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<br />NATURAL ENVIRONMENT SURVEY <br /> <br />9/21/98 - Final RSR <br /> <br />Survey Date: 10/1186 <br /> <br />Survey Location: <br />_ Survey Summary: <br />. Basis for ISF: <br /> <br />112 mile uls of confluence with Lake Creek <br />100' electrofished. Sample included: 3 rainbow trout (4"-5"). <br />rainbow trout fishery. <br /> <br />FIELD SURVEY <br /> <br />Survey Date: 10/1/86 <br /> <br />Method Used: R2X <br />Measured Flow (cfs): 3.53 <br />Survey Location: SE S25 TllS R81W 6 PM <br />Notes: 1500' uls of confluence with Little Willis Creek <br /> <br />Grassline Width (ft): 15.4 <br />PHOTOS: 4 <br /> <br />WATER AVAILABILITY <br /> <br />Method: <br /> <br />The Willis Gulch hydrograph was derived using a percentage of the flow data from the stream <br />gage on Lake Creek above Twin Lakes Reservoir (ID #07084500). See hydro graph below. The <br />winter instream flow reccomendation was reduced to 1.0 cfs (1/1-3/31) As per the Division 2 <br />Engineer, senior water rights do not present a water availability problem within this reach of <br />stream. <br /> <br />OCT NOV DEC <br />4.9 3.0 2.2 <br /> <br />MEDIAN MONTHLY FLOWS (cfs) <br />IAN FEB MAR APR MAY JUN <br />1.8 1.6 1.5 2.3 11. 80. <br /> <br />JUL <br />38. <br /> <br />AUG SEP <br />14. 7.4 <br /> <br /> <br />% Lake Creek above Twin Lakes Reservoir (10 # 07084500) <br />1946-93 <br /> <br />10 <br /> <br />~ <br />~ 6 <br />Ii! <br />i 4 <br /> <br />Z <br />~ <br /> <br /> <br /> <br />6 <br /> <br />-------- <br /> <br />2 <br /> <br />---- --- <br /> <br />o <br /> <br />OCT <br /> <br />NQV <br /> <br />DEe <br /> <br />JAN <br /> <br />FEB <br /> <br />MAR APR <br />M:lNlH <br /> <br />MAY <br /> <br />JUN <br /> <br />JUL <br /> <br />AUG <br /> <br />SEP <br /> <br />OCT <br /> <br />1""'"i52.""" <br /> <br />_ CWCB ISF AI.fJLNT <br /> <br />OJ,, 2 Rec Sum Rpt <br />