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I I I I I I I I I I I I I I I I I I I water demands will already be satisfied by senior decrees, and water available under these junior decrees will be lost. Such a situation occurred in 1982. As of January 1,1982, the City of Louis- ville had a total of 125 acre-feet stored in Marshall Lake which included 95 acre- feet of carry-over storage from 1981 due to its share ownership in Marshall Lake and 30 acre-feet due to storage of the Cottonwood #2 priority as per the agreement with FRICD. Marshall Lake filled under its own storage decrees by July 1, 1982 which caused the 125 acre-feet stored by the City of Louisville to revert back to the ditch company. From the time that Marshall Lake was full until such time as releases were made about July 8, 1982, the City could have diverted and stored the rights of the Cottonwood #2 Ditch in Marshall Lake or other facilities, but this water was lost due to a lack of storage space. Had a storage facility been available at H~rper Lake or extra capacity available at Louisville Reservoir, the 125 acre-feet stored in Marshall Lake could have been released into one of the facilities for subsequent use, and water available during the time that Marshall Lake was full could have been stored in one of the facilities. Two operation studies were conducted in order to provide an example of the proposed utilization of a new water storage facility at Harper Lake. Monthly operation studies were conducted for the year 1985 assuming both average and wet year hydrological conditions. rt was assumed that the initial storage capacity was 250 acre-feet and that the total capacity at Harper Lake was 715 acre-feet. Results of the operation studies as shown in Appendix D indicate approximately 616 acre-feet per year could be stored during years of average or high runoff conditions. F. Water Quality The proposed storage facility at Harper Lake or Louisville' Reservoir would . -26-