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<br />... <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />'. <br />I. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />CWCS HvdroloQv Worksheet <br /> <br />Page 1 <br /> <br />Title 01 Study: <br />County: <br />Calculations By: <br /> <br />FIS - Pitkin County, Colorado and Incorporated Areas <br />Pitkin <br />J. Seamons Date: May 11, 2001 <br /> <br />Documentation <br />This workbook estimates 1 OO-year discharges lor approximate Iloodplains in Colorado using the lollowing <br />source: <br />Browning, T.W. 1999. Guidelines lor Determining 100-year Flood Flows lor Approximate <br />Floodplains in Colorado, Version 4.0. Colorado Water Conservation Board. January. <br /> <br />River Basin <br /> <br />COL-!: Colorado, Upper Colorado River Subregion <br />Status 01 Regression Equations lor this sub-region: <br /> <br />.... <br /> <br />Draft <br /> <br />Regression Equation Data <br />Q=aAb <br /> <br />Where: <br />Q = Discharge (cis) <br />A = Drainage Area (square miles) <br />a = coefficient = <br />b = coefficient = <br /> <br />79.5 <br />0.724 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area = <br /> <br />1 square miles <br />950 square miles <br /> <br />Discharge Calculations <br /> <br />Drainage Drainage 100-year <br />ArealD Drainage Area Description Area (mi") Discharge (cis) <br /> Roaring Fork River @ PtarmiQan Cr Conll. 25.98 841 <br /> Roaring Fork River @ Taggerts Lake 71.98 1,758 <br /> Lincoln Creek @ Grizzly Reservoir Inlet 11.52 467 <br /> Castle Cr @ Aspen corp. limit 71.77 1,754 . <br /> Hunter Creek 1000 ft u1s 01 Red Mountain Rd. 42.50 1,200 <br /> Difficuit Cr @ Roaring Fork River Conll. 16.46 604 <br /> Owl Cr (incl. Spring Cr) @ Roaring Fork River Conll. 8.57 377 <br /> Snowmass Cr @ Snowmass Cr Rd & Capitol Cr 63.54 1,606 <br /> Brush Creek 2.5 mi U/S 01 Snowmass Village eastern bounc 14.50 551 <br /> Capitol Cr @ Snowmass Creek Conll. 27.33 872 <br /> Little Elk Cr @ Capitol Cr 7.04 327 <br /> Woody Cr (incl. Little Woody Cr) @ Roaring Fork River Coni 49.06 1,332 <br /> Sopris Cr @ Pitkin/Eagle County Line 41.59 1,182 <br /> West Sopris Cr @ Sopris Cr Confl. 14.34 547 <br /> East Sopris Cr @ Sopris Cr Conll. 25.55 830 <br /> Prince Cr @ Pitkin/Garfield County Line 11.10 454 <br /> Thomas Cr @ Crystal Cr Conll. 5.70 280 <br /> Thompson Cr @ Crystal Cr Conll. 77.00 1,846 <br /> <br />5/11101 <br />CWCB_Hydrology(2).xfs <br />