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Platte R 12/31/1929 29219.0 CA3286 79,064 Refill <br /> TOTAL 79,064 <br />9 <br />ti <br />i <br />St <br />S South 3/21/1962 47481.40987 80CW406 7,700 <br />) <br />ron <br />pr <br />ngs <br />a <br />Reser <br />oir Platte 3/21/1962 50038.40987 87CW116 7,864 Refill <br />v River TOTAL 7,864 <br />10) Platte Canyon South 9/5/1902 19424 <br />0 CA0807 905 <br />Res Platte R . <br />11) Marston Res S Platte R 4/1/1911 22370.0 CA0807 19,794.7 <br /> &Bear Ck <br />13) Chatfield Res South 5/29/1975 45804.0 W7797 24,000.0 <br /> Platte R <br />Source: Denver Water and HydroBase (Version 20060618) <br />Notes: *Antero Reservoir fills under refill water right and exchanges since 1907 storage right is for irrigation. <br />Ground Water Rights <br />Denver Water owns ground water rights that withdraw water from the Denver Basin aquifer and <br />Cherry Creek Alluvium. Denver Water's well water rights are primarily used to supply a small <br />amount of parks, which amounts to much less than one percent of the Denver Water demand. <br />The well water rights are not included herein because of their limited use within the Denver <br />Water system. <br />Exchange Rights <br />Denver Water has a fairly significant and senior exchange water right that was adjudicated in <br />Civil Action 3635 and Case No. W-8783-77. The senior exchange decree allows Denver Water <br />to move water throughout its systems based on supply and demand conditions including the <br />native flow of the South Platte River basin. The points of replacement available to Denver Water <br />were decreed without specificity. The exchange-to points for the senior exchange are specifically <br />defined (see Table ll). Another major exchange decree, Civil Action 3286, allows Denver <br />Water to exchange water from the Colorado River into Antero Reservoir, Eleven Mile Reservoir, <br />and Cheesman Reservoir on the South Platte River. <br />Between 1972 and 1998, Denver Water exchanged an average of about 24,000 ac-ft/yr since it <br />started operating the exchanges in 1972, with a maximum exchange of about 63,500 ac-ft in <br />1991. Diversions of water at Strontia Springs Reservoir, Conduit No. 20, and Cheesman <br />Reservoir (including diversions into Cheesman of Roberts Tunnel deliveries by exchange) <br />account for well over 95 percent of the water exchanged by Denver Water. <br />Table ll lists the exchange water rights owned by Denver Water in the South Platte River basin. <br />Denver Water Board Operating Memorandum 32 of 40 <br />