FLOOD10363 ‎(2)‎

• County: Gunnison
• Community: Gunnison County
• Stream Name: East River, Cement Creek, Alkali Creek, Ohio Creek
• Title: Gunnison County Flood Hydrology, Contract # W99-D-0018 Final Report
• Date: 11/1/2004
• Prepared For: US Army Corps of Engineers, CWCB and Gunnison County
• Prepared By: Tetra Tech, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 5.3.3.1 Flood Frequency Analysis Results for Reach 4 - East River from Cement Creek to
Alkali Creek

Std. Flow (cfs)
Mean Dev. Skew Chance Exceedence
10% 2% 1% 0.2%
Peak 3.336 0.140 0.000 3,277 4,203 4,589 5,482
1-Day 3,295 0.140 0.000 2,981 3,824 4,175 4,988
3-Day 3.281 0.140 0.000 2,887 3,703 4,043 4,830
5-Day 3.267 0.140 0.000 2,795 3,585 3,915 4,677
7 -Day 3.254 0.140 -0.100 2,703 3,41 9 3,710 4,365
15-Day 3.205 0.140 -0.100 2,415 3,055 3,314 3,899
30-Day 3.155 0,140 -0.100 2,152 2,722 2,954 3,475
60-Day 3.069 0.150 -0.200 1,810 2,295 2,487 2,914

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