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<br />u. S. BUREAU OF RECLALIATION REPORT (COIIT 'D) <br /> <br />FLOOD CONTROL (CONTID) <br /> <br />Flood <br /> <br />At Castlewood Site <br /> <br />In Denver <br /> <br />Magnitude <br /> <br />Volume (AP) <br /> <br />Crest (SF) <br /> <br />Crest (SF) Overflo <br /> <br />, <br />i " <br />~l' <br /> <br />(a) <br />(b) <br /> <br />lOO-year 8,000 36,000 <br />500-year 16,000 75,000 <br />lOOO-year 21,500 100,000 <br />Maximum 28,500 132,000 <br />Limiting Channel Capacity in Denver. <br />Assuming Sullivan Barrier to fUnction without <br /> <br />8,000 <br />10,000 <br />20,000 <br />35,000 <br /> <br />None <br />(a) None <br />10,000 <br />25,000 (b) <br /> <br />failure. <br /> <br />Such a maximum flood, if it occurred, would cause damages <br /> <br />of 03,200,000 to property in Denver adjacent to the floodwayand of <br /> <br />0400,000 to property above Denver and below Sullivan Barrier. This in- <br /> <br />dicates the high value of the protection to be afforded by Castlewood Dam <br /> <br />Which, if constructed, would prevent such doonages under the flood conditions <br /> <br />assumed. <br /> <br />With respect to the drainage area of 218 sq. mi. between <br /> <br />Castle1'lood site and Sullivan Barrier, for which no imrestigations were <br /> <br />made and no flood-control works were designed by the Bureau, the Report <br /> <br />states I <br /> <br />"While it is not subject to storms of the <br />frequency and intensity of the area above <br />Castlewood Dam, it nevertheless is capable <br />of producing maximum runoff essentially <br />the same but far less frequent as above <br />Castlewood Dam." <br /> <br />Explaining that the said intervening area between Castlewood <br /> <br />Dam and Sullivan Barrier was then under imrestigation by the U. S. Corps <br /> <br />of Engineers, and that t'1e Bureau had made no investigation of that area <br /> <br />or of flood benefits, the Report statesl <br /> <br />-19- <br />