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WSP12511
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Entry Properties
Last modified
1/26/2010 4:16:23 PM
Creation date
7/24/2007 2:44:48 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.102.01.H
Description
Colorado River - Water Projects - Aspinall Storage Unit - General - Operation Studies
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
2/26/2003
Author
Unknown
Title
Proposed Operating Criteria - Colorado River Storage Project - Aspinall Unit - Multiple Drafts with staff comments - 02-26-03 and 03-25-03
Water Supply Pro - Doc Type
Report/Study
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<br />Crystal Dam & Reservoir <br />1. Storage: <br />a. Goal is to maintain normal operating levels consistent with <br />hydropower operations (i.e. maintain reservoir levels above minimum <br />power pool). <br />2. Releases: <br />a. Total Outlet Capacity is 4,000 cfs; 1,900 cfs of which can pass through <br />the turbines of the hydropower plant. <br />Shall be sufficient to maintain a 300 cfs minimum flow in the <br />Gunnison River from the Gunnison Tunnel Diversion through the <br />Black Canyon to the confluence with the North Fork of the Gunnison <br />River except under drought conditions. Such minimum flow will <br />satisfy the CWCB's instream flow decree. The 300 cfs flow will also <br />jointly satisfy both the NPS reserved water right baseflow and the <br />Upper Gunnison River contribution towards satisfaction ofthe U.S. <br />Fish & Wildlife Service base flow recommendation through critical <br />habitat on the Gunnison River. <br />1. Under Drought conditions, the 300 cfs flow may be reduced to <br />200 cfs in order to help maintain and recover storage in Blue <br />Mesa Reservoir. <br />Drought is defmed as anytime Blue Mesa live storage content <br />is less than 581,000 AF (elevation 7490 feet above MSL) ol!-' <br />January 1 and the runoff forecasts indicate that Blue Mesa <br />~ir will not be within 50,000 acre feet of full by July 31. <br />~ During drought conditions, arrangements may be made, and j <br />encouraged, to reduce the amount of water called for by V <br />downstream senior rights and Aspinall Unit water contracts. . <br />Shall be sufficient to meet the diversion demands of the Gunnison < Ip/~~ <br />Tunnel. ~ <br />d. Will be sufficient, when combined with inflows of the North Fork of <br />the Gunnison and Uncompahgre Rivers, to meet the diversion.~ <br />~~r emands of existing downstre~~}lter rights on the Gunnison River I <br />Q . mainstem, inc1u~ing Redlands'aiiQthe ~edl~ds Fish laddew.when,he V . ~fJ <br />o . rUmegulated Apnl-July runoff forecast IS projected to be 90% of vfl~\; ~ <br />!:-verage or more. vi J(}II . tI <br />0' ",r <br />+0 r P/~l fc-clJer lC> <br /> <br />U00401 <br /> <br />4. 60,000 AF Subordination Agreement of July 2000: <br />a. The water rights for Morrow Point Dam and Hydropower Plant <br />are subordinated to 50,000 AF of junior upstream depletions <br />(40,000 AF upstream of Blue Mesa an 10,000 AF between <br />Morrow Point and Blue Mesa). The Upper Gunnison Water <br />Conservancy District in cooperation with the Colorado River <br />Water Conservation District and the Colorado Division 4 <br />Water Engineer are responsible for providing this accounting to <br />the U.S. Bureau of Reclamation annually. <br /> <br />(bo <br /> <br /> <br />t V:-------- <br />) pI? f" <br />~. <br />\ <br /> <br />I #) ,;,..,v <br />t\e1(1t <br />JG~,.M ~ ,Jl"0 <br />IIW 4, .fo( p, <br />,It#tfll ~ ./ <br /> <br />e~ ~&-p~e- p~jrGLfh <br />bvz-d &>C.ree...;1 ( <br /> <br />/ <br /> <br /># <br />
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