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<br />~ <br /> <br />.,. <br /> <br />· DEPARTMENT OF THE ARM' <br />OMAHA DISTRICT CORPS OF ENGINEERS <br />6014 U.S. POST OFFICE AND COURTHOUSE <br />OMAHA. NEBRASKA 68102 <br /> <br /> <br />RE"LY TO <br />ATTENTION 01' <br /> <br />August 9, 1984 <br /> <br />W)lli@~~~~~ D 1 <br />\~\ AUG 1,1,1984 \IU <br />\l\' <br />d , ORJ\OO\'If\TER <br />vOL~D\""O~\ Bl).r..RD <br />CO;l!s!:.".n.. . <br /> <br />Planning Division <br /> <br />Mr. J. William McDonald, Director <br />Colorado Water Conservation Board <br />Department of Natural Resources <br />823 State Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br /> <br />Dear Mr. McDonald: <br /> <br />This is in response to your letter of July 16 to <br />Colonel Andrews concerning the amount of storage available for <br />water supply storage in, and the status of our study on the <br />operation of, the Denver Tri-Lakes system. <br /> <br />Excess storage has been identified in both Bear creek <br />and Chatfield reservoirs which is available for purposes other <br />than exclusive flood control. The amounts of this storage are <br />15,000 and 26,000 acre-feet, respectively. The hydrologie <br />analysis in which this exeess available storage was identified <br />was completed in September 1983. I have enclosed a copy of <br />that analysis for your information. The availability of this <br />storage has not changedj however, the status of probable use <br />is contingent upon the outcome of our operation study. <br /> <br />The objective of the operation study, as you are aware, <br />was to determine the merits of using this storage to refine <br />the flood control function of the dams by regulating <br />discharges during flood conditions to restrict flows at <br />Henderson and minimize flood and erosion problems. This study <br />is on schedule and will be completed by late September 1984. <br />Data and/or decisions concerning how much or how effective the <br />use of this storage is in meeting the targeted objective will <br />not be available until the study is completed. <br /> <br />Your office will be given an opportunity to review the <br />results of our studies upon completion. In making our <br />decision on the possible reallocation of the excess storage in <br />