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<br /> Proposed Action <br /> No Action <br />Resource Alternative <br /> Experimental Dam Releases Mechanical <br /> Removal - <br /> 8.000 cis 6,500-9.000 cfs 5,000-20,000 31.000- 42.000-45,000 <br /> steady flow fluctuating flow cfs fluctuating 33,000 cis cfs high flow <br /> flow high flow <br /> -- --- --- <br /> which were hydropower flexibility than short-term emissions as a <br /> predicted to generation No Action. with releases near resuttol <br /> result in compared to possible slight powerplant compensating <br /> overall slight No Action, with decrease in capacity lor short-term <br /> regional potential slight emissions bypass flows <br /> emissions increase in <br /> reduction emissions <br />Aquatic Phytobenthic Reduced Increased Increased drift Temporary Reduction in No effect <br />Species: community turbidity; turbidity; rates; reduced reduction in benthos <br />Plants sustained; increased light reduced total total welled benthic species; <br /> abundance penetration; welled area; area; benthic organisms; increased drift; <br /> dependent on increased decreased production increased primary <br /> flow, primary and benthic primary limited to 5,000 drift; rapid producers <br /> sediment. secondary and secondary cis stage; same recovery expected to <br /> light; highest production; growth (Iimiled as No Action rapidly recover; <br /> densities in reduced to 6,500-cls improved <br /> summer; nearshore stage); drift production <br /> Gammarus desiccation; may be more lollowing <br /> continues reduced drtft variable but not removal 01 <br /> decreasing compared to significant detritus <br /> trend; aquatic mildly compared to <br /> snails fluctuating 8,000 cfs <br /> continue to flows <br /> increase <br />Aquatic Increasing May promote Similar to No Dewater trout Effects May disrupt Decreased <br />Species: trout increased Action; possible redds and similar to 42- ongoing population <br />Trout population brown and reduced disturb near- 45,000 cfs spawning but density and <br /> numbers and rainbow trout loraging shore habitat of except lor improve mean size, <br /> negative reproduction in efficiency young trout; timing; spawning and <br /> effects on mainstream greater lateral temporarily habitat; increased <br /> native fish movement and displace displace small- mortality 01 <br /> downstream small-bodied bodied fish trout; <br /> displacement 01 fish improved <br /> small-bodied health and <br /> fish; increased condition <br /> turtliditv could lor <br /> <br />w <br />0 <br />() <br />::T <br />'" <br />'0 <br />CD <br />~ <br />w <br />0 <br />:l> <br />~ <br />(') <br />CD <br />c. <br />m <br />:J <br />< <br />~. <br />0 <br />:J <br />3 <br />CD <br />:J <br />~ <br />'" <br />:J <br />C. <br />m <br />:J <br />< <br />~3" <br />:J <br />3 <br />CD <br />:J <br />![ <br />() <br />0 <br />:J <br />en ..'- <br />CD ..'-- <br />.a <br />c <br />CD <br />:J <br />(') <br />CD <br />en <br />