HomeMy WebLinkAboutSUP 2022-0001; OMNI LA COSTA GOLF COURSE; HYDRAULIC ANALYSIS; 2022-03-21
HYDRAULIC ANALYSES
FOR
OMNI LA COSTA RESORT & SPA
CHAMPIONS COURSE RENOVATION
March 21, 2022
Wayne W. Chang, MS, PE 46548, Exp. 6/30/2023
Civil Engineering ◦ Hydrology ◦ Hydraulics ◦ Sedimentation P.O. Box 9496 Rancho Santa Fe, CA 92067 (858) 692-0760
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TABLE OF CONTENTS
Introduction ........................................................................................................................................1
Hydraulic Analysis.............................................................................................................................2
Conclusion .........................................................................................................................................3
APPENDIX
A. Hydraulic Results
MAP POCKET
City of Carlsbad Drawing No. 233-6
HEC-RAS Work Map
1
INTRODUCTION
The Omni La Costa Resort & Spa is located at 2100 Costa Del Mar Road in the city of Carlsbad (see the Vicinity Map). The resort currently includes a driving range and two 18-hole golf
courses: the Champions Course and the Legends Course. The driving range is located southwest of the two golf courses, south of the resort buildings, and north of San Marcos Creek. The Champions Course is aligned in a north-south direction between Poinsettia Lane on the north and
San Marcos Creek on the south. A tributary to San Marcos Creek (identified as Unnamed Tributary 1 by FEMA) flows in a southerly direction through the Champions Course. San Marcos Creek flows in an east to west direction through the Legends Course, along the south edge of the driving range, then under El Camino Real, and ultimately into Batiquitos Lagoon.
Vicinity Map
CITY OF OCEANSIDE
PACIFIC
OCEAN
CITY OF
ENCINITAS
CITY OF
VISTA
CITY OF
SAN
MARCOS
2
The project grading is being designed by O’Day Consultants and proposes remodeling of the
driving range and Champions Course. The proposed project will include both cut and fill activities. Graded materials are expected to be balanced on-site. The current submittal is in support of a Special Use Permit.
Under both existing and proposed conditions, storm runoff from the driving range flows to San Marcos Creek, while storm runoff from the Champions Course flows to Unnamed Tributary 1 and then San Marcos Creek. FEMA has mapped a Zone A floodplain along Unnamed Tributary
1 and San Marcos Creek on Flood Insurance Map Numbers 06073C1032H and 06073C1034H
dated December 20, 2019. A Zone A floodplain is approximate and not based on detailed engineering analyses. As a result, this report contains detailed existing and proposed condition 100-year hydraulic analyses of Unnamed Tributary 1 and San Marcos Creek through the project
site. HYDRAULIC ANALYSIS
Existing and proposed condition hydraulic analyses were performed using the US Army Corps of Engineers’ HEC-RAS model (latest version 5.0.7). One set of analyses were performed for San Marcos Creek and a second set of analyses were performed for Unnamed Tributary 1. The
following describes the HEC-RAS input parameters and results. The HEC-RAS cross-sections are delineated on the HEC-RAS Work Map in the map pocket.
The cross-sections along San Marcos Creek start at 100 and along Unnamed Tributary 1 start at 200. The existing cross-sections were primarily created from November 3, 2021 1-foot contour interval topographic mapping prepared for the project. This was supplemented with SANGIS’ 2-foot contour interval topographic mapping for portions of cross-sections 247 and 248. In
addition, cross-section 120 is based on the SANGIS mapping. The project mapping is on NGVD 29, while the SANGIS mapping is on NAVD 88. According to O’Day Consultants, NAVD 88 = NGVD 29 + 2.16 feet. The HEC-RAS analyses are on NGVD 29, so the SANGIS elevations were reduced by 2.16 feet. The proposed condition cross-sections are at the same locations as the
existing condition cross-sections, but were revised where needed to reflect O’Day Consultants’ grading.
FEMA’s effective 100-year flow rate of 15,700 cubic feet per second (cfs) was used for San
Marcos Creek. This flow rate was discussed with Mr. Scott Lyle from City staff and is being used for the City’s El Camino Real pedestrian bridges project. An effective flow rate is not available for Unnamed Tributary 1. The City provided an August 7, 2002 letter report by Rick
Engineering Company (excerpts attached in Appendix A), which used a 100-year flow rate of 1,900 cfs. Therefore, 1,900 cfs was modeled for Unnamed Tributary 1. Average roughness coefficients were assigned to the main channel and overbank areas. The golf
course areas were assigned a roughness of 0.030. The remaining natural areas were assigned a roughness varying from 0.030 to 0.060 depending on vegetation density. Paved areas were assigned a roughness of 0.020 to 0.030. The higher range was used when landscaping or other obstructions existing within the paved areas.
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The downstream starting water surface elevation in San Marcos Creek was set equal to the 100-year elevation from the El Camino Real pedestrian bridges project at cross-section 9741. City staff provided hydraulic data for their project, which showed an elevation of 10.49 feet NAVD 88 or 8.33 feet NGVD 29. Although this elevation was entered, HEC-RAS increased the
elevation to 13.17 feet NGVD 29. The existing and proposed condition downstream starting water surface elevations in Unnamed Tributary 1 were assigned values based on the receiving 100-year water surface elevations in San Marcos Creek, i.e., 17.88 and 17.90 feet, respectively,
at cross-section 111.
Expansions were assigned at some cross-sections using a 1.3:1 expansion ratio based on Table 6-1 from the HEC-RAS User’s Manual (included in Appendix A).
There are multiple culverts under Alga Road along Unnamed Tributary 1. Drawing No. 233-6 shows that there are three 84-inch RCPs and one 14-foot, 3-inch by 9-foot, 7-inch structural plate arch used as a golf cart crossing. The culverts were modeled at cross-section 266.5 based on the
drawing. The existing and proposed condition 100-year results are included in Appendix A and summarized in Table 1. O’Day Consultants plotted the existing and proposed condition
floodplains, which are included on the HEC-RAS Work Map.
CONCLUSION
Existing and proposed condition 100-year HEC-RAS hydraulic analyses has been performed for San Marcos Creek and Unnamed Tributary 1 to San Marcos Creek along the Omni La Costa
Resort & Spa Champions Course Renovation Project. The results show relatively minor differences in the water surface elevations at most cross-sections. The larger increases occur along the golf course and do not impact existing structures.
4
San Marcos Creek Unnamed Tributary to San Marcos Creek
Cross-Section Existing Condition Proposed Condition Prop.–Exist. Condition Cross-Section Existing Condition Proposed Condition Prop.–Exist. Condition 120 21.32 21.32 0.00 248 100.84 100.84 0.00 119 20.62 20.62 0.00 247 99.03 99.03 0.00 118 19.52 19.52 0.00 246 96.43 96.43 0.00 117 18.42 18.44 0.02 245 94.66 94.63 -0.03 116 18.40 18.42 0.02 244 92.15 92.15 0.00 115 18.32 18.34 0.02 243 90.47 90.47 0.00 114 18.26 18.27 0.01 242 89.39 89.18 -0.21
113 18.15 18.17 0.02 241 87.54 88.07 0.53
112 18.12 18.14 0.02 240 86.48 87.28 0.80
111 18.05 18.08 0.03 239 86.08 86.61 0.53
110 18.04 18.07 0.03 238 85.90 86.25 0.35
109 17.98 18.00 0.02 237 84.48 84.68 0.20
108 17.93 17.95 0.02 236 77.74 77.74 0.00
107 17.75 17.76 0.01 235 74.85 73.87 -0.98
106 17.70 17.75 0.05 234 72.93 72.50 -0.43
105 17.59 17.60 0.01 233 70.74 70.75 0.01
104 17.53 17.53 0.00 232 69.11 68.93 -0.18 103 17.40 17.34 -0.06 231 66.97 67.34 0.37 102 17.20 17.20 0.00 230 65.12 65.14 0.02 101 16.79 16.79 0.00 229 63.27 63.29 0.02 100 13.17 13.17 0.00 228 62.62 62.62 0.00 227 62.26 62.26 0.00 226.5 Alga Road 0.00 226 58.85 58.85 0.00 225 56.84 56.84 0.00 224 53.08 53.19 0.11 223 48.50 48.54 0.04 222 46.62 46.61 -0.01 221 44.54 44.53 -0.01 220 43.36 43.34 -0.02 219 39.69 39.69 0.00 218 38.66 39.42 0.76 217 38.22 38.84 0.62 216 37.33 36.92 -0.41 215 35.67 36.28 0.61 214 33.42 33.40 -0.02 213 31.25 31.16 -0.09 212 29.49 29.49 0.00 211 27.15 27.22 0.07 210 25.83 25.55 -0.28 209 25.18 25.29 0.11 208 23.92 23.92 0.00 207 22.14 22.22 0.08 206 20.07 20.24 0.17 205 19.46 19.43 -0.03 204 18.48 18.45 -0.03 203 18.17 18.20 0.03 202 18.19 18.22 0.03 201 18.10 18.15 0.05 200 18.05 18.08 0.03 Table 1. Summary of 100-Year HEC-RAS Results
APPENDIX A
HYDRAULIC DATA AND RESULTS
VOLUME 2 OF 12
REVISED:
DECEMBER 20, 2019
FLOOD INSURANCE STUDY NUMBER
06073CV002E
Version Number 2.3.3.3
SAN DIEGO
COUNTY,
CALIFORNIA
AND INCORPORATED AREAS
COMMUNITY NAME NUMBER COMMUNITY NAME NUMBER
CARLSBAD, CITY OF 060285 NATIONAL CITY, CITY OF 060293
CHULA VISTA, CITY OF 065021 OCEANSIDE, CITY OF 060294
CORONADO, CITY OF 060287 POWAY, CITY OF 060702
DEL MAR, CITY OF 060288 SAN DIEGO, CITY OF 060295
EL CAJON, CITY OF 060289 SAN DIEGO COUNTY,
UNINCORPORATED AREAS 060284
ENCINITAS, CITY OF 060726 SAN MARCOS, CITY OF 060296
ESCONDIDO, CITY OF 060290 SANTEE, CITY OF 060703
IMPERIAL BEACH, CITY OF 060291 SOLANA BEACH, CITY OF 060725
LA MESA, CITY OF 060292 VISTA, CITY OF 060297
LEMON GROVE, CITY OF 060723
FLOOD INSURANCE STUDY
FEDERAL EMERGENCY MANAGEME T AGENCY
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98
Table 10: Summary of Discharges, continued
Peak Discharge (cfs)
Flooding Source Location
Drainage
Area
(Square
Miles)
10% Annual
Chance
4% Annual
Chance
2% Annual
Chance
1% Annual
Chance
0.2% Annual
Chance
San Luis Rey
River Downstream of Palma 167.3 4,0005 * 18,000 30,000 78,000
San Luis Rey
River
Downstream of
Confluence with Puma
Creek
126.7 4,0005 * 16,800 28,000 72,800
San Luis Rey
River
Upstream of Confluence
with Puma Creek 71.5 5,000 * 15,000 24,500 64,000
San Marcos
Creek
Upstream of the San
Marcos Dam (Lake San
Marcos)
28.1 * * * 15,700 *
San Marcos
Creek
Upstream of Discovery
Street * 7,400 * 13,300 14,700 19,350
San Marcos
Creek
Upstream of Confluence
with Las Posas Creek * 6,450 * 11,650 13,150 16,950
San Marcos
Creek Upstream of Highway 78 * 6,200 * 11,000 12,450 16,000
San Marcos
Creek
Upstream of Confluence
with Twin Oaks Valley
Creek
* 2,600 * 4,550 5,150 6,600
San Marcos
Creek
Approximately 1,000
Feet Upstream of
Confluence with Twin
Oaks Valley Creek
* 2,200 * 3,900 4,400 5,600
San Vicente
Creek At Mouth 83.0 1,400 * 10,500 16,000 34,000
San Marcos Upstream of tlie San
Marcos Dam (Lake San 28.1 * '* * 15,700 * Creek Mar~
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RICK
ENGINEERING
v COMPANY San Diego • Riverside • Orange • Phoenix • Tucson
August 7, 2002
Mr. Howard H. Chang, Ph.D, P.E.
P.O. Box 9492
Rancho Santa Fe, California 92067
Water Resources Division
SUBJECT: PRELIMINARY HEC-2 HYDRAULIC ANALYSES OF SAN MARCOS
CREEK AND THE NORTH TRIBUTARY STREAM FOR PROPOSED
GRADING WITHIN THE LA COSTA GOLF COURSE IN THE
CITY OF CARLSBAD, CALIFORNIA
(RICK ENGINEERING COMP ANY JOB NUMBER 13952)
Mr. Howard H. Chang:
The La Costa Golf Course and Resort is an existing development that is located east of El
Camino Real Road and south of Costa Del Mar Road in the City of Carlsbad, California. See the
Vicinity Map attached. San Marcos Creek flows through the eastern portion of the golf course
toward the El Camino Real Bridge and ultimately to Batiquitos Lagoon. There is also a tributary
stream that flows through the northern portion of the golf course and confluences with San
Marcos Creek just upstream of the El Camino Real Bridge. Herein referred to as the "north
tributary". There is grading proposed by the La Costa Resort in the northern and eastern portions
of the golf course as well as the employee parking lot near El Camino Real. We have prepared
existing condition and post-project condition hydraulic analyses of San Marcos Creek and the
north tributary to determine impacts to the 100-year floodplain resulting from the proposed
grading. This is a request for your review of the hydraulic analyses.
The U.S. Army corps of Engineers HEC-2 Water Surface Profiles program was used to
determine the water surface elev~tions (WSELs) in San Marcos Creek and the north tributary.
The existing condition HEC-2 cross-sectional geometry data was obtained from a digital terrain
model compiled by photogrammetric methods using aerial photography dated August 3, 2001.
The post-project condition cross-sectional geometry data was based on the proposed grading
shown on the "La Costa Resort HEC-2 Workmap for San Marcos Creek and North Tributary,"
Sheets 1-5 of 5, dated August 7, 2002 located in Map Pockets 1 and 2.
The horizontal variation of Manning's n-values along San Marcos Creek and the north tributary
were based on a field visit on July 19, 2002. The tennis courts and the driving range at the
southwest portion of the project are surrounded by woven fences made of cloth material. Since
5620FriarsRoad • SanDiego • California • 92110-2596 • (619)291-0707 • FAX: (619)291-4165 • www.rickengineering.com
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Mr. Howard H. Chang
Page2
August 7, 2002
these areas are within the floodplain, the Manning's n-value was adjusted to account for the
obstructed flow through the fences. The calculations for the adjusted Manning's n-value are
included with this letter as Attachment 1.
The effective Federal Emergency Management Agency (FEMA) 100-year flow in San Marcos
Creek is 14,700 cubic feet per second ( cfs ). The 100-year flow of 1,900 cfs in the north tributary
stream was obtained from a study prepared by Rick Engineering Company entitled, "Hydrologic
and Hydraulic Study for Rancho Carrillo Local Facilities Management Plan Zone 18" dated
January 12, 1995 (Job Number 12119-C).
The starting WSEL in San Marcos Creek at El Camino Real was determined from a study
prepared by Rick Engineering Company entitled, "HEC-2 Hydraulic Analysis for La Costa
Employee Parking Lot" dated September 25, 1991 (Job Number 11347).
The existing condition HEC-2 results show that the house at the north end of cross-section 280 is
inundated by approximately 0.4 ft during the 100-year storm event. The existing condition
HEC-2 output and cross-sectional plots are included with this letter as Attachment 2
(FN: LCGCEX.HC2).
The post-project condition HEC-2 results show that WSELs for San Marcos Creek and the north
tributary increase by a maximum of 0.02 feet within the golf course and 0.05 feet at the El
Camino Real Bridge over the existing WSELs. Therefore, the impacts of the proposed grading
are not a significant impact to the floodplain for the creeks. The post-project condition HEC-2
output and cross-sectional plots are included as Attachment 3 (FN: LCGCP.HC2).
Please review the attached HEC-2 hydraulic analyses and HEC-2 workmaps and respond with
your comments. If you have any questions, please call Roberta Cronquist at (619) 688-1454.
Sincerely,
I RICKENGINEEK1r~tt:1Mt'
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Dennis C. Bowling,,~~ .. ---_-_:-_:-~-
R.C.E. #32838, Exp. 06/06
Prinicpal
DCB:KW:nd.001
Attachments
Chapter 6 Entering and Editing Geometric Data
4
3
2
1
A B C D
Lc
L e
Expansion Reach
Contraction Reach
ER
CR
1
1
Typical flow transition pattern
Idealized flow transitionpattern for 1-dimensionalmodeling
Figure 6-11 Cross Section Locations at a Bridge or Culvert
The average obstruction length is half of the total reduction in
floodplain width caused by the two bridge approach embankments. In
Table 6-1, b/B is the ratio of the bridge opening width to the total
floodplain width, nob is the average Manning n value for the
overbanks, nc is the n value for the main channel, and S is the
average longitudinal bed slope through the bridge reach. The values
in the interior of the table are the ranges of the expansion ratio. For
each range, the higher value is typically associated with a higher
discharge.
6-27
--o
- - - - - - - - - -""'-:~-- - - - - --~e - - - - - - - - - - -
-,✓ I ~ .. _, I , ..... I ....
---------,,--I \ ........ ~ I \ ',
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Chapter 6 Entering and Editing Geometric Data
Table 6-1 Ranges of Expansion Ratios
nob / nc = 1 nob / nc = 2 nob / nc = 4
b/B = 0.10 S = 1 ft/mile
5 ft/mile
10 ft/mile
1.4 – 3.6
1.0 – 2.5
1.0 – 2.2
1.3 – 3.0
0.8 – 2.0
0.8 – 2.0
1.2 – 2.1
0.8 – 2.0
0.8 – 2.0
b/B = 0.25 S = 1 ft/mile
5 ft/mile
10 ft/mile
1.6 – 3.0
1.5 – 2.5
1.5 – 2.0
1.4 – 2.5
1.3 – 2.0
1.3 – 2.0
1.2 – 2.0
1.3 – 2.0
1.3 – 2.0
b/B = 0.50 S = 1 ft/mile
5 ft/mile
10 ft/mile
1.4 – 2.6
1.3 – 2.1
1.3 – 2.0
1.3 – 1.9
1.2 – 1.6
1.2 – 1.5
1.2 – 1.4
1.0 – 1.4
1.0 – 1.4
A detailed study of flow contraction and expansions at bridges was
undertaken by the Hydrologic Engineering Center. The results of this
study have been published as a research document entitled "Flow
Transitions in Bridge Backwater Analysis" (RD-42 HEC, 1995). The
purpose of this study was to provide better guidance to hydraulic
engineers performing water surface profile computations through
bridges. Specifically the study focused on determining the expansion
reach length, Le; the contraction reach length, Lc; the expansion
energy loss coefficient, Ce; and the contraction energy loss coefficient,
Cc. A summary of this research, and the final recommendations, can
be found in Appendix B of the HEC-RAS Hydraulic Reference manual.
The user should not allow the distance between cross section 1 and 2
to become so great that friction losses will not be adequately modeled.
If the modeler feels that the expansion reach will require a long
distance, then intermediate cross sections should be placed within the
expansion reach in order to adequately model friction losses. The user
will need to estimate ineffective flow areas for these intermediate
cross sections.
Cross section 2 is located a short distance downstream from the
bridge or culvert. This cross section should represent the natural
ground (main channel and floodplain) just downstream of the bridge or
culvert. This section is normally located near the toe of the
downstream road embankment. This cross section should Not be
placed immediately downstream of the face of the bridge deck or the
culvert opening (for example some people wrongly place this cross
section 1.0 foot downstream of the bridge deck or culvert opening).
Even if the bridge has no embankment, this cross section should be
placed far enough from the downstream face of the bridge to allow
enough distance for some flow expansion due to piers, or pressurized
6-28 Use low end of range (1.3:1) since slope is steeper than 10 ft/mile.
nob/ nc = 1
b/B = 0.50
10 ft/mile 1.3 - 2.0
HEC-RAS Plan: SMC Exist Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft)(ft)(ft)(ft)(ft/ft) (ft/s) (sq ft) (ft)
Reach-1 120 100-Year 15700.00 9.84 21.32 21.61 0.001074 5.37 3686.71 852.98 0.31
Reach-1 119 100-Year 15700.00 8.50 20.62 21.27 0.002466 8.39 2653.44 748.09 0.47
Reach-1 118 100-Year 15700.00 8.30 19.52 19.52 20.71 0.004904 11.26 2127.46 801.23 0.65
Reach-1 117 100-Year 15700.00 7.70 18.42 18.97 0.002670 7.46 2853.28 936.15 0.47
Reach-1 116 100-Year 15700.00 6.30 18.40 18.60 0.000768 4.14 4618.78 1243.32 0.25
Reach-1 115 100-Year 15700.00 5.70 18.32 18.47 0.000470 2.78 5114.11 1131.84 0.19
Reach-1 114 100-Year 15700.00 5.20 18.26 18.37 0.000402 3.61 5981.02 1393.48 0.19
Reach-1 113 100-Year 15700.00 3.60 18.15 18.28 0.000428 4.04 5711.65 1360.76 0.20
Reach-1 112 100-Year 15700.00 2.19 18.12 18.21 0.000223 3.16 6966.61 1321.10 0.15
Reach-1 111 100-Year 15700.00 2.19 18.05 18.16 0.000293 3.33 6185.65 1247.50 0.16
Reach-1 110 100-Year 15700.00 2.19 18.04 18.11 0.000180 2.45 7654.88 1355.08 0.13
Reach-1 109 100-Year 15700.00 2.19 17.98 18.07 0.000230 2.59 6675.80 1163.31 0.13
Reach-1 108 100-Year 15700.00 2.19 17.93 18.02 0.000235 2.68 6458.13 1048.71 0.13
Reach-1 107 100-Year 15700.00 2.12 17.75 17.94 0.000510 3.75 4506.06 734.65 0.19
Reach-1 106 100-Year 15700.00 2.12 17.70 17.85 0.000349 3.48 5244.57 826.32 0.16
Reach-1 105 100-Year 15700.00 2.10 17.59 17.77 0.000414 3.64 4672.34 685.44 0.17
Reach-1 104 100-Year 15700.00 2.12 17.53 17.68 0.000373 3.46 5222.78 853.26 0.17
Reach-1 103 100-Year 15700.00 2.12 17.40 17.59 0.000511 3.85 4512.57 755.08 0.19
Reach-1 102 100-Year 15700.00 2.12 17.20 17.45 0.000858 4.00 3973.67 716.10 0.22
Reach-1 101 100-Year 15700.00 2.12 16.79 14.90 17.21 0.001571 5.77 3086.41 704.27 0.30
Reach-1 100 100-Year 15700.00 2.10 13.17 13.17 16.17 0.014652 14.73 1232.88 224.61 0.88
HEC-RAS Plan: SMC Exist Cond
0 200 400 600 800 1000 1200 1400 16000
10
20
30
40
50
60
La Costa Golf Course
RS = 120
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 14000
10
20
30
40
50
La Costa Golf Course
RS = 119
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 14000
10
20
30
40
50
La Costa Golf Course
RS = 118
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
10
20
30
40
50
La Costa Golf Course
RS = 117
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
40
La Costa Golf Course
RS = 116
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
La Costa Golf Course
RS = 115
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
La Costa Golf Course
RS = 114
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
5
10
15
20
25
30
La Costa Golf Course
RS = 113
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
5
10
15
20
25
La Costa Golf Course
RS = 112
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03~ ,1-. ------------~
0 200 400 600 800 1000 1200 1400 16000
5
10
15
20
25
La Costa Golf Course
RS = 111
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .04 .03
0 200 400 600 800 1000 1200 14000
5
10
15
20
La Costa Golf Course
RS = 110
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .04 .03
0 200 400 600 800 1000 1200 14000
5
10
15
20
25
30
La Costa Golf Course
RS = 109
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .045 .03
-+
-+ t_j
0 200 400 600 800 1000 12000
5
10
15
20
25
30
La Costa Golf Course
RS = 108
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 107
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 106
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
+
+-tj
tj
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 105
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .045 .03
0 200 400 600 800 10002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 104
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 8002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 103
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .045 .03
+-tj
t:::_±+ ~============-==~:::== tj
0 100 200 300 400 500 600 700 8000
5
10
15
20
La Costa Golf Course
RS = 102
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.045 .05 .03
0 100 200 300 400 500 600 700 8002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 101
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .05 .03
0 100 200 300 400 5000
5
10
15
20
La Costa Golf Course
RS = 100
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .05 .05
t_j
t_j
t_j
HEC-RAS Plan: SMC Trib 1 Exist Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft)(ft)(ft)(ft)(ft/ft) (ft/s) (sq ft) (ft)
Reach-1 248 100-Year 1900.00 98.00 100.84 100.84 101.90 0.014978 8.54 256.03 136.10 0.94
Reach-1 247 100-Year 1900.00 95.67 99.03 98.07 99.33 0.004001 4.40 445.14 192.87 0.48
Reach-1 246 100-Year 1900.00 93.00 96.43 96.43 97.69 0.016769 9.00 212.09 284.76 0.99
Reach-1 245 100-Year 1900.00 91.37 94.66 94.10 95.08 0.007072 5.22 370.92 359.58 0.63
Reach-1 244 100-Year 1900.00 89.00 92.15 92.15 92.73 0.022037 6.07 313.56 287.10 1.00
Reach-1 243 100-Year 1900.00 87.33 90.47 89.68 90.64 0.003663 3.32 572.16 321.97 0.44
Reach-1 242 100-Year 1900.00 85.56 89.39 88.84 89.65 0.006812 4.16 458.81 298.45 0.58
Reach-1 241 100-Year 1900.00 84.33 87.54 87.94 0.010880 5.13 377.69 274.81 0.73
Reach-1 240 100-Year 1900.00 82.75 86.48 86.75 0.003540 2.90 500.55 289.41 0.42
Reach-1 239 100-Year 1900.00 82.03 86.08 86.26 0.001646 2.49 583.11 244.21 0.30
Reach-1 238 100-Year 1900.00 81.30 85.90 84.28 85.99 0.000926 2.00 796.67 364.22 0.23
Reach-1 237 100-Year 1900.00 77.89 84.48 84.48 85.37 0.009777 8.49 276.21 500.38 0.78
Reach-1 236 100-Year 1900.00 74.33 77.74 77.74 78.34 0.013524 6.64 307.51 424.35 0.84
Reach-1 235 100-Year 1900.00 72.00 74.85 74.66 75.52 0.011082 6.74 295.80 326.21 0.79
Reach-1 234 100-Year 1900.00 69.28 72.93 72.55 73.55 0.008633 6.52 307.63 303.44 0.71
Reach-1 233 100-Year 1900.00 68.84 70.74 70.64 71.34 0.014566 6.52 319.63 264.67 0.87
Reach-1 232 100-Year 1900.00 64.74 69.11 68.18 69.58 0.005692 5.46 350.41 394.67 0.58
Reach-1 231 100-Year 1900.00 63.55 66.97 66.91 67.91 0.012317 8.12 252.81 125.69 0.86
Reach-1 230 100-Year 1900.00 61.23 65.12 65.12 65.70 0.009997 6.98 332.72 258.09 0.76
Reach-1 229 100-Year 1900.00 59.70 63.27 63.69 0.005851 5.62 396.23 259.83 0.59
Reach-1 228 100-Year 1900.00 58.47 62.62 62.85 0.002816 3.84 503.37 209.32 0.41
Reach-1 227 100-Year 1900.00 54.26 62.26 57.82 62.55 0.000897 4.32 439.42 339.48 0.28
Reach-1 226.5 Culvert
Reach-1 226 100-Year 1900.00 50.26 58.85 59.42 0.002047 6.03 315.01 52.16 0.40
Reach-1 225 100-Year 1900.00 47.60 56.84 56.84 58.53 0.010112 11.62 189.60 54.96 0.76
Reach-1 224 100-Year 1900.00 46.80 53.08 53.08 53.62 0.005797 7.91 395.40 458.81 0.62
Reach-1 223 100-Year 1900.00 44.77 48.50 48.81 0.003316 4.53 462.70 276.97 0.45
Reach-1 222 100-Year 1900.00 44.00 46.62 46.62 47.32 0.013937 7.00 284.29 204.20 0.87
Reach-1 221 100-Year 1900.00 41.71 44.54 44.91 0.004822 5.15 412.50 247.44 0.54
Reach-1 220 100-Year 1900.00 36.75 43.36 43.36 43.87 0.005407 7.61 418.86 397.07 0.58
Reach-1 219 100-Year 1900.00 31.90 39.69 39.69 41.50 0.010315 11.03 186.63 60.54 0.82
Reach-1 218 100-Year 1900.00 30.80 38.66 38.66 39.92 0.008211 9.45 234.40 105.92 0.73
Reach-1 217 100-Year 1900.00 30.30 38.22 38.22 39.00 0.006064 8.93 308.73 162.89 0.61
Reach-1 216 100-Year 1900.00 29.80 37.33 37.33 38.12 0.005726 9.03 312.63 180.83 0.61
Reach-1 215 100-Year 1900.00 29.30 35.67 35.67 36.19 0.005883 7.55 396.29 355.32 0.62
Reach-1 214 100-Year 1900.00 25.40 33.42 33.42 34.02 0.006446 8.42 366.58 278.50 0.60
Reach-1 213 100-Year 1900.00 23.00 31.25 31.25 32.19 0.007229 8.95 269.67 124.52 0.65
Reach-1 212 100-Year 1900.00 23.00 29.49 29.49 30.22 0.008555 8.84 302.34 200.09 0.68
HEC-RAS Plan: SMC Trib 1 Exist Cond
HEC-RAS Plan: SMC Trib 1 Exist Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year (Continued)
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft)
Reach-1 211 100-Year 1900.00 17.80 27.15 27.65 0.002344 6.20 390.37 178.58 0.40
Reach-1 210 100-Year 1900.00 16.80 25.83 25.83 27.19 0.006808 9.84 230.74 107.68 0.66
Reach-1 209 100-Year 1900.00 16.50 25.18 25.18 25.79 0.004108 7.69 388.09 278.13 0.49
Reach-1 208 100-Year 1900.00 16.10 23.92 23.92 24.38 0.005095 7.05 435.17 442.21 0.55
Reach-1 207 100-Year 1900.00 15.60 22.14 22.14 22.77 0.005865 7.92 357.22 253.77 0.61
Reach-1 206 100-Year 1900.00 15.59 20.07 19.93 20.51 0.006844 6.87 390.15 435.89 0.64
Reach-1 205 100-Year 1900.00 15.60 19.46 19.34 19.84 0.006320 5.71 422.90 409.83 0.60
Reach-1 204 100-Year 1900.00 15.59 18.48 18.48 19.15 0.006769 5.26 315.58 235.79 0.60
Reach-1 203 100-Year 1900.00 15.59 18.17 18.41 0.002078 4.23 509.94 264.57 0.47
Reach-1 202 100-Year 1900.00 15.60 18.19 18.26 0.000545 2.18 889.60 365.02 0.24
Reach-1 201 100-Year 1900.00 15.60 18.10 18.20 0.000753 2.50 768.57 318.67 0.28
Reach-1 200 100-Year 1900.00 9.80 18.05 16.16 18.13 0.000503 2.73 840.74 281.77 0.18
0 50 100 150 200 250 300 35095
100
105
110
115
120
125
La Costa Golf Course
RS = 248
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 700 80095
100
105
110
115
120
125
La Costa Golf Course
RS = 247
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100090
95
100
105
110
115
120
La Costa Golf Course
RS = 246
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03+-
•
0 200 400 600 800 100090
95
100
105
110
La Costa Golf Course
RS = 245
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100085
90
95
100
105
110
La Costa Golf Course
RS = 244
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100085
90
95
100
105
110
La Costa Golf Course
RS = 243
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
•
•
•
0 100 200 300 400 500 60085
90
95
100
105
La Costa Golf Course
RS = 242
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60084
86
88
90
92
94
96
98
100
La Costa Golf Course
RS = 241
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 200 400 600 800 100080
85
90
95
100
105
La Costa Golf Course
RS = 240
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70080
85
90
95
100
La Costa Golf Course
RS = 239
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60080
85
90
95
100
105
La Costa Golf Course
RS = 238
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70076
78
80
82
84
86
88
90
92
94
96
La Costa Golf Course
RS = 237
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03--+
•
0 100 200 300 400 500 600 70070
75
80
85
90
95
La Costa Golf Course
RS = 236
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 80070
75
80
85
90
La Costa Golf Course
RS = 235
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70065
70
75
80
85
90
95
La Costa Golf Course
RS = 234
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
•
•
•
0 100 200 300 400 500 600 700 80065
70
75
80
85
90
95
La Costa Golf Course
RS = 233
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100060
65
70
75
80
85
90
95
100
La Costa Golf Course
RS = 232
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 700 80060
65
70
75
80
85
90
95
La Costa Golf Course
RS = 231
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
•
•
+-
0 100 200 300 400 500 600 70060
65
70
75
80
85
90
La Costa Golf Course
RS = 230
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60055
60
65
70
75
80
La Costa Golf Course
RS = 229
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70055
60
65
70
75
80
85
La Costa Golf Course
RS = 228
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03t t rn rn l]]
0 100 200 300 400 500 60050
55
60
65
70
75
80
La Costa Golf Course
RS = 227
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60050
55
60
65
70
75
80
La Costa Golf Course
RS = 226.5 Culv
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 20 40 60 80 100 12050
55
60
65
70
La Costa Golf Course
RS = 226
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
•
•
•
0 100 200 300 40045
50
55
60
65
70
75
La Costa Golf Course
RS = 225
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 600 700 80045
50
55
60
65
70
La Costa Golf Course
RS = 224
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 200 400 600 80040
45
50
55
60
65
70
75
La Costa Golf Course
RS = 223
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
•
t_j
0 100 200 300 400 500 600 70044
46
48
50
52
54
56
La Costa Golf Course
RS = 222
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60040
42
44
46
48
50
52
54
56
58
La Costa Golf Course
RS = 221
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60035
40
45
50
55
La Costa Golf Course
RS = 220
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
•
0 100 200 300 400 500 60030
35
40
45
50
55
La Costa Golf Course
RS = 219
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60030
35
40
45
50
55
La Costa Golf Course
RS = 218
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 600 70030
35
40
45
50
La Costa Golf Course
RS = 217
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
~ +
-+ tj
----+ ~-
•
0 100 200 300 400 500 600 70025
30
35
40
45
50
55
La Costa Golf Course
RS = 216
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04
.03
0 100 200 300 400 500 600 70028
30
32
34
36
38
40
42
44
46
La Costa Golf Course
RS = 215
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60025
30
35
40
45
50
La Costa Golf Course
RS = 214
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
•
t_j
0 50 100 150 200 250 300 35020
25
30
35
40
45
La Costa Golf Course
RS = 213
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 35022
24
26
28
30
32
34
La Costa Golf Course
RS = 212
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 35016
18
20
22
24
26
28
30
32
La Costa Golf Course
RS = 211
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 350 40015
20
25
30
35
40
La Costa Golf Course
RS = 210
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60016
18
20
22
24
26
28
30
La Costa Golf Course
RS = 209
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60016
18
20
22
24
26
28
30
La Costa Golf Course
RS = 208
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
,._____ )IE -----------~
•
•
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
30
La Costa Golf Course
RS = 207
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
La Costa Golf Course
RS = 206
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
La Costa Golf Course
RS = 205
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
t_j
0 100 200 300 400 500 600 70014
16
18
20
22
24
26
28
30
La Costa Golf Course
RS = 204
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60015
20
25
30
35
La Costa Golf Course
RS = 203
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
30
32
La Costa Golf Course
RS = 202
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
t_j
0 100 200 300 400 500 60014
16
18
20
22
24
26
La Costa Golf Course
RS = 201
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
0 100 200 300 400 5008
10
12
14
16
18
20
22
24
26
La Costa Golf Course
RS = 200
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
HEC-RAS Plan: SMC Prop Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft)(ft)(ft)(ft)(ft/ft) (ft/s) (sq ft) (ft)
Reach-1 120 100-Year 15700.00 9.84 21.32 21.61 0.001074 5.37 3686.69 852.98 0.31
Reach-1 119 100-Year 15700.00 8.50 20.62 21.27 0.002466 8.39 2653.42 748.09 0.47
Reach-1 118 100-Year 15700.00 8.30 19.52 19.52 20.71 0.004904 11.26 2127.46 801.23 0.65
Reach-1 117 100-Year 15700.00 7.70 18.44 18.98 0.002634 7.43 2909.53 983.66 0.47
Reach-1 116 100-Year 15700.00 6.30 18.42 18.62 0.000755 4.12 4646.68 1244.33 0.25
Reach-1 115 100-Year 15700.00 5.70 18.34 18.49 0.000473 2.80 5183.81 1148.62 0.19
Reach-1 114 100-Year 15700.00 5.20 18.27 18.39 0.000405 3.63 5941.22 1375.91 0.19
Reach-1 113 100-Year 15700.00 3.60 18.17 18.31 0.000420 4.01 5739.96 1358.31 0.20
Reach-1 112 100-Year 15700.00 2.19 18.14 18.23 0.000223 3.16 6956.75 1313.50 0.15
Reach-1 111 100-Year 15700.00 2.19 18.08 18.18 0.000284 3.29 6226.07 1278.98 0.15
Reach-1 110 100-Year 15700.00 2.19 18.07 18.13 0.000180 2.46 7634.29 1346.31 0.13
Reach-1 109 100-Year 15700.00 2.19 18.00 18.09 0.000229 2.58 6662.73 1152.75 0.13
Reach-1 108 100-Year 15700.00 2.19 17.95 18.05 0.000232 2.67 6485.01 1049.36 0.13
Reach-1 107 100-Year 15700.00 2.12 17.76 17.96 0.000538 3.86 4435.40 734.79 0.20
Reach-1 106 100-Year 15700.00 2.12 17.75 17.87 0.000264 3.03 5727.65 833.11 0.14
Reach-1 105 100-Year 15700.00 2.10 17.60 17.79 0.000483 3.94 4476.56 696.61 0.19
Reach-1 104 100-Year 15700.00 2.12 17.53 17.69 0.000421 3.68 5025.45 853.25 0.18
Reach-1 103 100-Year 15700.00 2.12 17.34 17.58 0.000694 4.48 4099.77 754.56 0.22
Reach-1 102 100-Year 15700.00 2.12 17.20 17.43 0.000732 3.69 4158.62 716.10 0.20
Reach-1 101 100-Year 15700.00 2.12 16.79 14.90 17.21 0.001571 5.77 3086.41 704.27 0.30
Reach-1 100 100-Year 15700.00 2.10 13.17 13.17 16.17 0.014652 14.73 1232.88 224.61 0.88
HEC-RAS Plan: SMC Prop Cond
0 200 400 600 800 1000 1200 1400 16000
10
20
30
40
50
60
La Costa Golf Course
RS = 120
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 14000
10
20
30
40
50
La Costa Golf Course
RS = 119
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 14000
10
20
30
40
50
La Costa Golf Course
RS = 118
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
10
20
30
40
50
La Costa Golf Course
RS = 117
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
40
La Costa Golf Course
RS = 116
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
La Costa Golf Course
RS = 115
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16005
10
15
20
25
30
35
La Costa Golf Course
RS = 114
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
5
10
15
20
25
30
La Costa Golf Course
RS = 113
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 200 400 600 800 1000 1200 1400 16000
5
10
15
20
25
La Costa Golf Course
RS = 112
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03~ ,1-. ------------~
0 200 400 600 800 1000 1200 1400 16002
4
6
8
10
12
14
16
18
20
La Costa Golf Course
RS = 111
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .04 .03
0 200 400 600 800 1000 1200 14000
5
10
15
20
La Costa Golf Course
RS = 110
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .04 .03
0 200 400 600 800 1000 1200 14000
5
10
15
20
25
30
La Costa Golf Course
RS = 109
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .045 .03
-+
-+ t_j
0 200 400 600 800 1000 12000
5
10
15
20
25
30
La Costa Golf Course
RS = 108
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 107
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 106
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
+
+-tj
tj
0 200 400 600 800 10000
5
10
15
20
25
La Costa Golf Course
RS = 105
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .045 .03
0 200 400 600 800 10002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 104
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.04 .045 .03
0 200 400 600 8002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 103
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .045 .03
+-t_j
t_±+ ~========~==~ t_j
0 100 200 300 400 500 600 700 8000
5
10
15
20
La Costa Golf Course
RS = 102
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.045 .05 .03
0 100 200 300 400 500 600 700 8002
4
6
8
10
12
14
16
18
La Costa Golf Course
RS = 101
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .05 .03
0 100 200 300 400 5000
5
10
15
20
La Costa Golf Course
RS = 100
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.02 .05 .05
t_j
t_j
t_j
HEC-RAS Plan: SMC Trib 1 Prop Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft)(ft)(ft)(ft)(ft/ft) (ft/s) (sq ft) (ft)
Reach-1 248 100-Year 1900.00 98.00 100.84 100.84 101.90 0.014978 8.54 256.03 136.10 0.94
Reach-1 247 100-Year 1900.00 95.67 99.03 98.07 99.32 0.004020 4.40 444.47 342.17 0.49
Reach-1 246 100-Year 1900.00 93.00 96.43 96.43 97.69 0.016769 9.00 212.09 236.29 0.99
Reach-1 245 100-Year 1900.00 91.37 94.63 94.06 95.01 0.006705 5.02 386.54 203.33 0.61
Reach-1 244 100-Year 1900.00 89.00 92.15 92.15 92.73 0.022037 6.07 313.56 287.10 1.00
Reach-1 243 100-Year 1900.00 87.33 90.47 89.68 90.64 0.003670 3.32 571.82 321.94 0.44
Reach-1 242 100-Year 1900.00 85.56 89.18 89.50 0.009834 4.57 426.86 349.90 0.68
Reach-1 241 100-Year 1900.00 84.33 88.07 88.27 0.003991 3.64 537.09 318.09 0.46
Reach-1 240 100-Year 1900.00 82.75 87.28 87.51 0.003644 3.91 503.15 257.12 0.45
Reach-1 239 100-Year 1900.00 82.03 86.61 86.85 0.003026 3.87 487.54 222.71 0.42
Reach-1 238 100-Year 1900.00 81.30 86.25 86.37 0.001691 2.95 678.64 385.06 0.32
Reach-1 237 100-Year 1900.00 77.89 84.68 84.68 85.48 0.008486 8.18 297.69 519.67 0.73
Reach-1 236 100-Year 1900.00 74.33 77.74 77.74 78.34 0.013501 6.64 307.68 427.30 0.84
Reach-1 235 100-Year 1900.00 72.00 73.87 73.87 74.63 0.011408 4.97 292.15 324.38 0.74
Reach-1 234 100-Year 1900.00 69.28 72.50 71.81 72.89 0.005925 5.06 382.07 181.67 0.58
Reach-1 233 100-Year 1900.00 69.00 70.75 70.51 71.25 0.011790 5.86 348.24 263.92 0.78
Reach-1 232 100-Year 1900.00 64.74 68.93 68.19 69.46 0.007046 5.86 325.86 370.64 0.64
Reach-1 231 100-Year 1900.00 63.55 67.34 66.90 68.01 0.007347 6.83 298.19 125.13 0.68
Reach-1 230 100-Year 1900.00 61.23 65.14 65.14 66.12 0.013771 8.23 241.70 170.62 0.90
Reach-1 229 100-Year 1900.00 59.70 63.29 63.72 0.005913 5.67 387.74 242.00 0.60
Reach-1 228 100-Year 1900.00 58.47 62.62 62.85 0.002947 3.92 489.72 198.76 0.42
Reach-1 227 100-Year 1900.00 54.26 62.26 57.82 62.55 0.000897 4.32 439.42 339.48 0.28
Reach-1 226.5 Culvert
Reach-1 226 100-Year 1900.00 50.26 58.85 59.42 0.002047 6.03 315.01 52.16 0.40
Reach-1 225 100-Year 1900.00 47.60 56.84 56.84 58.53 0.010112 11.62 189.60 54.96 0.76
Reach-1 224 100-Year 1900.00 46.80 53.19 53.19 53.69 0.005162 7.58 409.81 359.97 0.59
Reach-1 223 100-Year 1900.00 44.77 48.54 47.26 48.89 0.003599 4.75 404.62 272.92 0.47
Reach-1 222 100-Year 1900.00 44.00 46.61 46.61 47.32 0.014071 7.03 283.46 204.69 0.87
Reach-1 221 100-Year 1900.00 41.71 44.53 44.90 0.004887 5.17 407.95 237.11 0.54
Reach-1 220 100-Year 1900.00 36.75 43.34 43.34 43.86 0.005478 7.63 415.68 395.06 0.58
Reach-1 219 100-Year 1900.00 31.90 39.69 39.69 41.50 0.010315 11.03 186.63 60.54 0.82
Reach-1 218 100-Year 1900.00 30.80 39.42 38.51 40.36 0.005164 8.20 282.63 150.50 0.59
Reach-1 217 100-Year 1900.00 30.30 38.84 38.84 39.79 0.006221 9.60 291.67 156.06 0.63
Reach-1 216 100-Year 1900.00 29.80 36.92 36.92 38.57 0.010848 11.93 199.83 76.09 0.83
Reach-1 215 100-Year 1900.00 29.30 36.28 36.28 36.74 0.004469 7.14 443.05 529.29 0.55
Reach-1 214 100-Year 1900.00 25.40 33.40 33.91 0.005575 7.81 395.98 298.94 0.56
Reach-1 213 100-Year 1900.00 23.00 31.16 31.16 32.34 0.008765 9.74 235.08 93.88 0.72
Reach-1 212 100-Year 1900.00 23.00 29.49 29.49 30.16 0.007965 8.53 320.39 231.41 0.66
HEC-RAS Plan: SMC Trib 1 Prop Cond
HEC-RAS Plan: SMC Trib 1 Prop Cond River: RIVER-1 Reach: Reach-1 Profile: 100-Year (Continued)
Reach River Sta Profile Q Total Min Ch El W.S. Elev Crit W.S. E.G. Elev E.G. Slope Vel Chnl Flow Area Top Width Froude # Chl
(cfs) (ft) (ft) (ft) (ft) (ft/ft) (ft/s) (sq ft) (ft)
Reach-1 211 100-Year 1900.00 17.80 27.22 27.70 0.002233 6.08 405.16 191.61 0.39
Reach-1 210 100-Year 1900.00 16.80 25.55 25.55 27.19 0.008405 10.64 202.73 83.95 0.72
Reach-1 209 100-Year 1900.00 16.50 25.29 25.29 25.91 0.004056 7.71 378.25 264.19 0.49
Reach-1 208 100-Year 1900.00 16.10 23.92 23.92 24.43 0.005338 7.22 410.39 405.94 0.56
Reach-1 207 100-Year 1900.00 15.60 22.22 22.22 22.85 0.005703 7.89 356.91 263.18 0.61
Reach-1 206 100-Year 1900.00 15.59 20.24 19.90 20.62 0.005656 6.44 410.67 404.17 0.59
Reach-1 205 100-Year 1900.00 15.60 19.43 19.43 19.94 0.008085 6.42 366.40 377.93 0.68
Reach-1 204 100-Year 1900.00 15.59 18.45 18.45 19.16 0.007039 5.33 309.26 224.35 0.61
Reach-1 203 100-Year 1900.00 15.59 18.20 18.43 0.001985 4.16 518.11 265.78 0.46
Reach-1 202 100-Year 1900.00 15.60 18.22 18.29 0.000523 2.15 900.89 365.50 0.23
Reach-1 201 100-Year 1900.00 15.60 18.15 18.23 0.000660 2.37 835.17 372.56 0.26
Reach-1 200 100-Year 1900.00 9.80 18.08 16.14 18.17 0.000549 2.86 794.97 306.44 0.19
0 50 100 150 200 250 300 35095
100
105
110
115
120
125
La Costa Golf Course
RS = 248
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 700 80090
95
100
105
110
115
120
125
La Costa Golf Course
RS = 247
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100090
95
100
105
110
115
120
La Costa Golf Course
RS = 246
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03+-
•
0 200 400 600 800 100090
95
100
105
110
La Costa Golf Course
RS = 245
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100085
90
95
100
105
110
La Costa Golf Course
RS = 244
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100085
90
95
100
105
110
La Costa Golf Course
RS = 243
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
•
•
•
0 100 200 300 400 500 60085
90
95
100
105
La Costa Golf Course
RS = 242
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60084
86
88
90
92
94
96
98
100
La Costa Golf Course
RS = 241
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 200 400 600 800 100080
85
90
95
100
105
La Costa Golf Course
RS = 240
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70080
85
90
95
100
105
La Costa Golf Course
RS = 239
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60080
85
90
95
100
105
La Costa Golf Course
RS = 238
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70076
78
80
82
84
86
88
90
92
94
96
La Costa Golf Course
RS = 237
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
tj
--+
•
0 100 200 300 400 500 600 70070
75
80
85
90
95
La Costa Golf Course
RS = 236
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 80070
75
80
85
90
La Costa Golf Course
RS = 235
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70065
70
75
80
85
90
95
La Costa Golf Course
RS = 234
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
•
•
0 100 200 300 400 500 600 700 80065
70
75
80
85
90
95
La Costa Golf Course
RS = 233
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 200 400 600 800 100060
65
70
75
80
85
90
95
100
La Costa Golf Course
RS = 232
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 700 80060
65
70
75
80
85
90
95
La Costa Golf Course
RS = 231
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
•
+-
•
0 100 200 300 400 500 600 70060
65
70
75
80
85
90
La Costa Golf Course
RS = 230
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60055
60
65
70
75
80
La Costa Golf Course
RS = 229
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03
0 100 200 300 400 500 600 70055
60
65
70
75
80
85
La Costa Golf Course
RS = 228
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.06 .04 .03t t rn rn l]]
0 100 200 300 400 500 60050
55
60
65
70
75
80
La Costa Golf Course
RS = 227
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 100 200 300 400 500 60050
55
60
65
70
75
80
La Costa Golf Course
RS = 226.5 Culv
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.06 .04 .03
0 20 40 60 80 100 12050
55
60
65
70
La Costa Golf Course
RS = 226
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
•
•
•
0 100 200 300 40045
50
55
60
65
70
75
La Costa Golf Course
RS = 225
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 600 700 80045
50
55
60
65
70
La Costa Golf Course
RS = 224
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 200 400 600 80040
45
50
55
60
65
70
75
La Costa Golf Course
RS = 223
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
•
•
0 100 200 300 400 500 600 70044
46
48
50
52
54
56
La Costa Golf Course
RS = 222
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60040
42
44
46
48
50
52
54
56
58
La Costa Golf Course
RS = 221
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60035
40
45
50
55
La Costa Golf Course
RS = 220
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
•
0 100 200 300 400 500 60030
35
40
45
50
55
La Costa Golf Course
RS = 219
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60030
35
40
45
50
55
La Costa Golf Course
RS = 218
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 600 70030
35
40
45
50
La Costa Golf Course
RS = 217
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
~ +
-+ tj
----+ ~-
•
0 100 200 300 400 500 600 70025
30
35
40
45
50
55
La Costa Golf Course
RS = 216
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04
.03
0 100 200 300 400 500 600 70028
30
32
34
36
38
40
42
44
46
La Costa Golf Course
RS = 215
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60025
30
35
40
45
50
La Costa Golf Course
RS = 214
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
•
•
0 50 100 150 200 250 300 35020
25
30
35
40
45
La Costa Golf Course
RS = 213
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 35022
24
26
28
30
32
34
La Costa Golf Course
RS = 212
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 35016
18
20
22
24
26
28
30
32
La Costa Golf Course
RS = 211
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 50 100 150 200 250 300 350 40015
20
25
30
35
40
La Costa Golf Course
RS = 210
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60016
18
20
22
24
26
28
30
La Costa Golf Course
RS = 209
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60016
18
20
22
24
26
28
30
La Costa Golf Course
RS = 208
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
•
•
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
30
La Costa Golf Course
RS = 207
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
La Costa Golf Course
RS = 206
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
La Costa Golf Course
RS = 205
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
t_j
0 100 200 300 400 500 600 70014
16
18
20
22
24
26
28
30
La Costa Golf Course
RS = 204
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .04 .03
0 100 200 300 400 500 60014
16
18
20
22
24
26
28
30
32
34
La Costa Golf Course
RS = 203
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
0 100 200 300 400 50014
16
18
20
22
24
26
28
30
32
La Costa Golf Course
RS = 202
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
tj
0 100 200 300 400 500 60014
16
18
20
22
24
26
La Costa Golf Course
RS = 201
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Bank Sta
.03 .03 .03
0 100 200 300 400 5008
10
12
14
16
18
20
22
24
26
La Costa Golf Course
RS = 200
Station (ft)Elevation (ft)Legend
WS 100-Year
Ground
Ineff
Bank Sta
.03 .04 .03
•
14.3'
8.92' net height
84" are 165' Long
-
~
. .,.
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ii ?r' ::~> ·-:~: ~-~
---~:~ ,i'l ·:.: :.f, • , ., c ~ ,'= .,
--,--·:.~:~ :.:.:.~ = _:~-;'.~. t::~"-=:--=-
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GRAPHIC SCALE
300 0 150 300 600 1200
□~r£•:.•L•--1~1 l __ ~I
LEGEND:
1 INCH -300 FEET
SANGIS 2-FOOT CONTOUR TOPO (NAVO 88)
EXISTING CONDITION 100-YEAR FLOODPLAIN
PROPOSED CONDITION 100-YEAR FLOODPLAIN
HEC-RAS CROSS-SECTION
PROPOSED GRADING
HEC-RAS WORK MAP