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<br />-! <br /> <br />.';"......-:-~~- .~.,~~ .~~'F. <br /> <br />4. Recognize the importance of riparian vegetation to the <br />protection of the willow flycatcher, peregrine falcon, and <br />the bald eagle as well as other wildlife by providing cover <br />and food. The needs of wildlife should guide the vegetation <br />protection efforts. <br /> <br />OPERATIONAL CHANGES - NON-STRUCTURAL <br /> <br />Minimize Fluctuating Flows Alternative <br /> <br />1. Reduce the range of fluctuations in flows and the ramping, <br />seasonal high flows to coincide with natural flood events. <br />The fishery is monitored closely and becomes the "red flag" <br />for changes in operations. <br /> <br />seasonally Adjusted/steady State Alternative <br /> <br />2. This element develops flow pattern that best responds to all <br />"impacts." It is close to base load and is resource driven. <br />To optimize the resource there are higher flows in the <br />spring and lower flows in the fall with minimum daily <br />fluctuations that are seasonally based. This alternative <br />does not allow for peaking power releases. <br /> <br />3. This concept would approximate historic flows. The group <br />discussed this concept at length. Participants decided <br />that, because of other dams and other alterations to stream <br />flows outside the study area, this concept was probably not <br />practical. <br /> <br />4. Mimic pre-dam releases to simulate "natural" flows. <br /> <br />5. High flood flows (731,500 cfs) on a 10-25 year cycle to <br />aggrade beaches, remove vegetation, increase nutrients, <br />change rapid configurations based on sufficient sediment in <br />the bed. <br /> <br />6. Timing of high flows to coincide with high sediment input <br />(silts, clays, etc.) to the system by tributary flash floods <br />or debris flows. <br /> <br />7. Conditions for rare and unusual circumstances, extreme <br />drought or flood years, toxic spills or accidents, dam <br />maintenance which would require low or high flows, emergency <br />power needs, etc. <br /> <br />8. Flexible management plan for month-by-month releases during <br />high-, medium-, low-water years on a "rational" plan for <br />critical resources: humpback chub, other native fishes, <br />trout, beaches, terrestrial vegetation, wildlife, <br />vegetation, fishing, and white-water recreation. <br /> <br />16 <br />