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<br />Table 1, Basin Characteristics <br /> <br />Ora i nage <br />Area <br />Stream (square miles) <br /> <br />Forked Gulch 3.76 <br /> <br />E1 evation <br />at Origin <br />( feet) <br /> <br />7,800 <br /> <br />Elevation <br />at Mouth or <br />Study L imi ts <br />( feet) <br /> <br />5,320 <br /> <br />West Forked Gulch <br /> <br />7,800 <br /> <br />5,450 <br /> <br />2.61 <br /> <br />Southea st <br />Canon Drainage <br /> <br />7,000 <br /> <br />1.27 <br /> <br />5,300 <br /> <br />Sand Creek <br /> <br />7,800 <br /> <br />5,344 <br /> <br />12,8 <br /> <br />Northeast <br />Canon Drainage <br /> <br />6 <br /> <br />6,400 <br /> <br />5,282 <br /> <br />Arkansas River 3,117 <br /> <br />11 ,000 <br /> <br />5,343 <br /> <br />Remarks <br /> <br />Originates in Mountains <br />of San Isabel National <br />Forest southwest of <br />Canon City. <br /> <br />Originates in Mountains <br />of San Isabel National <br />Forest southwest of <br />Canon City. <br /> <br />Primarily follows <br />Atchinson Topeka & Santa <br />Fe Railroad, <br /> <br />Originates at Twin <br />Mountain northwest of <br />Canon City, Lower reach <br />fo 11 ows U. S, Hwy. 50. <br /> <br />Originates northeast of <br />Canon City, Lower reach <br />flows through heavy <br />residential area, <br /> <br />About 53,000 acres <br />diverted. Orginates in <br />mountains above <br />Leadville, Colorado, <br /> <br />Soils of the study area are generally alluvial stream deposits in the <br />lowlands while upland soils are residual soils which have been de- <br />rived from shale, 1 imestone or sandstone. These residual soil shave <br />been buried by alluvial deposits in certain areas. <br /> <br />2.3 Principal Flood Problems <br /> <br />Floods on the Arkansas River are of two general types. One type is <br />represented by "spring floods" which result from melting snow and can <br />often be augmented by rainfall runoff, The other type is represented <br />by "summer floods" which result entirely from rainfall. The spring <br />floods are characterized by comparatively moderate rates of flow of <br />long duration with large volumes of runoff. The sUlTlTler floods are <br />characterized by high peak rates of discharge with relatively smaller <br />volumes of runoff. <br /> <br />5 <br />