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WSP08901
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Last modified
1/26/2010 2:50:06 PM
Creation date
10/12/2006 3:20:44 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.101.09
Description
Glen Canyon Dam/Lake Powell
State
AZ
Basin
Colorado Mainstem
Date
10/13/1993
Author
USDOI-USFWS
Title
Draft Biological Opinion-Operation of Glen Canyon Dam as the Modified Low Fluctuating Flow Alternative of the Draft Envronmental Impact Statement Operation of Glen Canyon Dam
Water Supply Pro - Doc Type
Biological Opinion
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<br />..s <br /> <br />Low Flucluallng Flow Alternative <br />Minimum Release V_ (8.23 mat) <br /> <br /><<l <br /> <br />. <br /> <br />i 2D <br />~ . <br />- <br />- <br />J m <br />! 15' <br /> <br />III <br /> <br /> <br />. <br />Figure 2. Approximate monthly releases of preferred alternative showing <br />minimums (black), mean (line), range' (arrows), with the addition of <br />habitat maintenance flow in March or April (adapted from Preliminay <br />Draft BIS). <br /> <br />The MLFF also includes the following elements: <br /> <br />. Flood protection limiting the frequency of floods greater than 45,000 cfs to no more than <br />1 in 100 yeats(Tim Randle, Person'lel communication). <br />. An Adaptive Marulgement PrOgram including long-term monitoring and research. <br />. Further ~tudy of a Selective Withdrawal Structure (multi-level intake structure) (MLIS). <br />. Beach and habitat building flows - 'a contrOlled flood between 40,000 and 45,000 cfs. <br /> <br />Further description of the alternative is found in the Advanced Draft ElS. <br /> <br />13 October 1993 Draft biological opinion 2.21,!j3.P'167 <br /> <br />7 <br />
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