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FLOOD09590
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Last modified
1/26/2010 10:09:48 AM
Creation date
10/5/2006 4:28:51 AM
Metadata
Fields
Template:
Floodplain Documents
County
Arapahoe
Community
Aurora
Stream Name
Cherry Creek Lake
Basin
South Platte
Title
Hydrologic Improvement Assessment Cherry Creek Lake
Date
9/1/1993
Prepared For
State of Colorado
Prepared By
US Army Corps of Engineers
Floodplain - Doc Type
Project
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<br />Sandy or gravelly soils occupy the steep slopes. The high plains soils are <br /> <br />grayish-brown sandy loam to clay loam undE,rlain by sandy loams to clays. <br /> <br />Unconsolidated sand and gravel deposits of PlEdstocene age occur 1.n terraces <br /> <br />along the larger stream valleys, Thin alluvial deposits of recent age mantle the <br /> <br />lower terraces and valley bottoms, and thin eolian deposits of silt, clay, and <br /> <br />fine sand are widespread in the upper area. <br /> <br />The Cherry Creek basin is semiarid. Surnrners are warm and winters are mild <br /> <br /> <br />to cold. Temperatures range from about ,.10" F. to 100" F. The average annual <br /> <br />temperature is 48.1" F. Average annual basin precipitation is 16,3 inches, <br /> <br />Precipitation occurs primarily as rain and sometimes as cloudbursts during the <br /> <br />months of April through August, None of the maj or floods of record have occurred <br /> <br />as a result of snowmelt runoff. The length of the annual growing. season is <br /> <br />approximately 130 days. <br /> <br />Land use in the middle and upper basins upstream from Cherry Creek Lake is <br /> <br />primarily limited to cattle and wheat production. Vegetation is a combination <br /> <br /> <br />of cropland and midgrass prairie, with intermittent stands of ponderosa pine <br /> <br /> <br />forest and tallgrass prairie, Since World liar II, urban expansion into the <br /> <br /> <br />middle basin has progressed rapidly. Urban development: I primarily residential, <br /> <br />has reached the Cherry Creek Lake project area. <br /> <br />PROJECT DESCRIPTION <br /> <br />PROJECT LOCATION <br /> <br />The Cherry Creek Lake project is located in ArapahoE County on Cherry Creek <br /> <br /> <br />,~bout 11.4 miles above its confluence with the South Platte River in the heart <br /> <br /> <br />of the business district of Denver. The loc.at:ion of the proj ect is shown on <br /> <br /> <br />plate 1. The drainage basin for the project includes portions of El Paso, <br /> <br /> <br />Douglas, Elbert, Arapahoe, and Denver Counties, An aerial photograph of the <br /> <br /> <br />project is shown on plate 2, <br /> <br />7 <br />
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