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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 />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />I. <br />I. <br />I! <br /> <br />CWCB HvdroloGv Worksheet <br /> <br />Page 2 <br /> <br />Title of Study: <br />County: <br />Calculations By: <br /> <br />FIRM - Montrose County Unincorporated Areas <br />Montrose <br />jag Date: November 3, 2000 <br /> <br />Documentation <br />This workbook estimates 1 DO-year discharges for approximate floodplains in Colorado using the following <br />source: <br />Browning, T.W. 1999. Guidelines for Determining l00-year Flood Flows for Approximate <br />Floodplains in Colorado, Version 4,0. Colorado Water Conservation Board. January. <br /> <br />River Basin <br /> <br />I Dt.R-l:~o~, DclI~~ River ~bregion <br />Status of Regression Equations for this sub-region: <br /> <br />G <br /> <br />Draft <br /> <br />Regression Equation Dats <br />Q=aAb <br /> <br />Where: <br />Q = Discharge (cis) <br />A = Drainage Area (square miles) <br />a = coefficient = <br />b = coefficient = <br /> <br />213.8 <br />0.601 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area = <br /> <br />2 square miles <br />1080 square miles <br /> <br />Discharge Calculations <br /> <br />Discharge Drainage l00-year <br />Point 10 Discharge Point Description Area (mi") Discharge (cis) <br />019 Calamity Draw - at mouth 8.83 792 <br />020 San Miguel- immediately U/S of Tabaguache Creek 1300,57 Outside Bounds <br />021 Tabaguache Creek - at mouth 151.15 4,363 <br />022 San Miguel. at mouth 1504.88 Outside Bounds <br />023 East Paradox Creek - at mouth 45.09 2,109 <br /> <br />11/3/00 <br />CWCB_Hydrology.x1s <br />