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<br />. <br /> <br />. <br /> <br />~. <br /> <br />report on the scope, methods, and results of the investigation would be <br /> <br />(:) completed by September 30, 1978 and submitted to the Arkansas River <br />r:. " <br /> <br />PROBLEM: The future administration of the Arkansas River during flood <br /> <br /> <br />t\) <br />~ Compact Administration in December 1978. Oral progress reports would be <br />..... <br />en presented periodically during the study. <br /> <br />conditions would be improved if guidelines were available from which <br /> <br />operational decisions could be readily made, During high-flow periods, <br /> <br />potential flood waters could be detained in Pueblo Reservoir to prevent <br /> <br />downstream flooding. The flood waters would later be released at a <br /> <br />reduced discharge rate. Guidelines developed from this study would be <br /> <br />used to better determine where flood waters would have been utilized <br /> <br />downstream had Pueblo Reservoir not been constructed. <br /> <br />OBJECTIVE: The objective is to develop routed flood hydrographs at <br /> <br />several downstream locations uttltzing historical peak~discharge records, <br /> <br />The hydrographs would be developed on the basis that flood waters were <br /> <br /> <br />not detained in Pueblo Reservoir, All major tributa~y inflows and <br /> <br /> <br />diversion outflows would be' accounted for between Pueblo Reservoir and <br /> <br />John Martin Reservoir during each historical peak~ischarge event, In <br /> <br />addition, travel times fOr each historical peak~ischarge event would be <br /> <br />to accomodate travel times and flood conditions'between Pueblo Reservoir <br /> <br /> <br />determined for several downstream locations, <br /> <br />APPROACH: An existing re~~rvoir release routing model would be modified <br /> <br />and John Martin Reservoir. Historical flood hydrographs would be used <br /> <br />to calibrate the existing routing model. The calibrated model would <br /> <br />-2- <br /> <br />C'V' <br />'( ~ I ) <br />V "',;U <br />. 'L:"' <"~ .. - <br />rllp, CC'v <br />. j".! <br /> <br />" <br />