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WSP05417
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Last modified
1/26/2010 2:18:16 PM
Creation date
10/12/2006 1:01:02 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
3/1/2000
Author
BOR
Title
Navajo Dam EIS-Navajo Reservoir Operations EIS Update
Water Supply Pro - Doc Type
Publication
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<br />-Page 2- <br /> <br />Summer Low Flow Impacts <br /> <br />Water shortages during <br />the Test appeared to be <br />the result of inadequate <br />diversion facilities not <br />water supply. <br />Most water quality <br />parameters didn't <br /> <br />could have an adverse <br />effect on the trout <br />fishery, Wade fishing <br />appeared to increase, <br />and fewer people used <br />dory boats due to <br />exposed rocks, gravel, <br /> <br /> <br />exceed State standards. <br />However, long-term <br />flows of250 cfs during <br />the irrigation season <br />could result in <br />exceedance of some <br />State water quality <br />standards between <br />Navajo Dam and the <br />Animas River <br />confluence. <br />Fish habitat was <br />reduced. forcing fish to <br />use the deeper runs and <br />pools for resting and <br />cover; this could result <br />in future crowding and <br />possible stress of fish <br />over an extended time. <br />Long term low flows <br />could cause habitat <br />reduction and water <br />quality changes that <br /> <br />and sand bars. <br />Commercial rafting <br />trips in the Bluff area <br />continued even though <br />Navajo releases were <br />low, because the Animas <br />River contributed flows <br />to the San Juan River <br />which helped maintain <br />raftable flows. <br />Low flows at the <br />hydropower plant at <br />Navajo Dam created <br />slight erosion to turbine <br />blades and increased <br />noise associated with <br />operation of the plant. It <br />is anticipated that <br />further damage and <br />noise would occur with <br />long-term flows less <br />than 350 cfs, <br /> <br />{'_'_'_A.~..I:."'''''_ .-t~-.l:.' -------1 <br />:f The-braft Navajo' <br />1'1 <br />~ Reservoir i <br />~ Operations j <br />~ Environmental ! <br />- . <br />" S I <br />:< Impact tatement: <br />!< will be available ,1 <br />I I <br />P._ni.!.1)~P'!.!~~}_qQ?_... <br /> <br />EIS Time Line <br /> <br />October 1999 <br />Notice of Intent <br /> <br />November 1999 <br />Scoping meetings <br /> <br />Nov. 99.Feb. 2002 <br />Data Collection and <br />analysis; Draft EIS <br />preparation <br /> <br />Late Spring 2002 <br />Release draft EIS; 60 <br />day public comment <br />period begins and <br />public hearings <br /> <br />\\'ho to Contact <br />If you have questions, need additional <br />informatIOn. or want to be added to our <br />mailinglist,colltact: <br /> <br />Ken Beck <br />Phone: 970-385-6558 <br />Fu: 970-385-0539 <br />E-mail: kbeckfituc.lIsbr.e:o\ <br /> <br />Bureau ofRedamation <br />835 Ea~t Second A\"e.. Suite 300 <br />Dllc:mgo, CO 8J301 <br /> <br />Information is also available at <br />Reclamation.s web site at: <br />wv.,v.llc.usbr.l!:o\-" <br />
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