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<br />" <br />, <br />,. .1 <br />, <br /> <br />. .-.1' <br />, ;:.1 <br /> <br />time ot the year strand fish. Fluctuations during the <br />summer months reduce habitat for larval native fishes. <br />Fluctuations in the winter months reduce the natural <br />reproduction of trout by exposing spawning beds and <br />denying access of reproducing adults to tributaries. <br />However, short periods of fluctuations at other times <br />may increase food availability and trout growth. <br /> <br />Beaches deposited during high, steady flows are rapidly <br />eroded when exposed to either fluctuating or steady <br />lower flows, but the rate of erosion diminishes and <br />equilibrium is reached after several years of similar <br />releases. The stable beach area that develops in <br />response to fluctuating flows is smaller than that <br />developed during steady flows of the same annual <br />volume, and could be substantially smaller depending <br />upon release patterns. <br /> <br />Mo41tie4 operations Cou14 Protect Or Enhance <br />Most ae.ources <br /> <br />The GeES found that changes in operation of the dam to <br />reduce fluctuations and avoid flood releases could <br />reduce the resource losses occurring under current <br />operations and, in some cases, even improve the status <br />of the resources. Five modified patterns of op- <br />erations were designed, each to address one or more <br />critical resources. These patterns have been con- <br />strained only by the need to release a minimum of 8.23 <br />million acre feet (mat) per year, maintain minimum <br />flows of 1,000 cts in winter and 3,000 cfs in summer, <br />and stay within the designated powerplant capacity of <br />31,500 cfs. These modifications only approximate ideal <br />release patterns tor individual downstream resources. <br />They illustrate the types of changes that would protect <br />or enhance resources, but do not represent the full <br />range of possible options. These modifications should <br />not be considered as fullv develoDed or recommended <br />ocerational schemes, <br />