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<br />. <br />. <br />I: <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 />. <br />. <br />,. <br />. <br />!. <br />I. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br />CWCS HvdroloQV Worksheet <br /> <br />Page 1 <br /> <br />Title of Study: <br />County: <br />Calculations By: <br /> <br />FIS - Adams County, Colorado and Incorporated Areas <br />Adams <br />jag Date: August 10, 2000 <br /> <br />Documentation <br />This workbook estimates 1 OO-year discharges for approximate floodplains in Colorado using the following <br />source: <br />Browning, TW. 1999. Guidelines for Determining 100-year Flood Flows for Approximate <br />Floodplains in Colorado, Version 4.0. Colorado Water ConseNation Board. January. <br /> <br />River Basin <br /> <br />SPL-l: South Platte, Eastern Plains Subregion <br /> <br />.. -----==--=~-=--~ <br /> <br />Status of Regression Equations for this sub-region: <br /> <br />Accepted <br /> <br />Regression Equation Data <br />Q=aAb <br /> <br />Where: <br />Q = Discharge (cfs) <br />A = Drainage Area (square miles) <br />a = coefficient = <br />b = coefficient = <br /> <br />707.9 <br />0.654 <br /> <br />Limited by: <br />Minimum Drainage Area = <br />Maximum Drainage Area = <br /> <br />2 square miles <br />1090 square miles <br /> <br />Discharge Calculations <br />Drainage <br />Area ID <br />SPL-1:1 <br />~- -----~--- <br />SPL-1:2 <br />SPL-1:3 <br />---------- <br />SPL-1:4 <br />SPL-1:5 <br />SPL-1:6 <br />SPL-1:7 <br />SPL-1:8 <br />SPL-1:9 <br /> <br />Drainage <br />Area (mi') <br />118.17 <br />271.19 <br />--------.-- <br />103.80 <br />3.03 <br />326.67 <br />607.76 <br />966.04 <br />43.86 <br />206.85 <br /> <br />100-year <br />Discharge (cfs) <br />16,047 <br />___ __._n______ <br />27,627 <br />--._------- -- <br />14,742 <br />1,462 <br />31,203 <br />46,831 <br />63,410 <br />8,392 <br />23.143 <br /> <br />Drainage Area Description <br />Lost CreeklWest Sand Creek at Adams/Weld Co. Line <br />------ - -- - - ------- - - - --------- <br />Kiowa Creek at Adams/Weld Co. Line <br />- ------ -----------~------------------ -.-----------. <br />Wolf Creek at confluence with Comanche Creek <br />siji:llICreek-tributary at confluence with BiTouc:reek -- -- <br />West Bijou Creek a~connuencewitll. Bij~li.. Creek---=_:--_- . <br />East Bijou. Cre~k_ at confluence with. Bijou Cre.Elk_~____ ____. <br />Bijou Creek at Adams/Morgan Co. Line <br />Little Muddy Creek at confluence with Muddy Creek <br />Muddy Creek at Adams/Morgan Co. Line <br /> <br />8110/00 <br />CWCB_Hydrolcrgy.xls <br />