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WSP09646
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Last modified
1/26/2010 2:54:58 PM
Creation date
10/12/2006 3:46:33 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.101.09A
Description
Glen Canyon Dam/Lake Powell
State
AZ
Basin
Colorado Mainstem
Date
1/1/1988
Author
BOR
Title
Glen Canyon Environmental Studies Final Report
Water Supply Pro - Doc Type
EIS
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />. <br />. <br />I <br />I <br /> <br />section VII: <br /> <br />Modified operations <br /> <br />. 63 <br /> <br />Releases For HUMPBACK CHUB Benefit <br />Most Resources But Could Reduce <br />Trout Growth And Beach Area . 64 <br /> <br />Releases For COMMON NATIVE FISH <br />Have Strong Negative Effects On <br />White-Water Boating . . . . . . . . 66 <br /> <br />Releases For TROUT Balance <br />Conflicting Requirements For <br />Reproduction And Growth <br /> <br />. 68 <br /> <br />Releases For BEACHES, TERRESTRIAL <br />VEGETATION, AND WILDLIFE Are <br />Mostly Favorable To Other Resources 70 <br /> <br />Releases For FISHING AND <br />WHITE-WATER RECREATION Are Mostly <br />Favorable To Other Resources . . . . 72 <br /> <br />Releases To Mimic "NATURAL" <br />CONDITIONS Have Strong Negative <br />Impacts On Several Resources. .. 74 <br /> <br />The Modified Release Patterns, <br />Except For The Releases To <br />Mimic Pre-Dam Flows, Are Generally <br />Beneficial To Downstream Resources . 76 <br /> <br />I <br /> <br />Impacts Of INCREASING POWERPLANT <br />CAPACITY From 31,500 cfs To 33,100 <br />cfs Cannot Be Fully Assessed Due <br />To Limited Information On How <br />Operations will Change . . 76 <br /> <br />I <br />I <br />I <br /> <br />Non-Operational Approaches May Also <br />Protect Or Enhance Downstream <br />Resources . . . . . . . . 79 <br /> <br />Section VIII: Conclusions And Management Options 83 <br /> <br />Conclusions <br /> <br />83 <br /> <br />Management Options <br /> <br />85 <br /> <br />I <br /> <br />I <br />I <br />
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