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Last modified
1/26/2010 12:30:04 PM
Creation date
10/11/2006 10:17:07 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.106
Description
Animas-La Plata
State
CO
Basin
San Juan/Dolores
Water Division
7
Date
1/1/1990
Title
Correspondence regarding the Final Biological Opinion - 1991
Water Supply Pro - Doc Type
Biological Opinion
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<br />, <br /> <br />. <br /> <br />. <br /> <br />6 <br /> <br />recommendations are determined. tn order to provide for assurance by the <br />parties of continued "good faith" efforts toward development of a RIP, <br />Reclamation recommends that an agreement be signed by the appropriate parties <br />committing to the development of the RIP. At a minimum we believe the <br />agreement should be signed by the Service: Reclamation: the BIA, the States of <br />Colorado, New Mexico, and Utah; and the four Indian tribes of the <br />San Juan River Basin. The agreement should assure the protection of instream <br />flows, provide for Sharing of potential shortages of water. assure commitment <br />for mimicry of the natural hydrograph in perpetuity, and the commitment to <br />develop a RIP within 12 months. Reclamation maintains that with an executed <br />agreement, the Service could then issue the Final Biological Opinion which <br />would allow for the construction start of the agreed features of the ALP to <br />deplete 57,100 AF while pursuing the development of the RIP. <br /> <br />As a final issue prior to the preparation Of a Draft Biological Opinion, the <br />Service has requested that Reclamation consider whether conferencing is <br />necessary on the razorback sucker. This species was proposed as endangered <br />under the Endangered Species Act. Information collected during the survey <br />work conducted from 1987 to I989. suggests the razorback sucker is extremely <br />rare in the San Juan River proper. Only one razorback sucker was collected <br />from the river in 1988, and recruitment has not been documented in the river <br />or Lake Powell. This information is consistent with data collected on the <br />Green and Colorado Rivers which confirms the precarious status of the species <br />in the Upper Basin. <br /> <br />The cause of the species decline is unknown. However, the virtual absence of <br />recruitment in the Upper Basin suggests that both biological and physical <br />factors may be adversely affect'ing the survival of early 1 ife stages of the <br />razorback sucker. Investigations are currently underway on the Green and <br />Colorado Rivers to promote the recovery of the razorback sucker in the <br />Upper Basin. Part of these efforts include the capture and removal of <br />razorback sucker from the San Juan River and arm of Lake Powell for genetic <br />analyses and future development of a separate brood stock if necessary. This <br />recovery effort is being undertaken so stocking of razorback sucker of the <br />same genetic parentage can occur in the San Juan River, if these fish are <br />determined to be genetically unique. <br /> <br />Based on the above information, including the ongoing recovery activities <br />afforded the razorback sucker under the existing Upper Basin RIP, Reclamation <br />has determi~ed that any impacts of depleting 57,100 AF of water by the ALP <br />will be fully offset by implementation of the reasonable and prudent <br />alternative. Throughout the development of the alternative, the razorback <br />sucker was considered as an integral part of the native fish community. <br />Improvement of current flow conditions with the reoperation of Navajo Dam to <br />mimic the natural hydrograph is expected to benefit both the Colorado <br />squawfish and razorback sucker as well as the entire native fish community. <br />The research and future development of a long~term recovery implementation <br />program for the endangered fish will provide additional protection and <br />recovery measures for the razorback sucker. <br /> <br />Reclamation requests that the Service proceed with the issuance of a new draft <br />biological opinion on the Colorado squawfish and initiate a conference on the <br />razorback sucker for the ALP. We would like to meet the April 1, 1991, date <br /> <br />Cj' <br />
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