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WSP06519
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Last modified
1/26/2010 2:23:08 PM
Creation date
10/12/2006 1:41:37 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.101.09.B
Description
Glen Canyon Dam/Lake Powell
State
AZ
Basin
Colorado Mainstem
Date
3/8/1994
Title
CWCB Agenda Item #5a, March 8-9-1994-Board Meeting - Colorado River Issues - Glen Canyon DEIS
Water Supply Pro - Doc Type
Board Memo
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<br />Cooperating Agencies <br />BOR <br />BIA <br />NPS <br /> <br />USFWS Indian Tribes <br />WAPA <br />AZ FISH/GAME <br /> <br />Studies - <br /> <br />Water Supply\ Reservoir Operations <br />Sediment Transport <br />Endangered Fish <br />Vegetation <br />Hydropower <br />etc. <br /> <br />Draft EIS - out January 1994 <br />Public Information Sessions <br />Formal Hearings: LA, San Francisco, Phoenix, <br />Flagstaff, Salt Lake, Denver, DC <br />Comments Due April 11, 1994 <br /> <br />Alternatives -(HANDOUT) <br />Studied 9, to reduce adverse impacts and enhance ecosystem in Glen and Grand <br />Canyons <br />Eliminated: Reregulation dam below dam <br />Run of the River alternative <br />Common Elements of All Alternatives: <br />Adaptive Management <br />Monitoring and Protection of Cultural Resources <br />Flood Frequency Reduction Measures <br />Beach Building and Habitat Flows <br />New Population of Humpback Chub <br />Further study of Selective Withdrawals <br />Emergency Exception Criteria <br /> <br />Preferred Alternative <br />Modified Low Fluctuating Flow; substantially reduces daily fluctuations from historic <br />levels and includes habitat maintenance flows, <br /> <br />Issues of Concern <br />Compact Obligation delivery <br />Annual delivery (minimum objective release is 8.23 maf) <br />Monthly delivery (how will changes impact reservoir and power <br />operations), <br /> <br />Flood Frequency Reduction <br />- impacts storage space <br />- Reduce frequency of flooding <br />
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