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<br /> <br />...., <br />I <br />..I <br />1 C') <br />c:.) <br />C-) <br /> en <br />l Ul <br />00 <br />~1 <br />I <br />-j <br />-I <br />,I <br />'J <br />j <br /> <br />'c;~ <br />,-.~ <br />,.:f <br />, <br /> <br />i <br /> <br />.. ~ <br />/ <br /> <br />-- <br /> <br />,""'\ <br />) <br /> <br />3.0 WATER RESOURCES <br /> <br />Hydrologic analyses were conducted to estimate the yield from each reservoir site and to <br /> <br /> <br />estimate the capability of the proposed reservoirs to meet the requirements of a Joint-Use Reservoir <br /> <br />or to function as Replacement Reservoirs for the Green Mountain Exchange Project. Legal and <br /> <br /> <br />operational considerations Involved hydrologic characteristics, administration of the Upper Colorado <br /> <br />River Basin and projected water resources utilization. Specific hydrologic analyses were made of <br /> <br /> <br />the following: <br /> <br />o A water rights analysis provided estimates of flows that are legally available for <br /> <br /> <br />storage at the six proposed sites based on the monthly flows for the 1951 to 1983 <br /> <br /> <br />hydrologic study period. The analysis was performed for existing conditions and <br /> <br />moderate and high levels of future development of conditional water rights (see <br /> <br />Section 3.3). <br /> <br />o Reservoir operation analyses were performed to estimate the firm annual yield of <br /> <br />each reservoir site. In consultation with the Authority, the firm annual yield was <br /> <br />defined as the volume of water that can be provided every year without any shortage. <br /> <br />o The Green Mountain Reservoir was analyzed in detail to estimate its yield based on <br /> <br /> <br />the requirements of Senate Document No. 80, existing USSR operating policies .and <br /> <br />existing Coiorado River administration. <br /> <br />Operational analysis of the Upper Colorado River Basin with projected future water <br /> <br />demands provided an estimate of the increased yield of Dillon Reservoir due to <br /> <br />pumpback operation and provided estimates of the yieids of singie reservoirs and <br /> <br />combinations of reservoirs serving as Repiacement Reservoirs for Green Mountain <br /> <br />Reservoir. <br /> <br />3.1 <br /> <br /> <br />o <br /> <br />