FLOOD09695

• County: Weld
• Basin: South Platte
• Title: Project Notebook for I-25 Corridor Master Drainage Plan South Weld County: Volume 1 of 2
• Date: 12/6/1999
• Prepared For: Weld County Public Works
• Prepared By: Anderson Consulting Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Project Notebook Table I. Inventory of Existing Drainage Facilities - Godding Hollow Basin

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Existing Existing
Maximum Maximum Condition Condition
Facility Name Location Condition Structure Storage Discharge Peak Peak
and/or Type [UDSWMM ID] Dimensions Volume Capacity' 2-Year 100Year
(acre-ft) (cfs) Discharge Discharge
(cfs) (cfs)
MAIN CHANNEL
WCR 26 RCB Between WCR II and fair I span=8.5' N/A 210 560 1,890
WCR 13 [202] rise=3'
Last Chance Ditch Between WCR II and poor width = 12' N/A 370 560 1,890
Flume WCR 13 [202] length =30'
WCR 24 Arch CMP Between 1-25 and WCR fair span=8' N/A 240 290 1,000
11 [203] rise=6'
IwCR 22 Arch CMP Between 1-25 and WCR i fair span=7.5' N/A 300 280 980
11 [204] . rise=6'
Godding Ditch I S. of WCR 22 [204] i fair width=60' N/A 3,000 280 980
Bridge/Flume length=8.5'
IwcR 20 Arch CMP I Between 1-25 and WCR I span = 8'
II [205] fair I rise=6' N/A 210 290 980
I Between 1-25 and WCR I ; span=8'
WCR 18 Arch CMP II [206] fair I rise=6' N/A 190 300 960
I Between 1-25 and WCR I fair, I
WCR 16 Arch CMP vegetation, span=8' N/A 160 250 860
r""j ill [207] I encroachment . rise=6'
I .
.W 52 Pond and iBetween 1-25 and WCR I good span=8' 58 1,000 220 750
.,CB Outlet i 11 [308] rise=6'
Coalridge Ditch Pond 10.2 miles S. of SHW good, some span=7'
sediment 32 790 200 780
and RCB Outlet 52 [309] hlockage rise=7'
Between 1-25 and WCR fair,
WCR 12 CMP 11 [210] vegetation, diam.=3' N/A 60 180 780
encroachment
~~5 E. Frontage Road iN. ofWCR 10 E. side good span=3@20' N/A 2,050 40 260
imber Bridge i of 1-25 [213] rise=5.5'
I span=2@11'
1-25 Triple Barrel RCB I N. of WCR 10 on 1-25 good 1@14' N/A 2,460 40 260
[213] rise=6'
West WCR 10 Arch Between 1-25 and WCR poor, span=3.5'
CMP II [216] vegetation, rise=2' N/A 40 20 160
i scour
UPRR Timber Bridge S. WCR 10, between good span=3@13' N/A 1,450 20 120
WCR 7 and 1-25 [217] rise=2.5'
OTHER TRIBUTARY STRUCTURES
I-25/WCR 18 Pond Between WCR 16/18 at I fair I diam.=2' 170 140 40 80
!with Twin RCP Outlets 1-25 [341] diam.=3'
I-25/SHW 52 Pond 0.15 miles N. of SHW fair,
undersized diam.=3' 82 90 5 60
RCP/C~P Outlet 52 at 1-25 [321] outlet
biO'" I WCR 10, S. of I .
It WCR 10 CMP I Speedway [236J fair diam. =4' N/A 70 80 370
I
'1~-25 Double Barrel IN. ofWCR 8 on 1-25 I fair, I foot of span= 10' N/A 430 70 310 I
RCB [237] deposition rise=3'

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T:l,OPEMCowtIdOl1co~IdOJ pnb gadding hollow Ibl J. wpd

NoytrmMr U. 1999