FLOOD06828

• Designation Number: 177
• County: Jefferson
• Community: Unincorporated Jefferson County
• Stream Name: Weaver Creek
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Weaver Creek
• Date: 5/1/1981
• Designation Date: 9/1/1981
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 1
UNIT HYDROGRAPH INPUT SUt1MARY
Sub Impervious Basin Basin Length to Basin Hydrograph
Basin Area C C ArZa Length Centroid Slope Technique
No. (%) t ---.E. (mi ) (mi) (mi) (ft/ft) Used
1 10 1. 09 .76 .43 .97 .39 .223 SYNHYDl
2 15 .90 .92 .37 1. 04 .39 .250 n
3 24 .66 .74 .66 1. 43 .43 .083 CUHp2
4 26 .61 .71 .90 1. 54 .55 .083 n
5 31 .49 .74 .35 1. 09 .45 .103 n
6 38 .41 .68 .37 1. 34 .63 .095 n
7 33 .47 .73 1. 70 1. 83 .93 .064 n
8 32 .48 .73 1. 49 2.57 1. 36 .022 n
9 40 .40 .67 .25 1.19 .61 .039 n

Notes: 1. SYNHYD is a synthetic unit hydrograph program developed specifically for undeveloped basins.
It is described more specifically in the backup calculations for the hydrologic analysis,
available at the District.

2. CUHP is described in the Urban Storm Drainage Criteria Manual, 1969.

~ Leonard Rice Consulting Water Engineers. Inc.