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WSP07931
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Last modified
1/26/2010 2:29:27 PM
Creation date
10/12/2006 2:40:40 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.766
Description
Gunnison River General Publications - Correspondence - Reports - Etc
State
CO
Basin
Yampa/White
Water Division
6
Date
4/23/1996
Author
Unknown
Title
Preliminary Aspinall Unit Accounting Issues - April 23 1996
Water Supply Pro - Doc Type
Report/Study
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<br />'-'J <br /> <br />,1 <br /> <br />:-,J" <br />,.. <br /> <br />, ,), <br />, , <br />'. ". <br /> <br />':>J~. 35" <br />11. ... " <br />V . ..... <br /> <br />. <br /> <br />. <br /> <br />Other contract releases and the potential to forgo storage or store out-of-priority; <br />Minimal flows for rafting and commercial outfitters in the Lower Gunnison <br />Gorge; <br />Administration of the 60,000 AF depletion allowance ifrequired <br />· (Selective call issues if limited to west slope, value of Aspinall rights if <br />administered as most junior to avoid selective call issues); <br />Any authorized purpose not identified. <br /> <br />The major question with the releases identified above is whether or not to keep tract of <br />them separately. Ifnot, which account should they be charged against? <br /> <br />Also, it is recognized that releases can serve multiple purposes, therefore, release <br />accounting needs to be done in a priority fashion so as to satisfy the most uses with the <br />least amount of water. A number of agencies expressed an inter~st in discussing the <br />priority of releases. We have taken the liberty of suggesting the following priority for <br />release accounting for discussion purposes only. The suggested priority for release <br />accounting discussions to start with is as follows: 1. releases to demands in priority <br />(downstream seniors and waters which must be passed); 2, project operational <br />releases(meet storage targets, flood control, minimum bypasses & power); 3, project <br />contract deliveries; 4, instream flow support; 5. augmentation & fill replacement. <br /> <br />4. <br /> <br />Operational Considerations and Coordination Needs <br />How do ~ deal with constraints imposed by the following for which specific releases are <br />not authorized: <br />potential out-of-priority storage to accommodate CDOW trout studies; <br />Ramping rates and the potential to forgo storage or store out-of-priority; <br />Changing inflow forecasts; <br />Morrow Point Tour Boat operations; <br />CRSP requires all releases to be made through the power plants if possible. <br /> <br />The operations matrix, attached hereto, should be consulted for the specific range of <br />values which different agencies have indicated as preferred, <br /> <br />5, Computational Time Period: It was suggested that the records be kept on an irrigation <br />year (Nov I to Oct 31) basis and done on a daily time step. <br /> <br />6. Questions <br />Who controls how unused water is released to meet target storage? <br />Can we effectively build off the Taylor Park Reservoir accounting to complete the <br />Aspinall Unit accounting? Appears that we probably could, <br /> <br />The NPS, Reclamation, Fish and Wildlife Service, and state of Colorado discussed this issue <br />paper at the April 18, 1996 Aspinall Unit Operations Meeting with the goal of identifying all the <br /> <br />3 <br />
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