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<br />. <br /> <br />. <br /> <br />. <br /> <br />COLORADO WATER CONSERVATION BOARD <br />INSTREAM FLOW RECOMMENDATIONS <br /> <br />RECOMMENDATION SUMMARY REPORT <br /> <br />STREAM: Boulder Creek <br />WATERSHED: South Platte <br /> <br />ID: <br />DIV: 1 ,COUNTY: Boulder <br /> <br />RECOMMENDATION <br />FLOW (cfs): 15.0(4/1-10/31) <br />6.0 (11/1-3/31) <br /> <br />LENGTH (miles): <br /> <br />4.5 <br /> <br />UPPER TERMINUS: <br /> <br />confl of N & M Boulder Creeks in <br />NE/4 SW/4 S36 TIN R72W 6PM <br /> <br />LOWE:1. TERMINUS: <br /> <br />PSC Hydro Plant outlet in <br />NE/4 SW/4 S34 TIN R71W 6PM <br /> <br />USGS QUADS: <br /> <br />Gold Hill, Tungsten, Boulder <br /> <br />FISH SURVEY <br />DOW CODE: 10241 <br />SAMPLE SUMMARY: <br /> <br />DATE: 09/27/90 <br />LOCATION: 1/4 mile below N Boulder Cr conf1. <br />325 ft e1ectrofished. Sample included: 14 Brook Trout up to <br />B" and 116 Rainbow Trout, 2-9". <br /> <br />FIELD SURVEY <br />CROSS SECTION LOCATION: 1.4 <br />MEASURED FLOW (cfs): 15.B3 <br />REMARKS: None <br /> <br />DATE: 09/24/91 <br />miles u/s of Sugar loaf Road <br />GRASSLINE WIDTH (ft): 33.9 PHOTOS: Y <br /> <br />HYDRAULIC ANALYSIS <br />AT RECOMMENDED <br />FLOW (cfs): <br /> <br />REMARKS: <br /> <br />AVE DEPTH (ft): 0.56-0.60 <br />% WET PERIM.: B1%-82% <br />AVE VEL. (fps): 0.89-0.93 <br />15.0 cfs meets 2 of 3 criteria (avg. depth and wetted perimeter) <br />and is required to maintain this fishery. Lower winter flow (6 cfs) <br />requirement based on DOW biological recommendation. <br /> <br />15.0(4/1-10/31) <br /> <br />. WATER AVAILABILITY <br />METHOD: Estimated from USGS Gage at Orodell <br />AVERAGE MONTHLY FLOWS (cfs) <br />OCT NOV DEC JAN FEB MAR APR MAY JON. JUL AUG SEP <br />26.2 6.9 5.9 6.1 6.6 6.7 47.5 138.7 296.7 217.0 86.2 41.0 <br />IMPORTED WATER: None. TRANSBASIN DIVS: None. <br />INBASIN DIVERSIONS: <br />REMARKS: See attached hydrograph. <br />Donated rights provide water for appropriation in this reach. <br /> <br />CONSULTATIONS <br />DOW: Jay Skinner <br />DWR: Alan Berryman <br /> <br />01/19/93 <br />02/23/93 <br /> <br /> <br />DATE: <br /> <br />Z/z..-=::j)':>.., <br />I I <br /> <br />PREPARED BY: <br /> <br />Baessler <br /> <br />APPROVED BY: <br />