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<br />A-20 <br /> <br /> <br />_ "i '1" ,"~ <br />:')U- &.1.....' <br /> <br />. <br /> <br />0.5 to 0.9 feet in the Twin Lakes water level depending on <br /> <br />whether the lake is full or empty. With Twin Lakes at its <br /> <br />average content level of 9,177.6 feet (Fil';ure 9, Area Capacity <br /> <br />Chart), this fluctuation will be 0.77 feet. Under the average <br /> <br />conditions with two units operating the daily fluctuation in <br /> <br />the forebay will be 11,26 feet. This will result in a daily <br /> <br />fluctuation of from 1.0 to 1.7 feet in the Twin Lakes water <br /> <br />line depending on whether the lake is full or empty. With Twin <br /> <br />Lakes at its average content level of 9,177,6 feet, this fluc- <br /> <br />tuation will be 1.53 feet. <br /> <br />. <br /> <br />Operation of the powerplant for the longer 8-hour period with <br /> <br />no canal water and Twin Lakes at its minimum water level will <br /> <br />result in a daily fluctuation of 1, 1 feet in Twin Lakes and <br /> <br />7.0 feet in the forebay with one unit operating. With two <br /> <br />uni ts operatinr, a daily fluctuation of 2.2 feet in Twin Lakes <br /> <br />and 14.9 feet in the forebay will occur. In case of a major <br /> <br />power failure the entire active capacity of the forebay could <br /> <br />be drained resulting in a fluctuation of abcut four feet in <br /> <br />Twin Lakes. This would occur only rarely. <br /> <br />6. Recreation <br /> <br />Public recreation facilities planned for the Twin Lakes area <br /> <br />. <br /> <br />will be constructed and administered by the Forest Service. <br /> <br />The proposed plan is shown in Figure 10. <br />