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8/11/2009 11:32:57 AM
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8/10/2009 5:00:14 PM
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UCREFRP
UCREFRP Catalog Number
9367
Author
Colorado Water Workshop.
Title
Proceedings
USFW Year
1992.
USFW - Doc Type
Colorado Water Workshop July 22-24, 1992.
Copyright Material
NO
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of storage and affect the upper basin yield. We will be closely looking at <br />this in the coming years. <br />There are impacts to the Colorado River Compact. Unless the <br />recommendations coming for Glen Canyon Dam take the same direction as Flaming <br />Gorge, it is unlikely that the releases to the Lower Basin from Glen Canyon <br />will violate the current minimum release objective of 8.23 million acre-feet. <br />However, if the requirements to mimic natural conditions force the Upper Basin <br />reservoirs to evacuate significant storage levels either to eliminate spills <br />or to provide large spring releases each year, the resulting yield available <br />for depletion would decrease and directly affect the Upper Basin states. <br />There are potential impacts to the current Long Range Operating <br />Criteria. This applies to the managing of the balance of storage between the <br />upper and lower basins through the levels of Lakes Powell and Mead. Such a <br />balance is intended to direct the orderly supplying of surplus Upper Basin <br />water for Lower Basin use as well as sharing recreational and power benefits. <br />Remember, during prolonged drought periods the releases from Lake Powell are <br />limited to 8.23 million acre-feet. <br />Impacts could result if the required releases of water are greater than <br />the 8.23 million acre-feet in a drought year, or if the volumes vary from year <br />to year. If that happens, possible revision of both the Operating Criteria <br />and the law (P.L. 90-537) would have to be addressed. <br />Finally, the altered releases may create additional water for the Lower <br />Basin. The 1922 Compact says that the Upper Basin cannot withhold water that <br />the Lower Basin can put to domestic and agricultural use. Without the storage <br />balancing provision, water could be called directly out of Lake Powell. The <br />balancing of storage places a limit on this use by preserving Lake Powell <br />storage. Down to the limit of 602(a) storage level, draw downs at Mead must <br />be matched by draw downs at Powell. <br />That balance would be disrupted by requiring extra release for spring <br />peaks, resulting in higher Lake Mead storage and greater tendency for Lower <br />Basin use to exceed the levels specified in Arizona v. California. <br />Finally, since appropriate NEPA compliance is needed on any permanent <br />operational changes brought about through Section 7 consultation, we may run <br />into a piece-meal EIS problem. A strong case can be made by some that a <br />basin-wide EIS is then in order. Writing such an EIS may be a nearly <br />insurmountable job. <br />As if all of that isn't enough, we haven't yet considered the Glen <br />Canyon Dam Environmental Impact Statement. This week the Cooperating <br />Agencies, led by Reclamation, have been meeting in Phoenix to wrestle with the <br />Draft EIS. We will have that draft out for public review, comment, and <br />hearings next February. <br />At the present time, we are trying to determine how we will handle the <br />question of a preferred alternative. Consider all we have talked about <br />tonight concerning competing interests, then focus that on this EIS. The <br />8
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