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

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

Further study of Ohio Creek is suggested due to the influence of local ungaged diversions and short
period of record available on any of the three gages located on Ohio Creek.

Table 5.6.3.1 Flood Frequency Analysis Results for Reach 7 - Ohio Creek upstream of the
Confluence with the Gunnison River

Std. Flow (cfs)
Mean Dev. Skew Chance Exceedence
10% 2% 1% 0.2%
Peak 2.753 0.180 -0.600 931 1,155 1,234 1,391
1-Dav 2,691 0.190 -0.600 830 1,042 1,118 1,268
3-Day 2.665 0,190 -0,600 782 981 1,053 1,194
5-Day 2.642 0.190 -0.600 741 931 998 1,133
7 -Dav 2.629 0.190 -0.600 720 903 969 1,099
15-Day 2.572 0.190 -0.700 626 773 823 918
30-Day 2.506 0.200 -0.700 553 690 737 827
60-Day 2.431 0.200 -0.700 465 580 620 696

\

31