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HydroBase Data <br />The data for the 1950 to present period of record pertaining to Antero Reservoir include the <br />following: <br />End-of--Month Contents (see Figure 8) <br />• End-of--month contents missing for water years 1950 to 1974 and 1987. Denver Water <br />provided a complete set of end-of--month storage contents data for Antero Reservoir. <br />These data have been forwarded to the DWR database administrator for inclusion into <br />HydroBase, and are included in Figure 8. <br />• The historical record indicates periods of storage above the current capacity prior to the <br />hold order placed in 1958 followed by operations limited to about 15,878 ac-ft capacity <br />until dam rehabilitation efforts were completed in the mid-198Os. <br />Figure 8 <br />Antero Reservoir End-of--Month Storage Contents <br />24,000 <br />20,000 <br />w <br />~ 16,000 <br />0 <br />U <br />12,000 <br />0 <br />8,000 <br />w <br />0 <br />W 4,000 <br />O M ~O O~ N ~ W ~ ~ O M ~ ~ N ~ W ~ <br />~n ~n ~n ~n ~O ~O ~O l~ l~ l~ o0 00 00 0o O~ O~ O~ O O <br />ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti <br />Source: Denver Water <br />7) Eleven Mile Reservoir (Structure ID 2303965) <br />Eleven Mile Canyon Reservoir was completed in 1932 <br />and is located on the South Platte River directly <br />downstream of Spinney Mountain Reservoir (owned and <br />operated by the City of Aurora), roughly 25 miles <br />upstream of Cheesman Reservoir. It is Denver Water's <br />largest storage facility in the South Platte River basin, <br />with an active capacity of 97,779 ac-ft and has a drainage <br />area of approximately 880 square miles. Similar to <br />Antero Reservoir, Eleven Mile is used primarily for water <br /> <br />Eleven Mile Reservoir <br />Photo source: http://www.water.denver.co.gov/ <br />Denver Water Board Operating Memorandum 15 of 40 <br />