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Last modified
7/14/2009 5:02:32 PM
Creation date
5/20/2009 3:24:48 PM
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UCREFRP
UCREFRP Catalog Number
8089
Author
U.S. Bureau of Reclamation.
Title
Final Environmental Assessment Gunnison River Activities, Passageway Around the Redlands Diversion Dam and Interim Agreement to Provide Water for Endangered Fish.
USFW Year
1995.
USFW - Doc Type
Grand Junction, Colorado.
Copyright Material
NO
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River Flows and Reservoir Contents <br />One comment was that water conservation should be addmssed as a feasible method of providing <br />the water needed for endangered species and other uses. Another indicated that better <br />forecasting could help save water in storage in a dry winter and thus reduce impacts of providing <br />flows later in the year. <br />Water conservation is a viable means of extending the current water supplies in the west to meet <br />increasing and competing water demands. Reclamation has a very active program in this area. <br />Reclamation is providing assistance to other interested agencies and organizations in studying <br />and implementing water conservation measures. The comment on water conservation mentioned <br />ideas such as canal lining to conserve water. Such activities can reduce the need for diversions <br />from a river (because a lined canal will not leak as much and less diversion will be needed to <br />get water to croplands); however, this does not really conserve water because the water that <br />leaked from the canal eventually moves underground to a river and supplements river, flows. <br />It is recognized that accurate forecasts (of runoff into reservoirs and rivers) are very important <br />as a means of not "wasting " water and can help in determining how much water should be <br />stored in a dry winter for release the next year. Forecasting has improved and will continue to <br />improve; however, it must be recognized that much of the precipitation that provides reservoir <br />inflow comes late in the winter (March and April) so forecasting is difficult and making decisions <br />on winter operations is always risky. <br />Water Rights and Water Uses <br />A large percentage of written and verbal comments stressed the concept that the water use <br />benefits associated with the historic operation of the Aspinall Unit be continued and protected <br />under the interim agreement. In addition, several people requested information on how the <br />proposals would affect Colorado's ability to store and use its Colorado River Compact <br />entitlement. Verbal and some written comments expressed a need to include historic <br />commitments made in association with the planning and construction of the Aspinall Unit. Also, <br />questions were asked on how water shortages would be shared. <br />One reviewer requested that the maximum amount of water dedicated to the fish should be <br />pointed out; and that the statement concerning 148,000 acre-feet dedicated to the fish be <br />clarified. One agency pointed out that following completion of a Biological Opinion on the <br />Aspinall Unit, perhaps the 148,000 acre-feet of water would not be considered. <br />More information on the effect on Blue Mesa Reservoir and related resources was requested. <br />One comment pointed out that hydrology analyses used by different agencies (such as Western <br />Area Power Administration and Reclamation) should be compatible. More detail on hydrologic <br />analyses--such as inflow, outflow, evaporation data--should be included to provide greater <br />understanding of the hydrology analysis in the EA. One reviewer felt that better streamflow <br />49
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