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<br />ji~~~ <br /> <br />NATURAL ENVIRONMENT SURVEY <br /> <br />Survey Date: 8/19/86 <br /> <br />Survey Location: <br />Survey Summary: <br /> <br />2 miles north of Highway 50 . . <br />250 ft eledrofished. Sample included:17 brook trout (2". 6"),1 rainbow trout (7'~ <br />brown trout (5"- 8"). .. <br />brook, rainbow and brown trout fishery <br /> <br />Basis for ISF: <br /> <br />FIELD SURVEY <br /> <br />Survey Date: 8/17/88 <br /> <br />Method Used: R2X I Grassline Width (ft): 19 <br />Measured Flow (cfs): 4.6 PHOTOS: 3 <br />Survey Location: 3/4 mile uls of confluence with Gunnison River <br />Notes: Heavy rain previous day, stream clear, normal appearance. <br /> <br />WATER AVAILABILITY <br /> <br />Method: <br />Remarks: <br /> <br />The Beaver Creek hydrograph was derived as per USGS WRI Report 85-4086. <br />See attached hydrograph. The winter instream flow recommendation was reduced to 1.5 cfs <br />(11/15-3/31) based on water availability analysis. As per the Division 4 Engineer, senior water <br />rights do not present a water availability problem within this reach of stream. <br /> <br />OCT NOV DEC <br />3.3 2.5 1.9 <br /> <br />MEAN MONTHLY FLOWS (cfs) <br />IAN FEB MAR APR MAY JUN <br />1.6 1.6 2.1 6.1 30. 50. <br /> <br />JUL <br />12. <br /> <br />AUG SEP <br />5.3 3.6 <br /> <br />Beaver Creek u/s of Gunnison River <br />SYNTHETIC HYDROGRAPH <br /> <br /> 10 <br />., <br />"- <br />0 <br />- 8 <br />;: <br />0 <br />.... <br />"- <br />> 6 <br />.... <br />J: <br />I- <br />Z 4 <br />0 <br />::; <br />z <br />~ -- <br />2 <br />::; ---- <br /> 0 <br /> OCT NOV DEC JAN <br /> <br />------ <br /> <br /> <br /> <br />---- <br /> <br />-- <br /> <br />FEB MAR APR MAY JUN <br />MONTH <br /> <br />JUL <br /> <br />AUG SEP <br /> <br />OCT <br /> <br />Ibeav'2,Wk41 <br /> <br />- CWCB ISF AMOUNT <br /> <br />e <br />