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<br />. <br /> <br />. <br /> <br />. <br /> <br />Lt. Colonel Dorothy F. Klasse <br /> <br />16 <br /> <br />(river mile 158.6) to 38.1 river miles above Lake Powell (Dale Ryden. USFWS. <br />pers. COIlUTI.) <br /> <br />Critical Habitat <br /> <br />Critical habitat has been designated within the 100-year floodplain of the <br />razorback sucker's historical range in the following section of the San Juan <br />River Basin (59 FR 13374). <br /> <br />New Mexi co San Juan County. and Utah San ,Juan County. The San Juan <br />River from the Hogback Diversion in T. 29 N.. R. 16 W.. section 9 to the <br />full pool elevation at the mouth of Neskahai Canyon on the San Juan arm <br />of Lake Powell in T. 41 S.. R. 11 E.. section 26. <br /> <br />ENVIRONMENTAL BASELINE <br /> <br />The environmental baseline includes the past and present impacts of all <br />Federal. State. and private actions and other human activities in the action <br />area; the anticipated impacts of all proposed Federal projects in the action <br />area that have already undergone formal section 7 consultation: and the impact <br />of State or private actions contemporaneous with the consultation process. <br /> <br />In formulating this opinion. the Service considered adverse and beneficial <br />effects likely to result from cumulative effects of future State and private <br />activities that are reasonably certain to occur within the Project area. along <br />with the direct and indirect effects of the Project and impacts from actions <br />that are part of the environmental baseline (50 CFR 402.02 and 402.14 (g) <br />(3)) . <br /> <br />The physical and biological features that were the basis for designating the <br />critical habitat for the endangered fishes are water. physical habitat. and <br />biological environment. These primary constituent elements were determined <br />necessary for survival and recovery of the endangered fishes in the San Juan <br />River. The primary constituent element water is described as a quantity of <br />sufficient quality and with a hydrologic regime that is required for each life <br />stage. Physical habitat includes areas of the river that are inhabited or <br />potentially habitable by endangered fishes for use in spawning. nursery. <br />feeding. and rearing or corridors between these areas. Biological environment <br />includes food supply. predation. and competition. <br /> <br />Water Ouantity <br /> <br />f/ <br />1/) <br />