C153773 Feasibility Study - Laserfiche WebLink

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I I I I I I I I I I I I I I I I I I I and the amount of storage water use all divided by the total amount of water diverted at Morrison's intake. When these shares are used for storage there is a provision in these decrees to store the sewage effluent attributable to the shares or the 100 inches of the Lewis and Strouse in the Bear Creek Reservoir to accommodate subsequent winter return flow obligations. The decree will now have to be amended to store this water in the Soda Lakes Reservoir, which requires an exchange from the sewage plant to the Harriman Ditch headgate. Water Yields In 1985, McLaughlin Water Engineers, Ltd. developed a computer model for the Town of Morrison for the purpose of determining the yields of the Bear Creek water rights, including Morrison's water rights. The various assumptions made for the model have changed slightly, but not enough to invalidate the yields of Bear Creek to Morrison's water rights. It should be noted that the recent Denver change cases would result in slightly different yields than produced by the 1985 water rights model. As a result of the decrees expected to be obtained by Denver, the Hodgson Ditch water rights will yield more during dry periods and the Warrior Ditch water rights will yield less. The availability of water in Bear Creek is truly a feast or famine. During an average type of hydrologic year, approximately 50 acre-feet of storage, in addition to diversions in priority, would be necessary to serve a population of 3,000 to 4,000 people. However, to survive a very dry year, over 300 acre-feet of water would need to be released from storage to meet the water demands of that population. The 1954-1956 period represents one of the worst dry cycles experienced on Bear Creek, probably the worst in this century. The year 1954 was a particularly dry year and most of any new storage would be required to prevent shortages for such an event. A reservoir operation study was made for the purpose of determining how many people or equivalent residential units (EQR) can be served by the Morrison municipal water system during a drought period. Reservoir Operation Model A new computer model was created by MWE, Ltd. for this Master Plan to analyze different development scenarios under strict administration of Morrison's water rights on Bear Creek. The model is an eight-year water balance, spanning a three-year drought cycle, which was developed to provide answers as to the ultimate service capacity and system capacity of the Morrison water facilities incorporated with the Cooley storage reservoir. The period 1950 - 1957 was selected, 70-0BO.035:Msrn.PLN II-5