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of the glacial moraine that created the lake. The outlet pipe from the reservoir is located 50 feet <br />down the access shaft built around the tunnel terminus but the total depth of the lake is unknown. <br />Capacity: <br />Total Storage: Unknown <br />Active Storage: 550 ac-ft <br />Dead Storage: Unknown <br />Maximum outlet release of 30 cfs through a 3-foot pipe embedded in bedrock and <br />concrete <br />Enlargement History: Lake Isabelle has not been enlarged. <br />Reservoir Storage Measurement: Storage levels in Lake Isabelle are not maintained. <br />Seepage: Seepage from Lake Isabelle is considered minimal. <br />Gold Lake (Structure ID 0504015) <br />Gold Lake is an off-channel reservoir located at about 8,700 feet elevation at the Gold Lake <br />Mountain Resort and Spa. The resort owns the lake but the water rights in the lake are owned by <br />the ditch company. The ditch is filled via a ditch that diverts off of James Creek. Releases are <br />made from Gold Lake down Spring Gulch, a tributary to Left Hand Creek. <br />An elevation-capacity curve for the lake was provided by the Left Hand Ditch Company. A <br />subset of points from the curve is provided in Table 4. <br />Table 4 <br />Gold Lake <br />Stage -Area -Capacity Curve <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />0 NA 0 <br />2 NA 47.02 <br />4 NA 96.71 <br />6 NA 149.07 <br />8 NA 204.10 <br />NA -not available <br />Source: Left Hand Ditch Compairy <br />Capacity: <br />Total Storage: 454 ac-ft <br />Active Storage: 454 ac-ft <br />Dead Storage: 0 ac-ft <br />Elev. Area Capacity <br />(ft) (Acres) (Ac-Ft) <br />10 NA 261.80 <br />12 NA 322.17 <br />14 NA 386.11 <br />16 34 545.04 <br />34 maximum surface acres <br />Left Hand Ditch Operating Memorandum.doc 10 of 17 January 5, 2005 <br />