVATION = 308.00
I ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF (CFS) = .54 " I TOTAL AREA(ACRES) = .20 TOTAL RUNO~F(CFS) =
9.853
.54
r' ***************************************~**********************************
FLOW PROCESS FROM NODE 106.00 TO NODE 107.00 IS CODE = 6
-------------------------------------------------~--------~-------~--------~ »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< ' ~;;;;;;~=;~;~~;~~;=:====;~;~~~===;~;;;;;;~=;~;~~;~~;~:====;~~~~~=========
STREET LENGTH(FEET) = 350.00 CURB HEIGTH(INCHES) = 6.
I STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
I
,SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .29
HALFSTREET FLOODWIDTH(FEET) = 8.15
AVERAGE FLOW VELOCITY(FEET/SEC.) -, 2.91
,PRODUCT OF DEPTH&VELOCITY = .84 I STREETFLOW TRAVELTIME(MIN) = 2.00 TC(MIN) = 11.86
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.378 ,
I -SOIL CLASSIFICATION IS "0"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
4.56
SUBAREA AREA(ACRES) = 3.30 SUBAREA RUNOFF(CFS) = 7.95
I SUMMED AREA(ACRES) = '3.50 TOTAL RUNOFF(CFS) = 8.49
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .34 HALFSTREET FLOODWIDTH(FEET) = 10.46
FLOW VELOCITY(FEET/SEC.) = 3.50 DEPTH*VELOCITY = 1.17 I '
****************************************************************************
I FLOW PROCESS FROM NODE 107.00 TO NODE 108.00 IS CODE = 4
--------------------------------------------------~--------------------~----»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
1r;~;;~~;~~~~~~;;7;;;;;;;~~~:!!!~;:::===================================
UPSTREAM NODE ELEVATION = 300.00
I DOWNSTREAM NODE ELEVATION = 269.00
FLOWLENGTH(FEET) = 500.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES = 1
I PIPEFLOW THRU SUBAREA(CFS) = 8.49
TRAVEL TIME(MIN.) = 1.73 TC(MIN.) = 13.59
1***************************************************************************
FLOW PROCESS FROM NODE 109.00 TO NODE 110.00 IS CODE = 2
. , '. --------------------------------------------------------------~--~------~-----
I »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< '
=========================================================~=================
SOIL CLASSIFICATION IS "0"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 317.00
DOWNSTREAM ELEVATION = 316.00
I ELEVATION DIFFERENCE = 1.00
I URBAN SUBAREA OVERLAND TIME OF FLOW (MINUTES) =.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933 I SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) -
9.85.3
.54
J**************************************************************************
FLOW PROCESS FROM NODE 110.00 TO NODE 111.00 IS CODE = 6
I[~~~~~~~~~~~~:~~~~~~!~~~:~!!~~~~!~~:~~~~:~~~~!~:~~~::::::::::::::::::::::
UPSTREAM ELEVATION = 316.00 DOWNSTREAM ELEVATION = 292.00
I STREET LENGTH(FEET) = 580.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) =
I
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .37
HALFSTREET FLOODWIDTH(FEET) = 12.20
AVERAGE FLOW VELOCITY(FEET/SEC.) = 5.18 I PRODUCT OF DEPTH&VELOCITY = 1.92
STREETFLOW TRAVELTIME(MIN) = 1.87 TC(MIN) = 11.72
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.411
SOIL CLASSIFICATION IS "D" .
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
8.32
I SUBAREA AREA(ACRES) = 6.40 SUBAREA RUNOFF(CFS) = 15.53
SUMMED AREA(ACRES) = 6.60 TOTAL RUNOFF(CFS) = 16.07
END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .45 HALFSTREET FLOODWIDTH(FEET) = 16.24 I FLOW VELO~ITY (FEET/ SEC.) = 5. 83 DEPTH*VELOCITY =.. 2 .• 63
.0200
r
**************************************************************************
FLOW PROCESS FROM NODE 111.00 TO NODE 112.00 IS CODE = 4 ----------------------------------------------------------------------------
»»>CO~PUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< l »»>USING USER-SPECIFIED PIPESIZE««< '
=================================================================~========
PIPEFLOW VELOCITY(FEET/SEC.) = 9.1
I UPSTREAM NODE ELEVATION = 292.00
DOWNSTREAM NODE ELEVATION = 265.00
FLOWLENGTH(FEET) = 170.00 MANNINGS N = .013
I GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA (CFS) = 16.07
TRAVEL TIME(MIN.) = .31 TC(MIN.) = 12.03
1
Il************~*************************************************************
FLOW PROCESS FROM NODE 111.00 TO NODE 112.00 IS CODE = 1
~----------------------------------------------------------~---------------• »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
======================================================~=====================
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 12.03 .
RAINFALL INTENSITY (INCH./HOUR) = 4.34
TOTAL STREAM AREA (ACRES) = 6.60 I TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 16.07
r**************************************************************************
"l>'I'I" f, tt"rn"lll"'b~lel':"M"'''''''' f :!tIl.",,'tJ,.,~'VI_"III_r~ ____ _ ____ ........... "" ... _ .... """"" ............. _* _______ .... ' ....,he>\_MW~·lrt .......... "!";t""ij['¢f~!r%t1M"W%rW' uta ,·7;''1.the·,!~
IFLOW PROCESS FROM NODE 112.50 TO NODE 112.00 IS CODE = 2
~IE~~~~~~!~~!~:~~~~~~:!~!~!!~:~~~!~~!:~!~!~!~:::::::::::::::::::::::::::::
SOIL CLASSIFICATION IS "0"
J' OMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 1000.00
UPSTREAM ELEVATION'= 315.00
I DOWNSTREAM ELEVATION = 265.00
ELEVATION DIFFERENCE = 50.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
I *CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
" ,
11.682
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
i '100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.420
UBAREA RUNOFF(CFS) = 5.26
TOTAL AREA(ACRES) = 1.40 TOTAL RUNOFF(CFS) = 5.26
JI**************************************************************************
FLOW PRQCESS FROM NODE 112.50 TO NODE 108.00 IS CODE = 1 1----------------------------------------------------------------------~---»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< ,
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
11~~~;~~~~~~=~~~~~;=~;~;=;~;=~~;~;~~;~~;=;;;~~==;=~~~=============~=======
TIME OF CONCENTRATION(MINUTES) = 11.68 ' .
RAINFALL INTENSITY (INCH./HOUR) = 4.42
ITOTAL STREAM AREA (ACRES) = 1.40
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 5.26
I
CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
1I--~----~--~~~~;-----~;~~;-------~~;;;--------------------------~----------
2 5.26 11.68 4.420
I
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
21.23 21.03
I
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 21.23 TIME (MINUTES) = 12.029
TOTAL AREA(ACRES) = 8.00
2 STREAMS
JI**************************************************************************
FLOW PROCESS FROM NODE 112.00 TO NODE 108.00 IS CODE = 1 1_-------------------------------------------------------------------------»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
======================================~=====================================
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 12.03
RAINFALL INTENSITY (INCH./HOUR) = 4.34
TOTAL STREAM AREA (ACRES) = 8.00
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1 ARE:
21.23
~************************************************~*********************~*~*
"
".'
1 FLOW PROCESS FROM NODE 107.00 TO. NODE 108.00 IS CODE = 7
I[~~~~~~~~~:~~~~~~~~~:~!~~~~~~!:~~~~~~!~~:!~:~~~!~~~~~::::::::::::::::::::
USER-SPECIFIED VALUES ARE AS FOLLo.WS:
I' TC(MIN) = 13.59 RAIN INTENSITY(INCH/HOUR) = 4.01
To.TAL AREA(ACRES) = 3.50 To.TAL RUNo.FF(CFS) = 8.49
1**************************************************************************
FLo.W PRo.CESS FRo.M No.DE 107.00 TO. No.DE 108.00 IS Co.DE= \ 1
------------------------------------------------------------------~---------I .' »»>DESIGNATE INDEPENDENT STREAM Fo.R Co.NFLUENCE««<
»»>AND Co.MPUTE VARIOUS Co.NFLUENCED STREAM VALUES««<
, . --, ==========================================================~================~
1 CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
'TIME o.F Co.NCENTRATION(MINUTES) = 13.59 .
RAINFALL INTENSITY (INCH./Ho.UR) = 4.01
. To.TAL STREAM AREA (ACRES) = 3.50 1 TOTAL STREAM RUNo.FF(CFS) AT Co.NFLUENCE =
Co.NFLUENCE INFo.RMATIo.N:
I -STREAM RUNo.FF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/Ho.UR)
2 ARE,:
8.49
-------------------------------------------------------------~-------------~
I 1
2
21. 23
8.49
12.03
13.59
4.337
4.009
I RAINFALL-INTENSITY-RA~Io. Co.NFLUENCE FORMULA USED FOR
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS Fo.LLo.WS:
29.08 28.12
COMPUTED Co.NFLUENCE ESTIMATES ARE AS FOLLo.WS:
I RUNo.FF(CFS) = 29.08 TIME (MINUTES) = 12.029
TOTAL AREA(ACRES) = 11.50
2 STREAMS
~**************************************************************************.
FLo.W PRo.CESS FRo.M No.DE 108.00 TO. No.DE 113.00 IS Co.DE = 4
-------------------------------------------------------------~--------------1»»>Co.MPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««<
===================================================~=============~===~~==~==
I PIPEFLo.W VELo.CITY(FEET/SEC.) = 9.3
UPSTREAM No.DE ELEVATIo.N = 269.00
DOWNSTREAM NODE ELEVATION = 266.00
FLo.WLENGTH'(FEET) = . 100.00 MANNINGS N = .013 I GIVEN PIPE DIAMETER (INCH) = 24.00 NUMBER OF PIPES 1
PIPEFLOW THRU SUBAREA(CFS) = 29.08
TRAVEL TIME{MIN.) = .18 TC(MIN.) = 12.21 I '
**************************************************************************** ·IFLo.W PRo.CESS FRo.M NODE 108.00 TO No.DE 113.00 IS Co.DE = 1· '
----------------------------------------------~---------~----~-~--------~-»»>DESIGNATE INDEPENDENT STREAM Fo.R Co.NFLUENCE««<
-,-=======================================================~==================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 12.21
RAINFALL INTENSITY (INCH./HOUR) = 4.30 I TOTAL STREAM AREA (ACRES) = 11.50
1 TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 29.08
1* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * ** * ** ** * ** * * * * * * ** * *~:* ~~.~*.* ** * * * *** *'
FLOW PROCESS FROM NODE 114.00 TO NODE 115.00 IS CODE = 2
Ir~~~~~~~~;;~~-~;~~;~-~;~~~~~-;~;~;;~-~~~;;~;~~~~~------~---~~--------~---
============================================================================
SOIL CLASSIFICATION IS "D" I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = • 5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 277.00
1 DOWNSTREAM ELEVATION = 276.00
. ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = ~.853
I
• 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
~*********************************~***************************************~ .
FLOW PROCESS FROM NODE 115.00 TO NODE 116.00 IS CODE = 6
Ir ~-------------------------------------------------------------------~-----»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< . . ,
======~=====~===============================================================
UPSTREAM ELEVATION = 276.00 DOWNSTREAM ELEVATION ;::
ISTREET LENGTH(FEET) = 200.00 CURB HEIGTH(INCHES) = 6.
270.00
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 1 **TRAVELTIME COMPUTED USING MEAN FLOW(CFS)
STREET FLOWDEPTH(FEET) = .24
HALFSTREET FLOODWIDTH(FEET) = 5.84
1 ~VERAGE FLOW VELOCITY (FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = .75
~.09
2.83
STREETFLOW TRAVELTIME(MIN) = 1.08 TC(MIN) = 10.93
1 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.613
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
1 SUBAREA AREA (ACRES) = 1. 80 SUBAREA RUNOFF (CFS) =
SUMMED AREA(ACRES) = 2.00 TOTAL RUNOFF(CFS) =
4.57
5.11
END OF SUBAREA STREETFLOW HYDRAULICS:
1 DEPTH (FEET) = .29 HALFSTREET FLOODWIDTH(FEET) =
FLOW VELOCITY(FEET/SEC.) = '3.27 DEPTH*VELOCITY;::
8.15
.94
•. 0200
t **************************************************************************
FLOW PROCESS FROM NODE 116.00 TO NODE 113.00 IS qOOE = 4
-----------------------------------------------------.--------------~-------'-
I
»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««< .
=======================================~===================================="
1 PIPEFLOW VELOCITY (FEET/SEC.) = 2.9
UPSTREAM NODE ELEVATION = 270.00
DOWNSTREAM NODE ELEVATION = 266.00
.. FLOWLENGTH(FEET) = 260.00 MANNINGS N = .013
I
GIVEN PIPE DIAMETER(INCH) = 18.00 NUMBER OF PIPES =
. PIPEFLOW THRU SUBAREA (CFS) = 5. 11
TRAVEL TIME(MIN.) = 1.50 TC(MIN.) = 12.43
1-
1
I
****************************************************************************
JI:~~~-~~~~~~~-:~~~-~~~~---::~:~~-:~-~~~~---::::~~-:~-~~~~-:---:~----------~
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< -
I »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
====================================================~==~~=================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MlNUTES) = 12.43
I
RAINFALL INTENSITY (INCH./HOUR) = 4.25'
. TOTAL STREAM AREA (ACRES) = 2.00
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 5.11
ICONFLUEN~E INFORMATION:
STREAM RUNOFF TIME INTENSITY
-INUMBER (CFS) (MIN.) (INCH/HOUR) --------------------------------------------------------------------------
1 29.0B 12.21 4.296
2 5.11 12.43 4.246
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I 34.13 33.B5 .
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 34.13 TIME (MINUTES) = 12.209
ITOTAL AREA(ACRES) = 13.50
**************************************************************~************* -IFLOW PROCESS FROM NODE 113.00 TO NODE 123.00 IS CODE = 4
-------------------------------------~------------------------------------»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
=I;»»USING USER-SPECIFIED PIPESIZE««<
====================================~=========================~==========
IPEFLOW VELOCITY(FEET/SEC.) = 10.9
UPSTREAM NODE ELEVATION = 266.00
.DOWNSTREAM NODE ELEVATION = 256.00 ~LOWLENGTH(FEET) = 340.00 MANNINGS N = .013
'GIVEN PIPE DIAMETER (INCH) = 24.00 NUMBER OF PlEES =
~IPEFLOW THRU SUBAREA(CFS) = 34.13
~RAVEL TIME(MIN.) = .52 TC(MIN.) = 12.73
1
*1;*************************************************************************
LOW PROCESS FROM NODE 11B.00 TO NODE 119.00 IS CODE = 2. .
~»»RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< .
JIb=========================================================================
SOIL CLASSIFICATION IS "D" rOBILE HOME DEVELOPMENT RUNOFF COEFFICIENT = .6500
INITIAL SUBAREA FLOW-LENGTH(FEET) = BOO.OO
UPSTREAM ELEVATION = 315.00
DOWNSTREAM ELEVATION = 262.00 I ELEVATION DIFFERENCE = 53.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) = 19.293
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
I DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
*CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.19B
;.
I SUBAREA RUNOFF(CFS) = 18.50 I TOTAL AREA(ACRES) = 8.90 TOTAL RUNOFF(CFS) = 18.50
**************************************************************************** I FLOW PROCESS FROM NODE 119.00 TO NODE 120.00 IS CODE = 1
------------------------------------------~---------------------------~---»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< \
1r~~;;~;;;~;=~~~;;~=;~;~=;~;=~;~;;;;~;;;=~;;;~==~=~;7=====================
TIME OF CONCENTRATION(MINUTES) = 19.29 ' .
RAINFALL INTENSITY (INCH./HOUR) = 3.20 I TOTAL STREAM AREA (ACRES) = 8.90
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 18.50
J **.* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** *** * * ** * * * * * * * * * * * * * * * * * ** * * * ***
FLOW PROCESS FROM NODE 121.00 TO NODE 122.00 IS CODE = 2
I[-:~~~~~~~~~~~:~!~~~~:~~!~!~~:~~~~!~:~~~~~~!~~~~~:::::::~:~:===:=::::::::
SOIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 305.00
I DOWNSTREAM ELEVATION = 304.00
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = .4.933
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
~***~**********************************~***********************************
FLOW PROCESS FROM NODE 122.00 TO NODE 120.00 IS CODE = 6
r------~-------------------------------------------------------------------»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
============================================================================
UPSTREAM ELEVATION = 304.00 DOWNSTREAM ELEVATION = I STREET LENGTH(FEET) = 930.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) -
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
256.00
I **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .31
HALFSTREET FLOODWIDTH(FEET) = 9.30
4.71 I AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = 1.47
STREETFLOW TRAVELTIME(MIN) = 3.29 TC(MIN) = 13.15
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.096
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I SUBAREA AREA(ACRES) = 3.60 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 3.80 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
4.63
8.11
8.65
DEPTH (FEET) = .37 HALFSTREET FLOODWIDTH(FEET) = 12.20 I FLOW VELOCITY(FEET/SEC.) = 5.39 DEPTH*VELOCITY = 2.00
.0200
r '* * * * * * * * * * * * * * * * * * * * * * * * * * * ~ * * * * * * * * * * * * * * * * * * * *,* * * * * * * * * * ** * * * * * * * * * * * * * *'.
-------------------------------------------------------~----~.~ rndWPP'T' or trmtn..........,."".... ... ~·~IiIIUlI.BIWA ....... Ut ••
I~FLOW PROCESS FROM NODE 122.00 TO NODE 120.00 IS CODE 1
--------------------------------------------------------------------------~-
I
»»>DESIGNATE INDE~ENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
=========================================================================~==
I
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 13.15
RAINFALL INTENSITY (INCH./HOUR) = 4.10
2 ARE:
TOTAL STREAM AREA (ACRES) = 3.80
I TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE' 8.65
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
I 1
2
18.50
8.65
19.29
13.15
3.198
4.096
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS -I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
25.26 23.10 .
COMPUTEP CONFLUENCE ESTIMATES ARE AS FOLLOWS:
1 RUNOFF (CFS) = 25.26 TIME (MINUTES) = 19.293
TOTAL AREA(ACRES) = 12.70
~********~*****************************************~***********************
FLOW PROCESS FROM NODE 120.00 TO NODE 123.00 IS CODE = 1 .
------------------------~-----------------------------------------~---------1»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
========================================================~=====~===========
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
1 TIME OF CONCENTRATION(MINUTES) = 19.29
RAINFALL INTENSITY (INCH./HOUR) = 3.20
TOTAL STREAM AREA (ACRES) = 12.70
I TOTAL ~TREAM RUNOFF(CFS) AT CONFLUENCE = 25.26
**************************************************************************** l FLOW PROCESS FROM NODE 122.40 TO NODE 122.60 IS CODE = 2
-----------------------------------------------~--------------~-------~---»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
Ir;~~~=~~;;~;~~~;~~;=~;=~~~================================================
INDUSTRIAL DEVELOPMENT RUNOFF COEFFICIENT = .9500 -
I INITIAL SUBAREA FLOW-LENGTH(FEET) = 700.00
UPSTREAM ELEVATION = 286.00
DOWNSTREAM £LEVATION = 256.00
ELEVATION DIFFERENCE = 30.00
I URBAN SUBAREA OVERLAND TIME OF FLOW (MINUTES) = 5. 90.5
*CAUTION: SUBAREA SLOPE EXCEEDS COUNTY NOMOGRAPH
DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
I *CAUTION: SUBAREA FLOWLENGTH EXCEEDS COUNTY
NOMOGRAPH DEFINITION. EXTRAPOLATION OF NOMOGRAPH USED.
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.864
I SUBAREA RUNOFF (CFS) = 7 • 82
TOTAL AREA(ACRES) = 1.20 TOTAL RUNOFF(CFS) = 7.82
Ir**************************************************************************
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
I TIME OF CONCENTRATION(MlNUTES) = 5.90
RAINFALL INTENSITY (INCH./HOUR) = 6.86
TOTAL STREAM AREA (ACRES) = 1.20
ITOTAL STREAM RUNOFF(CFS) AT CONFLUENCE ~ , 7.82
**************************************************************************** J FLOW PROCESS FROM NODE 113.00 TO NODE 123.00 IS CODE = 7-"
----------------------------------------------~----------------~----------»»>USER SPECIFIED HYDROLOGY INFORMATION AT NODE««<
1==========================================================================
USER-SPECIFIED VALUES ARE AS FOLLOWS:
TC(MIN) = 12.73 RAIN INTENSITY(INCH/HOUR) = 4.18
ITOTAL AREA(ACRES) = 13.50 TOTAL RUNOFF(CFS) = 34.13
**************************************************************************** I FLOW PROCESS FROM NODE 113.00 TO NODE 123.00 IS CODE = 1 --------------------------------------------------------------------------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
I »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< \
====================================================~=======~=============
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
I
-TIME OF CONCENTRATION (MINUTES) = 12.73'
RAINFALL INTENSITY (INCH./HOUR) = 4.18
TOTAL STREAM AREA (ACRES) = 13.50
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 34.13
1 CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
t NUMBER (CFS) (MIN.) (INCH/HOUR) ,
-------~------------------------------------------------------------------__ 1 25.26 19.29 3.198 ____ '-_, __ , _,"
2 7.82 5.90 6.864 1 3 34.13 12.73 4.182
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS
I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
55.00 40.39 58.21
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I
RUNOFF(CFS) = 58.21 TIME (MINUTES) = 12.730
TOTAL AREA(ACRES) = 27.40
1**************************************************************************
FLOW PROCESS FROM NODE 125.00 TO NODE 126.00 IS CODE = 2
-------------~--------------------------------------------------------------
,»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
===========================================================~========~=====
SOIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 325.00
DOWNSTREAM ELEVATION = 324.00 I ELEVATION DIFFERENCE = 1.00
1
URBAN SUBAREA OVERLAND TIME OF FLOW (MINUTES) = 9.8-53
1 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
'SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
IL**************************************************************************
FLOW PROCESS FROM NODE 126.00 TO NODE 127.00 IS CODE = 6 r---------------------------------------------------------------~-----------, ,
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««< ,
========================================================~========~==========
UPSTREAM ELEVATION = 324.00 DOWNSTREAM ELEVATION = 305.00 I STREET LENGTH(FEET) = 750.00 CURB HEIGTH(INCHE$) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
__ SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1 . ___ -' __ .. _,
I **TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 10.16
STREET FLOWDEPTH(FEET) = .42
HALFSTREET FLOODWIDTH(FEET) = 14.51
I AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.57
PRODUCT OF DEPTH&VELOCITY = 1.90
-STREETFLOW TRAVELTIME(MIN) = 2.73 TC(MIN) = 12.59
I ' 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.212
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I 'SUBAREA AREA(ACRES) = 8.30 SUBAREA RUNOFF(CFS) = 19.,23
-SUMMED AREA(ACRES) = 8.50 TOTAL RUNOFF(CFS) = 19.77
END, OF SUBAREA STREETFLOW HYDRAULICS:
I DEPTH (FEET) = .51 HALFSTREET FLOODWIDTH(FEET) = 19.13
FLOW VELOCITY(FEET/SEC.) = 5.23 DEPTH*VELOCITY = 2.66
r**************************************************************************
FLOW PROCESS FROM NODE 127.00 TO NODE 128.00 IS CODE = 4
-------------------------------------------------~------------~----------~-~
I »»>CqMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««< , ,
======~=====~===============================================================
I PIPEFLOW VELOCITY(FEET/SEC.) = 11.2
UPSTREAM NODE ELEVATION = 305.00
DOWNSTREAM NODE ELEVATION = 298.00
FLOWLENGTH{FEET) = 450.00 MANNINGS N = .013
I GIVEN PIPE DIAMETER (INCH) = 18.00 NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA(CFS) = 19.77
TRAVEL TIME(MIN.) = .67 TC(MIN.) = 13.26
1
,***************************************************************************
FLOW PROCESS FROM NODE 127.00 TO NODE 128.00 IS CODE = 1 I-~~~~~~;~~;;~~;-~;~;;;;~;;~-~~~;~-;~~-~~;;~~~;~;~~~~~-----,..----~----------
======================~=============~=?=============================~=====~=
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENTRATION(MINUTES) = 13.26
RAINFALL INTENSITY (INCH./HOUR) = 4.07
I TOTAL STREAM AREA (ACRES) = 8.50
TOTAL STREAM RUNOFF(CFS) AT'CONFLUENCE = 19.77
It**************************************************************************
...... ~~~~' __ ~ ________ "''''1f1''''"6iS? ..... _. _______ .......... __ .w ..... liH'I!:'''''';IW_nd""'!' "1_I*""'t"t!"""* .... Jh~i"1_"nt .... '"' .... eQ ..... W'_e!! .... 11'W' tn_os_'r_n .. IiIM' ___ tw.::..t'A
1 FLOW PROCESS FROM NODE 129.00 TO NODE 130.00 IS CODE = 2
--------------------------------------------------------------------~---~---J »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
===========================================================~=====~=~======,
SOIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH (FEET) = 100.' 00
UPSTREAM ELEVATION = 321.00
DOWNSTREAM ELEVATION = 320.00 1 ELEVATION DIFFERENCE = 1.00
. URBAN SUBAREA OVERLAND TIME OF FLOW(MlNUTES) = 9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I SUBAREA RUNOFF(CFS) = .54
TOTAL AREA (ACRES) = .20 TOTAL RUNOFF(CFS) = .54
II**********************************~***************************************
FLOW PROCESS FROM NODE 130.00 TO NODE 128.00 IS CODE = 6· ,
-------~----~---------------------------------------------------------------I »»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
--==========================================================================
UPSTRE~ ELEVATION = 320.00 DOWNSTREAM ELEVATION =' 298.00
I STREET LENGTH(FEET) = 1000.00 CURB HEIGTH(INCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
I,
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
**TRAVELTIME COMPUTED USING MEAN FLOW"(CFS) =
STREET FLOWDEPTH(FEET) = .30
HALFSTREET FLOODWIDTH(FEET) = 8.73
AVERAGE FLOW VELOCITY(FEET/SEC.) = 3.27 1 PRODUCT OF DEPTH&VELOCITY = .98
STREETFLOW TRAVELTIME(MIN) = 5.10 TC(MIN) = 14.95
1 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.770
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
5.75
1 SUBAREA AREA (ACRES) = 5 • 00 SUBAREA RUNOFF (CFS) = 10. 37
SUMMED AREA(ACRES) = 5.20, TOTAL RUNOFF(CFS) = 10.91
. END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .36 HALFSTREET FLOODWIDTH(FEET) = 11.62
IFLOW VELOCITY(FEET/SEC.) = 3.72 DEPTH*VELOCITY = 1.33
.0200
1* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * * ** * * * * * ** * *** *** * * ** ** **,* *** ** **** * **'*
FLOW PROCESS FROM NODE 130.00 TO NODE 128. 00 IS CODE = '1
----------------------------------------------------------------~-~---------
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . I »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< .
=============~======================================~==~=====~============
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 AE,E:
I· TIME OF CONCENTRATION(MINUTES) = 14.95
RAINFALL INTENSITY (INCH./HOUR) = 3.77
TOTAL STREAM AREA (ACRES) = 5.20 I TOTAL STREAM RUNOFF (CFS) AT CONFLUENCE = 10.91
,..cONFLUENCE INFORMATION: . __ .. ,." .. ,
STREAM RUNOFF TIME INTENSITY . .
I NUMBER (CFS) (MIN.) (INCH/HOUR)
---------------------------------------------------------~--------------~-
1 19.77 13.26 4.074 I 2 10.91 14.95 3.770
I
RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 2 STREAMS
I VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS: .
29.87 29.21 .
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I
RUNOFF (CFS) = 29.87 TIME (MINUTES) = 13.257
TOTAL AREA(ACRES) = 13.70
11**************************************************************************
FLOW PROCESS FROM NODE 128.00 TO NODE 129.20 IS CODE = 4 ----------------------------------------------------------------------------I »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
»»>USING USER-SPECIFIED PIPESIZE««<
==========================================================~=================
I PI PEFLOW VELOCITY (FEET/SEC. ). = 9 • 5
UPSTREAM NODE ELEVATION = 298.00
DOWNSTREAM NODE ELEVATION = 277.00
I
FLOWLENGTH (FEET) = 160.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 24.00 NUMBER OF PIPES = 1
: PIPEFLOW THRU SUBAREA(CFS) = 29.87
TRAVEL TIME(MIN.) = .28 TC(MIN.) = 13.54 I .
****************************************************************************
IIFLOW PROCESS FROM NODE 128.00 TO NODE 129.20 IS CODE = 1
~~~~~~~~~~~~~~-~~~~;~~~~~~-~~~~~-;~~-~~;;~~~;~;~~~~~----------~----~-----
===================================================================~========
·ICONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
. TIME OF CONCENTRATION(MINUTES) = 13.54
RAINFALL INTENSITY (INCH./HOUR) = 4.02
I TOTAL STREAM AREA (ACRES) = 13.70
.~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 29.87
11**************************************************************************
FLOW PROCESS FROM NODE 130.00 TO NODE 131.00 IS CODE = 2 ----------------------------------------------------------------------------I »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««<
===================================================~======================
SOIL CLASSIFICATION IS liD"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 295.00
DOWNSTREAM ELEVATION = 294.00
I ~~:i~T~g~~iiF~~~~~; TIME ~FO~LOW(MlNUTES) -9.853
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I
SUBAREA RUNOFF (CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
11**************************************************************************
FLOW PROCESS FROM NODE 131.00 TO NODE 132.00 IS CODE = 6
----------------------------------------------------------~-----------------I»»>'COMPU~E STREETFLOW TRAVELTIME THRU SUBAREA««< . .
================================================================~=========
. UPSTREAM ELEVATION = 294.00 DOWNSTREAM ELEVATION = 277.00
ISTREET LENGTH(FEET) = 750.00 CURB HEIGTH(INCHES) = 6.
11
__________________ .. _. ________________________________ ~ ____________ ~--------~------~w.
I
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) = .0200
I SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2 '.
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 3.90
STREET FLOWDEPTH(FEET) = .28
HALFSTREET FLOODWIDTH(FEET) = 7.57 I AVERAGE FLOW VELOCITY(FEET/SEC.) = 2.82
PRODUCT OF DEPTH&VELOCITY = .78
STREETFLOW TRAVELTIME(MIN) = 4.43 TC(MIN) = 14.28
I 100 YEAR RAINFALL INTENSITY (INCH/HOUR) '= 3.882
SOIL CLASSIFICATION IS "D"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
SUBAREA AREA(ACRES) = 3.10 SUBAREA RUNOFF(CFS) = 6.62 .,
SUMMED AREA (ACRES).= 3 • 30 TOTAL RUNOFF (CFS) = 7 ;Y6' ,,,,,.,.
END OF SUBAREA STREETFLOW HYDRAULICS:
I DEPTH(FEET) = .32 HALFSTREET FLOODWIDTH(FEET) = 9.88
FLOW VELOCITY(FEET/SEC.) = 3.27 DEPTH*VELOCITY = 1.06
~************************************************************************** FLOW PROCESS FROM NODE 132.00 TO NODE 129.20 IS CODE = 1 .
-~-------~---------------------------------------~--------------------------I »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
============================================================================
I CONFLUENCE VALUES USED FOR INDEPENDENT STREAM
TIME OF CONCENTRATION(MINUTES) = 14.28
RAINFALL INTENSITY (INCH./HOUR) = 3.88
TOTAL STREAM AREA (ACRES) = 3.30 I TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
CONFLUENCE INFORMATION:
I STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
I 1
2
;29.87
7.16
13.54
14.28
4.019
3.882
2 ARE:
7.16
I RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FO~. 2
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
36.79 36.01
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
I RUNOFF (CFS) = 36.79 TIME (MINUTES) = 13.537
TOTAL AREA(ACRES) = 17.00
STREAMS
~**************************************************************************
FLOW PROCESS FROM NODE 129.20 TO NODE 133.00 IS CODE = 4
I--~~~~~;~;~~~;-~~~;;~~;-~~;;~~~;;-~~;~-;~~~;~~~~~~----------~----------~--
»»>USING USER-SPECIFIED PIPESIZE««<
=======================================~==================~=================
I PIPEFLOW VELOCITY(FEET/SEC.) = 11.7
UPSTREAM NODE ELEVATION = 277.00
DOWNSTREAM NODE ELEVATION =. 256.00
I FLOWLENGTH(FEET) = 500.00 MANNINGS N = .013
GIVEN PIPE DIAMETER (INCH) = 24.00 NUMBER OF PIPES =
PIPEFLOW THRU SUBAREA(CFS) = 36.79
I
TRAVEL TIME(MIN.) = .71 TC(MIN.) = 14.25
1
I
***********************************************************************.***** ~:~~~-:~~~~~~-:~~~-~~~~---~~::~~-:~-~~~~---~:::~~-:~-:~~~-:---:----~----~-~
»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< .
1r~;;;~;~;~~=;~~;~;=;;~;=;;;=~;;~;~;;~;;=;;;;~==~=~;7=====================
TIME OF CONCENTRATION(MINUTES) = 14.25
RAINFALL INTENSITY (INCH./HOUR) = 3.89 I TOTAL STREAM AREA (ACRES) = 17.00 '
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = '36.79
~~*********************************.****************************~***********
FLOW PROCESS FROM NODE 134.00 TO NODE 135.00 IS CODE = 2
[----~-----~-----------------------------~-------------------------~--~----»»>RATIONAL METHOP INITIAL SUBAREA ANALYSIS««<
--==========================================================================
SOIL CLASSIFICATION IS "0"
I SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 295.00
I DOWNSTREAM ELEVATION = 294.00
. ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
SUBAREA RUNOFF(CFS) = .. 54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) = .54
~**************************************************************************
FLOW PROCESS FROM NODE 135.00 TO NODE 136.00 IS CODE = 6
(-------------------------------------------------------------------,..-----.-
»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
, . -. -======================================================~=================~===
UPSTREAM ELEVATION = 294.00 DOWNSTREAM ELEVATION =
I
STREET 'LENGTH (FEET) = 250. 00 CURB HEIGTH (INCaES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DEClMAL) =
SPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 2
278.00
I
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) =
STREET FLOWDEPTH(FEET) = .24
4.00
HALFSTREET FLOODWIDTH(FEET) = 5.84
PRODUCT OF DEPTH&VELOCITY = 1.06 I AVERAGE FLOW VELOCITY(FEET/SEC.) = 4.36
STREETFLOW TRAVELTIME(MIN) = .95 TC(MIN) = 10.81
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.647
SOIL CLASSIFI-CATION IS "0"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
I
SUBAREA AREA(ACRES) = 2.70 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 2.90 TOTAL RUNOFF(CFS) = 6.90
7.44
._END OF SUBAREA STREETFLOW HYDRAULICS:
DEPTH (FEET) = .29 HALFSTREET FLOODWIDTH(FEET) =
I FLOW VELOCITY(FEET/SEC.) = 4.76 DEPTH*VELOCITY = 8.15
1.38
.0200
1**************************************************************************
FLOW PROCESS FROM NODE 136.00 TO NODE 133.00 IS CODE = 4
----------------------------------------------------------------~----~------
I»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
.,...1 "-+0"#9 ......... W --, #
I»»>USING USER-SPECIFIED PIPESIZE««<
============================================================================
I
PIPEFLOW VELOCITY(FEET/SEC.) = 4.2
UPSTREAM NODE ELEVATION = 278.00
DOWNSTREAM NODE ELEVATION =
I
FLOWLENGTH(FEET) = 250.00
GIVEN PIPE DIAMETER (INCH) =
PIPEFLOW THRU SUBAREA(CFS) = 1 TRAVEL TIME (MIN.) = .99
256.00
MANNINGS N = .013
18.00 NUMBER OF PIPES =
7.44
TC(MIN.) = 11.80 ,
1
****************************************************************************
(FLOW PROCESS FROM NODE 136.00 TO NODE 133.00 IS CODE = 1·
-----------------------------------------------------~------------------~--»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
I »»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««< , ~
==========================================================================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE: \
TIME OF CONCENTRATION(MINUTES) = 11.80 , 1 RAINFALL INTENSITY (INCH./HOUR) = 4.39
TOTAL STREAM AREA (ACRES) = 2.90
TOTAL S~REAM RUNOFF(CFS) AT CONFLUENCE = 7.44
1 CONFLUENCE INFORMATION:
STREAM RUNOFF TIME INTENSITY
I-~~~~~~----~~:~~-----~~:~':~-~:~~~~~~~~~-----------~------------~-------------
1 36.79 14.25 3.888
2 7.44 11.'80 4.392
I-RAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR' 2 STREAMS--
VARIOUS CONFLUENCED RUNOFF VALUES ARE·AS FOLLOWS:
1-43.38 40.01
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
RUNOFF (CFS) = 43.38 TIME (MINUTES) = 14.249 1 TOTAL ~REA(ACRES) = 19.90
**************************************************************************** I-FLOW PROCESS FROM NODE 133.00 TO NODE 137.00 IS CODE = 4
--------------------------------------------~----~-------------------~----»»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««<
I=»»>USING USER-SPECIFIED PIPESIZE««< -
==========================================================================
PIPEFLOW VELOCITY(FEET/SEC.) = 8.8
UPSTREAM NODE ELEVATION = 256.00 1 DOWNSTREAM NODE ELEVATION = 245.00
FLOW LENGTH (FE-ET) = 250.00 MANNINGS N = .013
GIVEN PIPE DIAMETER(INCH) = 30.00 NUMBER OF PIPES = 1
1 PIPEFLOW THRU SUBAREA(CFS) = 43.38
TRAVEL TIME(MIN.) = .47 TC(MIN.) = 14.72
I*****~*****~***************************************************************
FLOW PROCESS FROM NODE 133.00 TO NODE 137.00 IS CODE = 1
-----------------------------------------------------------------------------l »»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««<
==================================================~=======================
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE: 1 TIME OF CONCENTRATION(MINUTES) = 14.72
I
RAINFALL INTENSITY (INCH./HOUR) = 3.81
I
' TOTAL STREAM AREA (ACRES) = 19.90
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE =
1**************************************************************************
FLOW PROCESS FROM NODE 138.00 TO NODE 139.00 IS CODE = 2
-----------------------------------------------------------------~----------..... -~ ....... ~.. .
=I »»>RATIONAL METHOD INITIAL SUBAREA AN~LYSIS««< ' , " .
===============================================================~=====~====
. SOIL CLASSIFICATION IS "D"
I
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 318.00
DOWNSTREAM ELEVATION = 317.00
I
ELEVATION DIFFERENCE = 1.00
URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) =
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
I
SUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) =
9.853
.54
1**************************************************************************
< FLOW PROCESS FROM NODE 139.00 TO NODE 140.00 IS CODE = 6
~--------------------------------------~------------------------~-----------
=I»»>COMPUTE STREETFLOW TRAVELTIME THRU SUBAREA««<
==============================================~===========~========~====~=
UPSTREAM ELEVATION = 316.00 DOWNSTREAM ELEVATION = 245.00
STREET LENGTH(FEET) = ' 950.00 CURB HEIGTH(INCHES) = 6.
ISTREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL) = .0200
SPECIrIED ijUMBER OF HALFSTREETS CARRYING RUNOFF = 1
I
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 7.73
STREET FLOWDEPTH(FEET) = .34
HALFSTREET FLOODWIDTH(FEET) = 10.46
AVERAGE FLOW VELOCITY(FEET/SEC.) = 6.38
1< PRODUCT OF DEPTH&VELOCITY = 2.14
STREETFtOW TRAVELTIME(MIN) = 2.48 TC(MIN) = 12.34
100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4'.268
I
SOIL CLASSIFICATION IS "D"
SINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
-SUBAREA AREA (ACRES)' = 6.10 SUBAREA RUNOFF(CFS) =
I
SUMMED AREA(ACRES) = 6.30 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULJ:~CS:
14.32'
14.8(5
DEPTH (FEET) = .40 HALFSTREET FLOODWIDTH(FEET) = 13.93
I FLOW VELOCITY (FEET/SEC.) = 7.22 DEPTH*VELOCITY = 2.92
**************************************************************************** . I FLOW PROCESS FROM NODE 139'.00 TO NODE 140.00 IS CODE = 1
---------------------------------------------------------~----------------»»>DESIGNATE INDEP~NDENT STREAM FOR CONFLUENCE««< .
1t~~~;~;;~~;=;~~;;;=;;;;=;~;=~~;;;;~;;~~=;~;;~==;=~;7====~================'
TIME OF CONCENTRATION(MINUTES) = 12.34
I
RAINFALL INTENSITY (INCH./HOUR) = 4.27
TOTAL STREAM AREA (ACRES) = 6.30
TOTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 14.86
I
*,* * * *'* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ** * ** **** * * * * **** ** * ** * * ** * ***
FLOW PROCESS FROM NODE 142.00 TO NODE 143.00 IS CODE = 2 ~-~---------------------------------------------------------------~--------I»»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< .
=~====================================================================~=====
FOIL CLASSIFICATION IS "D"
ISINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
INITIAL SUBAREA FLOW-LENGTH(FEET) = 100.00
UPSTREAM ELEVATION = 279.00
I DOWNSTREAM ELEVATION = 278.00
ELEVATION DIFFERENCE = 1.00
. URBAN SUBAREA OVERLAND TIME OF FLOW(MINUTES) = 9.853
1'100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.933
IsUBAREA RUNOFF(CFS) = .54
TOTAL AREA(ACRES) = .20 TOTAL RUNOFF(CFS) ~ .54 I .' .
********************************************************~*******************
FLOW PROCESS FROM NODE 143.00 TO NODE 144.00 IS CODE = 6 -I~~~~~~;;;~~;-;~;;;~;~;;-~~;;~~~;;-~~;~-;~;~~~~~~~----------------------
============================================================================
IPPSTREAM ELEVATION = 278.00 DOWNSTREAM ELEVATION = 245.00
ISTREET LENGTH(FEET) = 600.00 CURB HEIGTH(~NCHES) = 6.
STREET HALFWIDTH(FEET) = 20.00 STREET CROSSFALL(DECIMAL). = rPECIFIED NUMBER OF HALFSTREETS CARRYING RUNOFF = 1
**TRAVELTIME COMPUTED USING MEAN FLOW(CFS) = 2.67
STREET FLOWDEPTH(FEET) = .-27
HALFSTREET FLOODWIDTH(FEET) = 6.99
AVERAGE FLOW VELOCITY(FEET/SEC.) =
PRODUCT OF DEPTH&VELOCITY = 1.17 I 4.40
STREETFLOW TRAVELTIME(MIN) = 2.27 TC(MIN) = 12.12
I 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 4.316
SOIL CLASSIFICATION IS "D"
.eINGLE FAMILY DEVELOPMENT RUNOFF COEFFICIENT = .5500
IbUBAREA'AREA(ACRES) = 1.80 SUBAREA RUNOFF(CFS) =
SUMMED AREA(ACRES) = 2.00 TOTAL RUNOFF(CFS) =
END OF SUBAREA STREETFLOW HYDRAULICS:
. 4.27
4.82
IDEPTH(FEET) = .31 HALFSTREET FLOODWIDTH(FEET) = 9.30
IFLOW VELOCITY(FEET/SEC.) = 4.89 DEPTH*VELOCITY = 1.53
.0200
*1**************************************************************************
FLOW PROCESS FROM NODE 144.00 TO NODE 137.00 IS CODE = 1 ----------------------------------------------------------------------------·I»»>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««< . ---... -.,_. -' ..
»»>AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES««<
=============================================================~==============
ICONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
ITIME OF CONCENTRATION(MINUTES) = 12.12
RAINFALL INTENSITY (INCH./HOUR) = 4.32
~OTAL STREAM AREA (ACRES) = 2.00
I~OTAL STREAM RUNOFF(CFS) AT CONFLUENCE = 4.82
CONFLUENCE INFORMATION:
I
STREAM RUNOFF TIME INTENSITY
NUMBER (CFS) (MIN.) (INCH/HOUR)
----------------------------------------------------~-------------------~---I 1 43.38 14.72 3.808
.,'
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1 2 14.86 12.34 4~268
3 4.82 12.12 4.316
IRAINFALL-INTENSITY-RATIO CONFLUENCE FORMULA USED FOR 3 STREAMS
VARIOUS CONFLUENCED RUNOFF VALUES ARE AS FOLLOWS:
I " 60.88 58.32 57.78
COMPUTED CONFLUENCE ESTIMAT~S ARE AS FOLLOWS:
RUNOFF (CFS) = 60.88 TIME (MINUTES) = 14.721
Ir;~;~~;~;~~~~;;;;;;=~~;;~;===========================================
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STORM DRAIN ANALYSIS
PURPOSE
The storm Drain Analysis program calculates the hyd,raulic
grade line elevations of a proposed or existing storm drain system
given the physical characteristics and the discharge (Q).
currently capability allows for either prespure flow or
partial flow with cross sections being either circular or
rectangular box. A rectangular open channel can be analyzed as a
box cross section, providing'the results, show that it is flowing
partially full throughout the entire system, so that the soffit
does not affect the computations.
GENERAL DESCRIPTION
The program starts the computation for the hydraulic grade
line by evaluating the friction losses and the minor l.osses
throughout the system. The junction losses are evaluated by
equating pressure plus momentum for the incoming out outgoing flows
through the junction. This is accomplished by applying the formula
developed by the city of Los Angeles, which establishes tb,at the
summation of pressures, ignoring fric~ion, is equ~l ~o the average
cross section flow area, multiplied by the change in the hydraulic
gradient through the junction (see references). The basic flow
elevations used for the main lines'at either end of the junction
that apply to the pressure plus,momentum equation depend on the
type of flow at each end of the junction. These elevations are
determined by computing the drawdown curves for each line. The
control elevation for the lateral or lateral system is taken as the
average of the hydraulic grade line elevations at both ends of the
junction. If the water elevation in the lateral is above thi$
control, the momentum contributed by the lateral in the analysis
of the junction is decreased in proportion to the tario of the area
in the lateral below the control to the total area of flow.
The point with greater force will be the control point and the.
point at the other end of the junction is determined by satisfying
the pressure plus momentum equation.
Any 0rf these point may be overridden by the backwater curve
originating at the main control at the downstream end of the
system. If this is the case, then the pressure plus momentum
equation is applied to the point or points determined by the
backwater curve during the upstream analysis.
The above-mentioned considerations apply to both partial and
pressure flow.
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_ ,-net"1 ........ ¥tHNeM/(!A~Al!II __ ~ _________________________ • .... -.... m_=Sffft/l: .. • .. I1111 ... _ .... ________ "'1
When the flow changes from partial to full or from fuli to
partial, the program determines and prints the location where this
change occurs. If the flow reaches normal depth within a line, the
program determines and prints this location. When the flow Qhanges'
from supercritical to subcritical because of downstream conditions,
it happens through a hydraulic jump, the program determines the
precise location of the jump by equating the pressure plus momentum
for the two kinds of flow. It prints the jump location pressure
plus' momentum at the jump and the depth of water before and after
the jump.
A PROBLEM SET-UP
A typical procedure which will aliow the engineer to obtain
a complete analysis of a storm drain system and also acquire all
data necessary to analyze the design is as follows:
1. Establish the main line of the entire storm drain system.
2.
3.
4.
5.
Generally speaking, the lines carrying the greater Q will
form the main line. In case of comparable Q's, the line
contributing the greater force will be the main line.
Establish the main line of any lateral system by
proceeding upstream from the junction with the\ main line
to the highest upstream inlet.
Number the segments of the main line of the entire storm
drain system consecutiveiy in the upstream direction to
the highest upstream inlet. The channel or conduit,
existing or proposed, at the downstream end, which the
system joins, should have the lowest number in the system
(normally line number 1). .
Number each lateral system in the same manner, proceeding
from its junction with the main line to its highest
upstream inlet. --.... " ..
For each line, tabulate all pertinent analysis parameters
such as:
Maximum design flow Q.
Adjusted flow Q, to be used in junction analysis.
Conduit size and length.
Flow line elevations.
Minor loss coefficients for the inlets.
Entrance 16ss coetficients for the inlets.
Confluence angles at all junctions.
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...... ~ .... __ • ..", ... ~_ ....u..u.. ... ...,..)(.._ .....
JUNCTION LOSS COEFFICIENT, KJ
The junction loss is computed as Kj times the velocity head·
in the outlet conduit.
Note, however, that if the value of Kj is left blank qr there
is partial flow condition, the pressure plus momentum equ~tion will
be used to determine the junction losses. .
ENTRANCE LOSS COEFFICIENT, KE
For use with structure types 1, 2 or 3. Values for ke are
0.10. The entrance loss is computed as Ke times the velocity head
in the outlet conduit.
MINOR LOSS COEFFICIENT, KM
Km is the summation of the loss coefficients for bends,
manholes, etc. The total minor loss is computed as KID times the
velocity head in the conduit.
Typical values for Km are:
Manholes: Km = 0.05
Bends: Km = 0.002 x Delta
Delta = central angle of curve in degrees.
Minor losses are added to the friction losses in the hydraulic
analysis for f~ll flow only
STREET GUTTER FLOW CALCULATIONS
The street gutter flow calculations are based on Mannings
equation for open channel flow. The design parameters, such, road
cross sectional geometry, and roughness coefficients are listed
above the hydraulic table.
Some important values are:
Cross section slopes = 2.00%
Street roughness coefficient = 0.018
Parkway roughness coefficient -0.03
ttreet width -20'
From: Q = 1.49ar 2/3S1/2
n
Q = 1.49ar2/3
S 1/2 n
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»tu· .. "" .... ? W«ern
Q
Given ----the engineer will look down the discharge column Sl/2'
for the nearest value and then left to the depth column for the
water surface elevation in the channel.
This table also shows where depth of flow will exceed the
street crown, and top of curb.
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7/12/89
t I
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HT. o·f Ct~own ..... 'bove nU·~·bE~t· F.L := .1("17i~
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DESIGNE~ a. ~CMILLDN
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1 - --_",. ~-_"'E"3-rR_-"~"'-'''' DATE 22-AUG-39 ~
P,\G:: 1
~ LINE Q Ll " " D~l DC FLJ',; SF-FuLL v 1 V 2 FL 1 FL 2 HG 1 H~ 2 0 1 0 2 TWTW
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1,1 1 tiYLlRAULIC GRADE u:n: CG~lTR:JL = 245.05 ~!
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X = 0.00 XCh) = 15.03
3.61 DC5J) = 0.53 DCAJ) = 2.15
0.00294 9.g 5.0 311.62 320.30 312.16 321.22 0.54 0.92 321.65 ,0.00
1'21 ~91
2 HYJR4ULIC GRADE LINE CJ~TRJL = 245.90 I 30' 2'1 ~~. 124 9 I.:;, Ie 0 U.4v ?~.-\ T 0 • ..,;)02" , <..5~~4j.5~ 2:45.~0 246.06 1.05 o. 56 246.1-'6 z£! u.40 •• L v.vv ~~/ 125: X = O.OJ X(N) = "73.75
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4' 2 HYDRAULIC G'RADE LINE CONTROL = 245.90 ; 60
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