HomeMy WebLinkAboutU/M 92-05|; Buena Vista Creek Channel Maintenance Project; DRAINAGE REPORT; 2019-01-24Chang
Civil Engineering◦Hydrology◦Hydraulics◦Sedimentation
P.O. Box 9496
Rancho Santa Fe, CA 92067-4496
T: 858.692.0760
F: 858.832.1402 wayne@changconsultants.com
January 24, 2019
Danny Zimny
City of Carlsbad
Public Works -Transportation and Engineering
1635 Faraday Avenue
Carlsbad, CA 92008
Subject: Buena Vista Creek Maintenance Hydraulic Assessment
Dear Danny:
This letter provides hydraulic analyses to assess benefits resulting from the city of Carlsbad’s
Buena Vista Creek maintenance activities between Jefferson Street and Haymar Drive. This creek
segment is an engineered trapezoidal channel with a natural bottom and riprap-lined banks. The
channel is subject to dense vegetation growth and sedimentation, which significantly reduces its
flow capacity. City maintenance has occurred annually in the fall since 2014 and is based on a 5-
year program. Chang Consultant’s October 7, 2012 report, Hydraulic Analyses for Buena Vista
Creek Channel Maintenance Project, describes the program and assesses its floodplain benefits.
The maintenance involves hand removal within the northern half of the channel between the
Coastal Zone boundary approximately 900 feet east of Jefferson Street to Haymar Drive. At year
1, the westerly 1/5th of the channel segment is maintained. During each subsequent year, the next
1/5th segment is maintained progressing in the upstream direction. After 5-years, the cycle is
repeated. The 5-year plan was selected because it allows vegetation to continuously establish in
the channel, while providing significant flood protection benefits. The maintenance is performed
prior to each rainy season in order to maximize conveyance during subsequent flow periods.
According to Dudek, the channel vegetation is classified into two categories (fresh water marsh
and southern willow scrub) with differing growth rates. Freshwater marsh (FWM) will reach
approximately its mature size after 12 months. FWM will have 50 percent density after one year,
75 percent after two years, and 100 percent after three years. For southern willow scrub (SWS),
Dudek estimates that the species grow to an average 5 feet high after one year, 8 feet at two years,
12 feet at three years, 15 feet at four years, and 20 feet at five years. Full mature tree height and
trunk diameters will not be met for approximately 10 to 20 years. The percent cover for SWS is
estimated to be 25 percent after one year, 40 percent at two years, 60 percent at three years, 75
percent at four years, and 90 percent at five years. These estimates can change based upon variable
environmental conditions. The October 2012 report models these growth rates.
The following three hydraulic modeling scenarios have been assessed for this letter and the
following paragraphs describe each scenario.
1. Existing conditions model prior to maintenance activities, i.e., historic conditions
2. Current conditions without maintenance activities
3. Current conditions with maintenance activities
An existing condition HEC-RAS model was performed for the October 2012 report assuming no
maintenance. The model was based on 2005 topographic mapping, NGVD 29 vertical datum, and
roughness coefficients present at the time of modeling. The HEC-RAS Work Map is attached. The
majority of the study reach contained moderate to dense vegetation although some small portions
were concrete-lined with no vegetation. The associated roughness coefficients ranged from 0.014
(concrete-lining) to 0.10 (trees and dense vegetation). The results determined that the 100-year
flow will exceed the channel capacity at many locations. The results are attached and show that
the channel can convey approximately 3,200 cubic feet per second (cfs) before overtopping, which
corresponds to the 20-year event. The overtopping initiates at cross-section 1.597. For comparison,
the 100-year flow rate is 8,500 cfs.
In order to assess current conditions without maintenance, a field survey was performed in July
2018 from Jefferson Street to Haymar Road. The surveyed cross-sections are at different locations
than the 2012 cross-sections as indicated on the work map. The roughness coefficients are similar
to historic conditions in order to reflect no ongoing maintenance. The attached results show that
the channel capacity is approximately 2,900 cfs. Overtopping initiates at cross-section 1.540. This
capacity is less than historic conditions by 300 cfs. A comparison of the current and historic cross-
sections reveals that sediment has continued to deposit a few feet on the channel bed. The
deposition has reduced channel capacity over time.
The final HEC-RAS model reflects current conditions following the full 5-year maintenance cycle.
The channel roughness coefficients were lowered on the north side of the channel to reflect
vegetation removal. The attached results show that the channel capacity increases by 1,000 cfs to
3,900 cfs before overtopping at cross-section 1.540. Therefore, maintenance increases the channel
capacity significantly. This provides flood protection for adjacent areas including The Shoppes at
Carlsbad shopping mall to the south and private businesses to the north.
In summary, the hydraulic analyses show that the Buena Vista Creek channel cannot convey the
100-year flow rate under the modeled historic or current conditions. The channel capacity has
lessened over time due to deposition on the channel bed. Ongoing maintenance will increase the
capacity significantly and provide flood protection for an adjacent major retail center and private
businesses.
Sincerely,
Wayne W. Chang, M.S., P.E.
Enclosures
HEC-RAS Plan: Exist Cond River: RIVER-1 Reach: Reach-1 Profile: Exist CapacityReach 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 1.839 Exist Capacity 3200.00 11.77 20.98 21.91 0.002576 4.42548.34 83.27 0.26Reach-1 1.809 Exist Capacity 3200.00 11.77 20.36 21.45 0.002952 4.51523.07 85.17 0.27Reach-1 1.777 Exist Capacity 3200.00 11.77 18.96 20.69 0.006250 5.84422.51 74.92 0.38Reach-1 1.744 Exist Capacity 3200.00 11.77 19.38 16.78 20.28 0.000371 7.91 440.84 69.13 0.51Reach-1 1.739 BridgeReach-1 1.734 Exist Capacity 3200.00 11.77 19.35 20.23 0.000364 7.81445.61 70.49 0.50Reach-1 1.701 Exist Capacity 3200.00 11.77 19.53 19.91 0.007525 5.05666.61 104.09 0.32Reach-1 1.661 Exist Capacity 3200.00 9.77 18.95 19.09 0.002126 3.00 1101.10 142.21 0.17Reach-1 1.629 Exist Capacity 3200.00 9.77 18.59 18.72 0.002181 2.96 1109.65 144.86 0.18Reach-1 1.597 Exist Capacity 3200.00 9.77 18.16 18.31 0.002644 3.16 1057.30 157.70 0.19Reach-1 1.564 Exist Capacity 3200.00 9.77 17.71 17.85 0.002641 3.04 1080.94 154.61 0.19Reach-1 1.532 Exist Capacity 3200.00 9.77 17.13 17.31 0.003813 3.47 940.43 140.29 0.23Reach-1 1.498 Exist Capacity 3200.00 9.77 16.29 16.51 0.005234 3.75 865.50 144.08 0.26Reach-1 1.454 Exist Capacity 3200.00 5.77 15.79 15.90 0.001460 2.64 1247.07 143.01 0.15Reach-1 1.413 Exist Capacity 3200.00 5.77 15.45 15.57 0.001559 2.67 1211.87 143.40 0.15Reach-1 1.373 Exist Capacity 3200.00 5.77 15.08 15.21 0.001879 2.85 1144.06 142.29 0.16Reach-1 1.336 Exist Capacity 3200.00 5.77 14.72 9.08 14.88 0.001373 3.39 1002.46 135.18 0.20Reach-1 1.296 Exist Capacity 3200.00 5.77 14.34 9.30 14.55 0.001881 3.85 899.75 134.07 0.23Reach-1 1.255 Exist Capacity 3200.00 5.77 14.10 14.22 0.001028 2.80 1199.15 167.86 0.17Reach-1 1.214 Exist Capacity 3200.00 5.77 13.90 8.26 14.01 0.000916 2.60 1275.09 176.17 0.16Reach-1 1.174 Exist Capacity 3200.00 5.77 13.66 8.40 13.79 0.001194 2.91 1134.95 158.90 0.18Reach-1 1.135 Exist Capacity 3200.00 5.77 13.46 8.14 13.56 0.000957 2.56 1287.04 181.96 0.16Reach-1 1.1 Exist Capacity 3200.00 5.77 13.20 13.34 0.001413 3.04 1085.06 165.72 0.20Reach-1 1.066 Exist Capacity 3200.00 5.77 12.55 9.15 12.91 0.004194 4.92 674.93 113.73 0.33Reach-1 1.03 Exist Capacity 3200.00 5.77 11.11 10.16 12.49 0.0008989.72 416.10 90.34 0.74Reach-1 1.024 BridgeReach-1 1.017 Exist Capacity 3200.00 5.77 10.24 10.24 12.36 0.00172511.97 326.20 85.48 1.00Reach-1 1.005 Exist Capacity 3200.00 5.77 10.21 11.36 0.000913 8.66 397.49 99.16 0.72Reach-1 1 Exist Capacity 3200.00 5.77 10.76 8.30 11.09 0.001000 4.58 699.17 389.60 0.36
02040608010012014016010152025303540Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.839Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.075.075.014020406080100120140160101520253035Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.809Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.075.075.014020406080100120140160101520253035Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.777Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.075.075.014
020406080100120101214161820222426Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.744Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.014.01402040608010012010121416182022242628Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.739 BRStation (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.014.01402040608010012010121416182022242628Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.739 BRStation (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.014.014
020406080100120101214161820222426Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.734Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.014.014.01402040608010012014016010121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.701Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05020406080100120140160180810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.661Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05
020406080100120140160180810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.629Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.050204060801001201401601808101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.597Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05050100150200250810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.564Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05
0204060801001201401601808101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.532Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05050100150200810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.498Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05050100150200468101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.454Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05
020406080100120140160180468101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.413Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05050100150200468101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.373Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.1.1.1.05050100150200250468101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.336Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.05
05010015020025046810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.296Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.0505010015020025030035046810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.255Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.07.07.07.0505010015020025030046810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.214Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.05
05010015020025046810121416182022Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.174Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.05050100150200250300468101214161820Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.135Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.050501001502004681012141618Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.1Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.07.07.07.05
0501001502004681012141618Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.066Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.07.07.07.05020406080100120510152025Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.03Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.05.014.0502040608010012051015202530Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.024 BRStation (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.05.014.05
02040608010012014051015202530Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.024 BRStation (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.05.014.0502040608010012014051015202530Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.017Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.05.014.0505010015020025051015202530Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1.005Station (ft)Elevation (ft)LegendWS Exist CapacityGroundBank Sta.05.014.05
010020030040050051015202530Buena Vista Creek Channel Maintenance Plan: Exist Cond RS = 1Station (ft)Elevation (ft)LegendWS Exist CapacityGroundIneffBank Sta.03.03.03
HEC-RAS Plan: 2018 wo Maintenance River: RIVER-1 Reach: Reach-1 Profile: nario 2 CapacityReach 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 1.631 nario 2 Capacity 2900.00 9.20 18.28 18.43 0.003082 3.17 941.43 143.89 0.20Reach-1 1.61 nario 2 Capacity 2900.00 10.00 17.92 18.08 0.003307 3.19 914.40 143.60 0.21Reach-1 1.557 nario 2 Capacity 2900.00 6.00 17.24 17.37 0.001969 2.77 1059.87 146.85 0.17Reach-1 1.54 nario 2 Capacity 2900.00 8.00 16.97 17.14 0.003115 3.14 913.59 141.11 0.20Reach-1 1.513 nario 2 Capacity 2900.00 8.00 16.55 16.70 0.002791 3.07 959.11 142.81 0.19Reach-1 1.446 nario 2 Capacity 2900.00 6.00 15.64 15.77 0.002457 2.95 995.54 141.45 0.18Reach-1 1.436 nario 2 Capacity 2900.00 6.00 15.51 15.65 0.002345 2.92 1013.21 141.17 0.18Reach-1 1.355 nario 2 Capacity 2900.00 4.00 14.60 14.74 0.001921 3.00 986.86 145.66 0.19Reach-1 1.271 nario 2 Capacity 2900.00 3.00 13.79 13.95 0.001631 3.30 909.82 138.99 0.21Reach-1 1.247 nario 2 Capacity 2900.00 4.00 13.66 13.76 0.001151 2.62 1138.18 180.07 0.17Reach-1 1.168 nario 2 Capacity 2900.00 4.00 13.03 13.18 0.001714 3.09 959.34 158.99 0.21Reach-1 1.156 nario 2 Capacity 2900.00 4.00 12.95 13.08 0.001382 2.87 1038.45 165.65 0.19Reach-1 1.069 nario 2 Capacity 2900.00 -1.19 12.30 12.45 0.001335 3.15 953.59 132.29 0.19Reach-1 1.03 nario 2 Capacity 2900.00 5.77 10.87 9.90 12.12 0.000865 9.25 394.14 89.55 0.72Reach-1 1.017 nario 2 Capacity 2900.00 5.77 9.98 9.98 11.96 0.00175011.57 303.43 84.55 0.99Reach-1 1.005 nario 2 Capacity 2900.00 5.77 9.97 11.03 0.000906 8.31373.56 97.99 0.72Reach-1 1.000 nario 2 Capacity 2900.00 5.77 10.48 8.13 10.78 0.001002 4.40 658.82 387.88 0.36
0204060801001201401608101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.631Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.05020406080100120140160101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.61Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.0502040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.557Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.05
02040608010012014016081012141618Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.54Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.050204060801001201401608101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.513Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.0502040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.446Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.05
02040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.436Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.1.1.1.05020406080100120140160180468101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.355Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.085.085.085.050204060801001201401602468101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.271Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.07.07.07.05
0501001502002500510152025Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.247Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.07.07.07.050501001502004681012141618Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.168Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.07.07.07.050501001502004681012141618Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.156Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.07.07.07.05
020406080100120140160-20246810121416Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.069Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.07.07.07.05020406080100120510152025Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.03Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.05.014.0502040608010012014051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.017Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.05.014.05
05010015020025051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.005Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundBank Sta.05.014.05010020030040050051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Without Maintenance RS = 1.000Station (ft)Elevation (ft)LegendWS nario 2 CapacityGroundIneffBank Sta.03.03.03
HEC-RAS Plan: 2018 with Maintenance River: RIVER-1 Reach: Reach-1 Profile: nario 3 CapacityReach 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 1.631 nario 3 Capacity 3900.00 9.20 17.94 18.27 0.001977 4.72 893.16 142.16 0.31Reach-1 1.61 nario 3 Capacity 3900.00 10.00 17.71 18.04 0.002229 4.72 884.86 142.62 0.31Reach-1 1.557 nario 3 Capacity 3900.00 6.00 17.30 17.53 0.001365 3.97 1068.20 147.17 0.24Reach-1 1.54 nario 3 Capacity 3900.00 8.00 17.07 17.37 0.002358 4.43 927.63 141.37 0.29Reach-1 1.513 nario 3 Capacity 3900.00 8.00 16.79 17.05 0.001862 4.21 992.78 143.97 0.26Reach-1 1.446 nario 3 Capacity 3900.00 6.00 16.28 16.49 0.001287 3.80 1087.14 144.15 0.23Reach-1 1.436 nario 3 Capacity 3900.00 6.00 16.21 16.42 0.001564 3.72 1112.61 144.07 0.22Reach-1 1.355 nario 3 Capacity 3900.00 4.00 15.60 15.80 0.001325 3.62 1135.02 150.21 0.22Reach-1 1.271 nario 3 Capacity 3900.00 3.00 14.95 15.16 0.001540 3.81 1074.11 144.66 0.23Reach-1 1.247 nario 3 Capacity 3900.00 4.00 14.85 14.98 0.001033 2.99 1355.47 185.93 0.18Reach-1 1.168 nario 3 Capacity 3900.00 4.00 14.28 14.46 0.001502 3.47 1160.92 164.51 0.22Reach-1 1.156 nario 3 Capacity 3900.00 4.00 14.21 14.37 0.001251 3.24 1250.59 171.41 0.20Reach-1 1.069 nario 3 Capacity 3900.00 -1.19 13.57 13.77 0.001334 3.64 1126.69 142.13 0.21Reach-1 1.03 nario 3 Capacity 3900.00 5.77 11.88 10.77 13.42 0.000845 10.31 486.03 92.81 0.74Reach-1 1.017 nario 3 Capacity 3900.00 5.77 10.86 10.86 13.25 0.001645 12.74 379.75 87.61 1.00Reach-1 1.005 nario 3 Capacity 3900.00 5.77 10.73 12.09 0.000933 9.43 449.68 101.68 0.75Reach-1 1.000 nario 3 Capacity 3900.00 5.77 11.39 8.65 11.77 0.001001 4.96 787.08 393.37 0.37
0204060801001201401608101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.631Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.035.05020406080100120140160101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.61Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.035.0502040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.557Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.044.05
02040608010012014016081012141618Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.54Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.0445.050204060801001201401608101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.513Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.0445.0502040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.446Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.0445.05
02040608010012014016068101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.436Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.1.1.053.05020406080100120140160180468101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.355Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.085.085.053.050204060801001201401602468101214161820Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.271Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.07.07.06.05
0501001502002500510152025Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.247Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.07.07.06.050501001502004681012141618Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.168Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.07.07.062.050501001502004681012141618Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.156Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.07.07.063.05
020406080100120140160-20246810121416Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.069Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.07.07.065.05020406080100120510152025Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.03Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.05.014.0502040608010012014051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.017Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.05.014.05
05010015020025051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.005Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundBank Sta.05.014.05010020030040050051015202530Buena Vista Creek Channel Maintenance Plan: 2018 Wtih Maintenance RS = 1.000Station (ft)Elevation (ft)LegendWS nario 3 CapacityGroundIneffBank Sta.03.03.03