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Last modified
1/26/2010 12:48:10 PM
Creation date
10/11/2006 11:29:33 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.101.08
Description
Glen Canyon Dam/Lake Powell
State
AZ
Basin
Colorado Mainstem
Date
3/24/1997
Author
USDOI - Bureau of Re
Title
The Operation of Glen Canyon Dam During Spring Runoff Periods - Within the Constraints of the 1968 Colorado River Basin Project Act and the 1992 Grand Canyon Protection Act (working draft)
Water Supply Pro - Doc Type
Report/Study
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<br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />9 <br /> <br />2, Gaining technical input from Adaptive Management representatives <br /> <br />Two types of input are possible regarding reservoir operations: scenario planning and real-time <br />operations. The AMWG should consider operations scenarios to understand the downstream <br />implications of Glen Canyon releases. Members of either the AMWG as a whole or the <br />technical work group should consider alternatives in a variety of situations. The GCMRC <br />should take the lead in organizing these scenarios. It will be imponant for these groups to <br />understand the constraints placed by other statutes such as the 1968 Act. Coordination with the <br />AOP work group will facilitate this understanding. . <br /> <br />During real-time operations, any comments on Glen Canyon Dam operations should be made <br />directly to Reclamation under the AOP process of responding to changing forecasts. Randall <br />Peterson (Upper Colorado Region, Reclamation) will be the point of contact for such comments. <br /> <br />3. Real-time information sharing <br /> <br />Some of the problems encountered during February 1997 were that stakeholders were not <br />adequately informed about (I) the potential releases that could occur with a high forecasted <br />runoff, (2) proposed powerplant release changes for monitoring purposes prior to increasing <br />powerplant releases, and (3) the impact of changing forecast conditions on prudent operations. <br />A ponion of each AMWG meeting SllOUld be devoted to information sharing of hydrologic <br />conditions. This should include consideration of extremes as well as the most probable <br />forecasted runoff. The group should be informed of expected release patterns, the reasoning <br />behind the releases, and potential risks associated with scheduled and alternative releases. <br /> <br />During real-time reservoir operations, significant changes in releases or forecasted inflow should <br />be immediately communicated to all interested stakeholders. While options for these <br />circumstances would preferably have been discussed beforehand, during flood control operations <br />decisions will continue to be made by Reclamation using its best judgment. To encourage the <br />prior discussion of these issues, the GCMRC should be involved in analyzing potential <br />operations scenarios which might affect the ecology of the canyon; recommendations could <br />result from that AMWG process. <br /> <br />In order to facilitate information transfer, an email/fax list will be developed by Reclamation to <br />broadcast updated operations data. The parties should determine their level of interest in <br />receiving this type of information. Reclamation's website is currently updated frequently with <br />the latest reservoir operations information and expectations (Website address: <br />www.uc.usbr.gov). <br /> <br />Reclamation Discussion Paper -- Working Draft -- 3/24/97 version <br />
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