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WSP04963
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Last modified
1/26/2010 2:16:20 PM
Creation date
10/12/2006 12:46:14 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.105.I
Description
Colorado River-Water Projects-Navajo-Environmental Studies
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
4/1/2002
Author
BOR
Title
Navajo Dam EIS-Summer Low Flow Test Report-San Juan River New Mexico and Utah
Water Supply Pro - Doc Type
Report/Study
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />i i. How Reclamation Conducted the Test <br /> <br />Methods <br /> <br />Using input from the public, earlier studies, and agency <br />expertise, emphasis for the Test was placed on certain <br />resources: hydrology, water quality, diversion structures <br />and water rights. trout and aquatic habitat, recreation and <br />economics, and hydropower. <br /> <br />The 7-day Test period allowed for physical changes to be <br />observed and extrapolated to approximate long-term <br />conditions, A shorter length of time would not have <br />permitted the river to reach equilibrium after flow changes <br />occurred to conduct testing, and a somewhat lengthier <br />period could have resulted in significant impacts to affected <br />resources, <br /> <br />Termination guidelines were in place during the Test if <br />significant impacts were observed or if public health or <br />safety were compromised, <br /> <br />Potential limitations of the Test included its duration, the <br />unpredictability of river bank storage, sporadic localized <br />rainfall that augmented riverflows, mechanical equipment <br />limitations preventing the release of exactly 250 cfs, and <br />lower rates of water diversion than anticipated. These <br />issues will be addressed in the subsequent EIS, <br /> <br />Summer Low Flow Test Report - April 2002 <br /> <br />-5- <br />OD592 <br />
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