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Capacity: <br />Total Storage: Approximately 43,344 ac-ft <br />Active Storage: 42,734 ac-ft <br />Dead Storage: 610 ac-ft <br />Elevation/Area/Capacity Data: Reservoir gage height, area, and cumulative capacity <br />Table 2 <br />information are shown in . <br />Table 2 <br />Standley Lake Reservoir Elevation – Area – Capacity <br />Gage Height Area Cumulative Capacity <br />(ft) (acres) (ac-ft) <br />20 82 566 <br />30 145 1,704 <br />40 236 3,706 <br />50 337 6,534 <br />60 512 10,642 <br />66 693 14,193 <br />68 742 15,627 <br />70 795 17,161 <br />72 830 18,781 <br />74 862 20,459 <br />76 895 22,213 <br />78 925 24,033 <br />80 970 25,926 <br />82 995 27,891 <br />84 1,022 29,907 <br />86 1,063 31,988 <br />88 1,088 34,149 <br />90 1,118 36,343 <br />92 1,149 38,610 <br />94 1,183 40,939 <br />96 1,220 43,344 <br />Source: City of Westminster <br />Reservoir Storage Measurement: <br />Storage levels in Standley Lake are measured using a staff <br />gage. <br />Reservoir Seepage: <br />Reservoir seepage accrues pre dominantly to Big Dry Creek. <br />HydroBase Data: <br />Historical end-of-month st orage records for Standley Lake in HydroBase are <br />available under Structure ID 0203903 with a few months of missing data for ID 0203903 <br />tabulated under ID 0703903. Missing storage contents data for 2003 and copies of <br />FRICO records for other years with part ial or complete missing data (1950, 1953, 1958, <br />Figure 5 <br />and 1965) were provided by the City of Thornton, and are included in . These <br />data have been forwarded to the DWR da tabase administrator for inclusion into <br />HydroBase. Other missing months of storag e contents data were filled via linear <br />interpolation (for periods of 1 or 2 c onsecutive missing months). Remaining missing <br />monthly contents data were filled based on a wet-, dry-, or average- year monthly pattern <br />gage. <br />12 of 24 <br />