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Show could also be diverted directly to Salt Lake County by a low- level pipeline and pumping plants. Because of the quality of water directly from Willard Reservoir, either a separate system would have to be constructed for lawn and garden watering or some type of treatment plant would be needed. Either of these plans would cost more than the exchange plans. Assuming that Willard Reservoir water is not used as described above, the firm supply of 1+ 5,000 acre- feet annually could be taken to Salt Lake County. This would require amendment of the Weber Basin repayment contract. Development of Weber River water for municipal and industrial use in the Jordan River area would prevent further use of this water in the Weber River area. Future demand for lower quality water from Willard Bay Reservoir for use in the Weber Easin area is probable. A reduction in national defense activities in the area could reduce employment opportunities and cause a return to farming activities. Water in Willard Reservoir would then be needed for agriculture as originally intended. Industrial development requiring lower quality water is occurring around the Great Salt Lake and could create a demand for the yield of Willard Bay Reservoir in the future. There are two exchange alternatives to get this water to Salt Lake County. Both of these plans ( Figure H- 8) would involve using the existing Willard Canal and pumping plants, as described below. ( a) Description of the Alternative i « Low- Level Plan A new Slatervilie Pipeline and a pumping plant would be needed to pump the water from Willard Reservoir and Canal into the Davis- Weber Canal to replace the high quality Weber River water diverted to the Jordan River area. The Weber River water would be taken from the mouth of Weber Canyon through a new pipeline ( the Weber- Salt Lake Aqueduct) to Salt Lake County. Here it would be treated in a new treatment plant and conveyed to the tank farm near Kearns. Wanship Dam and Reservoir would be enlarged by 150,000 acre- feet to provide firm, long- term municipal and industrial water supplies. Utah County would not be able to obtain water through the facilities of this plan. The estimated annual cost for this water delivered to Salt Lake County would be about $ 138 per acre- foot, not including Bonneville Unit incurred costs. 536 |
