Laserfiche WebLink
<br />,~ <br /> <br />~~'o.'" L_r'=:. ~'~:-~-'-:'-'''' <br /> <br />5. steady flows year-round: (25,000 cfs during high-water and <br />12,000 during low-water years) - add to this three 2-week <br />periods of fluctuations to increase drift). <br /> <br />6. Steady flows of 10,000 cfs during Dec-Jan-Feb with 20,000- <br />30,000 cfs during the rest of the year during high-water <br />years and 10,000-15,000 cfs during low-water years. <br /> <br />7. Releases to mimic "natural" conditions: not considered are <br />colder temperatures, lack of sediment, differing water <br />quality and planktonic content. <br /> <br />8. Low flows from June to August (5,000 cfs) and steady flows <br />during other months (28,000 cfs during high-water years and <br />13,000 cfs during low-water years). <br /> <br />Fluctuating Flows <br /> <br />9. This concept would focus on stabilizing beaches while <br />permitting some peaking power generation. The concept would <br />contain the following flow elements: <br /> <br />* A base flow of 8,000 cfs to 21,000 cfs. <br /> <br />* A sediment spike of 47,000 cfs for 4-8 days to 2 weeks <br />with severe ramping rates at each end, during periods <br />of maximum sediment loading from tributary streams. <br /> <br />10. Maximum 31,500 cfs, minimum 3,000 cfs (Easter to Labor Day) <br />and 1,000 for balance of year. Load-follow power peaking to <br />full extent possible. <br /> <br />11. Increase power plant operation to its full potential (from <br />31,000 cfs to 33,200 cfs). <br /> <br />12. Flows involve very high release, 33,000 and very low <br />releases. In order to allow operations that maximize power <br />generation the "law of the river" would need to be adjusted <br />as would the power marketing criteria. This alternative <br />would also require the elimination of water delivery <br />constraints. <br /> <br />13. Maximum powerplants capacity in May and June (31,500 cfs) <br />and steady flows during other months (20,000 cfs) during <br />high-water year and 8,000 cfs during low-water year). <br /> <br />14. Increase the minimum flows to 5,000 cfs, or to 8,000 cfs. <br /> <br />15. Water should be released in a steady and constant flow of <br />12,000 cfs, or 15,000 cfs. <br /> <br />12 <br />