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<br /> Proposed Action <br /> No Action <br />Resource Alternative <br /> Experimental Dam Releases Mechanical <br /> Removal <br /> 8,000 cfs 6.500-9,000 cfs 5.000-20.000 31,000- 42.000-45,000 <br /> steady flow fluctuating flow cfs fluctuating 33,000 cfs cfs high flow <br /> flow high flow <br /> -- <br /> cold water displacement of competition <br /> temperatures subadults and in long- <br /> adults term; also <br /> improves <br /> critical <br /> habitat <br />Endangered Continued Potential for Reduction in Reduced Potential Anticipated Little <br />Species: very rare; limited daily minimum flow downstream positive effect likelihood <br />Razorback littie to no improved fluctuations will limit food displacement on nearshore of negative <br />Sucker successful conditions in may allow base of young of rearing habitat; effect due <br /> reproduction nearshore increased productivity; year fish short-term to rarity <br /> or rearing habitats warming in greater daily from negative effect <br /> recruitment; rearing habitats fluctuations will nearshore on food base; <br /> negative increase drift of habitats Jul- limited <br /> effects from food base Oct, but very displacement of <br /> cold water. little evidence juvenile fish, if <br /> fluctuating for successful present; no <br /> flows, noo- reproduction displacement of <br /> native fish subadults and <br /> adults if any <br /> exist <br />Endangered Minor losses No effect No effect Minor losses Loss of up to Loss of up to No effect <br />Species: (<to%) of (<10%) of 17% of 17% of primary <br />Kanab primary primary habitat primary habitat if not <br />Ambersnail habitat and and KAS at habitat if not already <br /> KAS at daily daily fluctuating already removed by <br /> fluctuating flows if not removed by previous high <br /> flows of 17- previously previous high release <br /> 23,000 cfs impacted by release <br /> high release <br />Endangered Positive and No effect No effect No effect Short-term Short-term No effect <br />Species: negative effects effects through <br />Southwester habitat through reduction in <br />nWillow alteration reduction in marsh <br />Flvcatcher continues; marshes. veaetation, loss <br /> <br />W <br />N <br />0 <br />:T <br />OJ <br />-0 <br />CD <br />~ <br />w <br />0 <br />)> <br />~ <br />n <br />~ <br />CD <br />0- <br />m <br />:l <br />< <br />=;. <br />0 <br />:l <br />3 <br />CD <br />'"- <br />OJ <br />:l <br />0- <br />m <br />:l <br />< <br />=;. <br />0 <br />:l <br />3 <br />CD <br />:l <br />~ . - <br />0 <br />0 <br />:l <br />CIl <br />CD <br />.0 <br />C <br />CD <br />:l <br />n <br />CD <br />CIl <br />