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<br />[,r '," ,""..r;'\ <br />, ".,. <br />. ..-\\oI'.......~ <br /> <br />MANNER OF MAKING THE STUDIES <br /> <br />15 <br /> <br />Because of the number of separate saurces of water supply <br />and the resulting complexity of the system and its operation, the <br />studies were grauped for canvenience into studies of the several <br />majar raw water supply systems and the physical works existing <br />or planned ta process those supplies, The South Platte direct-flow <br />source, which must be utilized at the times and rates it becomes <br />available under Denver's rights, was assumed ta take the base of <br />the load or requirement of the system, The Moffat system, com- <br />prising water from the Fraser River and Williams Fork sources <br />was then assumed to take that portion of the system requirements <br />not satisfied by South Platte direct-flow rights, and a separate <br />series of studies was made to appraise the adequacy of existing <br />and proposed works embodied in that system, Finally, the require- <br />ment remaining after full utilization of the South Platte direct- <br />flow and Moffat Tunnel sources was imposed on the Blue River <br />source and that water made available from storage in South Platte <br />reservoirs under storage decrees on that river, Specifically, the <br />water sources utilized in supplying the estimated requirements <br />under each of the studies were assumed to be taken in the follow- <br />ing order: <br /> <br />1. Supplies from direct-flow sources available under the <br />direct-flow rights of the City from the South Plotte and <br />its tributaries, <br /> <br />2, Moffat Tunnel sources made available by operating the <br />Fraser River collection system, Jones Pass and Vasquez <br />tunnels, Moffat Tunnel, Gross Reservoir, Ralston Creek <br />Reservoir, and the Moffat Filter Plant. <br /> <br />3, Blue River water diverted through the Harold D, Roberts <br />Tunnel and used either directly or exchanged to the <br />South Platte for water for storage in Cheesman Reser- <br />voir or Eleven Mile Reservoir. <br /> <br />4, Blue River water released from storage In Dillon Reser- <br />voir. <br /> <br />5, Final remaining requirements, if any, from releases from <br />South Platte reservoirs, which included water stored both <br />under South Platte water rights and water exchanged to <br />South Platte reservoirs from Blue River sources, <br />