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<br />4149 <br /> <br />alternative was available to preclude the likelihood of jeopardy <br />to the endangered Colorado squawfish and the razorback sucker, <br /> <br />which had recently been proposed for listing. <br /> <br />As a result of this intense study process, on March 4, <br /> <br />1991, the Bureau sent FWS a letter which outlining a reasonable <br /> <br />and prudent alternative which was supported by the three teams. <br />The teams and the Bureau agreed that this alternative would miti- <br />gate all impacts of the proposed construction of ALP. <br /> <br />The basis of the alternative is: <br /> <br />(1) depletion of 57,100 acre-feet for ALP <br />instead of the full ALP depletion of <br />154,800 acre-feet of water. This depletion, <br />represents that portion of the ALP avail- <br />able from the construction of Ridges Basin <br />Dam and Reservoir, and Durango Pumping <br />Plant and inlet pipeline; <br /> <br />(2) the long-term reoperation of Navajo <br />Reservoir, a large Bureau reservoir on the <br />San Juan River in New Mexico, to mimic the <br />natural hydrograph of the San Juan River; <br /> <br />(3) seven years of research on the San Juan <br />River and its tributaries to determine the <br />needs of the endangered fish; <br /> <br />(4) the development of a recovery imple- <br />mentation plan which will provide for con- <br />servation of the threatened and endangered <br />fish species while providing for water <br />development in the San Juan Basin; and <br /> <br />(5) long-term protection of reservoir <br />releases from Navajo Dam for the benefit of <br />the threatened and endangered fish through- <br />out its habitat. <br /> <br />In response to this alternative, on March 21, 1991, the FWS <br /> <br />-15- <br />