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Gunnison_BasinReport_200407
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Last modified
9/26/2011 8:33:25 AM
Creation date
7/15/2008 8:55:15 AM
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Decision Support Systems
Title
Gunnison River Basin Information
Description
General information regarding surface water projects and operations within the Gunnison River basin.
Decision Support - Doc Type
Basin Report
Date
7/1/2004
DSS Category
Surface Water
DSS
Colorado River
Basin
Gunnison
Contract/PO #
C153933, C154062
Grant Type
Non-Reimbursable
Bill Number
SB92-87, HB93-1273, SB94-029, HB95-1155, SB96-153, HB97-008
Prepared By
Leonard Rice Engineering
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Releases that are made from the Taylor Park Reservoir shall be charged first against <br />the water stored under the UVWUA's water storage right, and shall be considered as <br />having been used pursuant to UVWUA's obligations and the Upper Gunnison <br />District's rights under the 1975 agreement. Such releases shall establish credits in <br />Blue Mesa Reservoir pursuant to the above-mentioned contracts. In the event that <br />such releases exceed the water stored under the UVWUA's water storage right in <br />Taylor Park Reservoir, the deficiency shall be charged against the water stored under <br />the Upper Gunnison District's water storage right under Case No. 86CW203. Any <br />water belonging to the Gunnison District that is in storage on October 31 shall, on <br />that date, become part of the UVWUA's water storage right according to paragraph 5 <br />of the April 16, 1990, contract. <br />• Water delivered to and diverted into the Gunnison Tunnel from the UVWUA's <br />storage supplies shall be first charged against the UVWUA's credit water in Blue <br />Mesa Reservoir. <br />When additional water supplies are needed by the Upper Gunnison District for <br />irrigation purposes, and when such water is available from Taylor Park Reservoir <br />under the water right in Case No. 86CW203, releases of such water shall be made. <br />These releases will be charged against the water stored under the Upper Gunnison <br />District water storage right, and shall be limited to not more than 19,200 acre-feet of <br />water in any one year. <br />• If, and when, the Division Engineer determines that it is necessary to charge <br />evaporation against the reservoirs in the Gunnison River Basin, the accounting <br />conditions shall be modified appropriately to accommodate evaporation. <br />2.4.6. Operation of the Taylor Park/Blue Mesa Exchange in the WRPM <br />The following describes the key assumptions used in the CRDSS water resouces planning <br />model to simulate the operations of Taylor Park Reservoir and the Aspinall Unit. <br />• Taylor Park Reservoir is simulated using two storage accounts: 1) UVWUA's senior <br />decree for 111,260 acre-feet, limited to the actual capacity of 106,230 acre-feet; and <br />2) the Upper Gunnison District's refill decree for up to 106,230 acre-feet. <br />• The UVWUA has the ability to meet the irrigation demand for the Uncompahgre <br />Project canals using its exchange credits in Blue Mesa in addition to the amount of <br />water in storage in Taylor Park Reservoir under the UVWUA's senior decree. This is <br />limited to the available capacity in the Gunnison Tunnel (1,135 cfs) after exercising <br />the tunnel's direct flow water right to its full extent. <br />• The maximum releases from Taylor Park Reservoir are limited to the values given in <br />paragraph 22 of Case No. 86CW203. The releases from Taylor Park Reservoir are <br />credited directly into the UVWUA's credit account in Blue Mesa Reservoir, and are <br />Gunnison River Basin Information 2-16 <br />
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