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<br />.' <br /> <br />mLORAlX) WATER mNSERVATION BOARD <br />INSTREAM FLOW RECCMMENDATIONS <br /> <br />RECCMMENDATION SUMMARY REPORT <br /> <br />,TREAM: West Alder Creek <br />'ATERSHED: Rio Grande <br /> <br />ID: 89/3/A-04 <br />DIV: 3 ,COUNTY: Rio Grande <br /> <br />iECCM1ENDATION <br />FLOW Icfsl: 2.0 14/1-10/311 <br />1. 0 (11/1-3/311 <br /> <br />LENGTH (miles): <br /> <br />5.6 <br /> <br />UPPER TER~INUS: confl E Fk West Alder Creek at <br />lat 37 46 llN long 106 41 18W <br /> <br />LOWER TERMINUS: confl East Alder Creek at <br />lat 37 42 16N long 106 38 50W <br /> <br />USGS QUADS: Pool Table Mtn, South Fork West <br /> <br />"'ISH SURVEY <br />row mDE: <br />SAMPLE SUMMARY: <br /> <br />DATE: 09/15/88 <br />lOCATION: Approx. 900' u/s of lower tenninus <br />100 ft electrofished. Sample included 15 Brown trout, <br />3"-11". Aquatic insects include Pleoptera, Tricoptera, <br />Mayfly. <br /> <br />Diptera, and <br /> <br />F'IELD SURVEY <br />CROSS-SECTION lOCATION: <br />MEASURED FLOW (cfs): 2.34 <br />REMARKS: Clear and Calm. <br /> <br />. DATE: 09/15/88 <br />Approx. 900' u/s of lower tenninus <br />GRASSLINE wmTH (ft): 11. 3 PHaros: Y <br /> <br />NDRAULIC ANALYSIS <br />AT REro1MENDED <br />FLOW (cfs): <br /> <br />REMARKS : <br /> <br />AVE DEPTH 1ft): .26-.30 <br />% WET PERIM.: 86%-89% <br />AVE VEL. Ifpsl: .30-.34 <br />2 cfs meets 2 of 3 criteria (avg. depth and wetted perimeter I and <br />is required to maintain this fishery. Lower winter flow requirement <br />(1 cfs) based on water availability. <br /> <br />2.0 (4/1-10/31) <br /> <br />vATER AVAILABILITY <br />METHOD: Synthesized from USGS gas;;e data on La Garita Creek <br />AVERAGE OONTHLY F1.OWS (cfs) <br />OCT NOV DEC JAN FEE MAR APR MAY JUN JUL AUG SEP <br />2.04 1.72 1.33 1.12 1.37 1.93 4.52 12.87 9.96 4.50 4.49 2.42 <br />IMPORTED WATER: None TRANSBASIN DrVS: None <br />INBASIN DIVERSIONS: None <br />REMARKS: See attached hydrograph <br /> <br />mNSULTATIONS <br />noW: Jay Skinner <br />DWR: Steve Vandiver <br /> <br />02/03/89 <br />02/08/89 <br /> <br />ffiEPARED BY: Park <br /> <br />APPOOVED BY: (, / :. <br /> <br />DATE: :. /' /.:. <br /> <br />/ <br />