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WSPC07641
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Last modified
1/26/2010 12:11:59 PM
Creation date
10/9/2006 6:35:02 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.761.09.B
Description
Colorado River-Federal Agencies-US NPS-Black Canyon of the Gunnison National Monument
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
10/1/2000
Title
2nd Quantification Attempt-Black Canyon Information Paper
Water Supply Pro - Doc Type
Report/Study
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<br />. <br /> <br />. <br /> <br />BLACK CANYON INFORMATION PAPER <br /> <br />Oct, 2000 <br /> <br />the dams would provide river regulation, namdy, ' , , Blue Mesa Dam (Curecanti unit) . ., The <br />two additional dams would be built for power head only. One would be Ihe Crystal Dam <br />(Crystal unit) which would benefit from river regulation provided by the upstream Curecanti <br />Reservoir, <br /> <br />At page 110, tlie Crystal Unit is descnb.ed, as Crystal Reservoir with a capacity of 40,000 acre <br />feet and its purpose' to serve only to maintain "Power head and to regulate the hourly and di:lily , <br />releases from the Curecanti Reservoir.' <br /> <br />,.' <br /> <br />Wonnation on the Curecanti Unit is at page Ill, which in this earlier report, sized the reservoir <br />at 2,500,000acre-feet, ' <br /> <br />Flood-control storage requirementsare,me!rtiom:d'in the report at page 153, It states that <br />generally the lower reaches of the main tributary streams are confined in deep and barren canyons <br />so floods cause no damage, However, the report states that reduction of peak .flows of the <br />Gunnison River by the Curecanti unit would reduce flood damage in areas near Delta and Grand <br />Junction, Colorado, ' <br /> <br />Under the water rights category, the report at p, 155, states: Necessary water rights for the 'units <br />of the Colorado River storage project would be available to the United States, The use of water <br />and the operation of these various project units would be consistent with the Colorado River <br />compact, the Mexican Water Treaty, and the upper Colorado River Basin compact, ' <br /> <br />Water for the various participating irrigatiol! projects would be appropriated in accordance with <br />the law of the State in which the point of diversion of water for each such project is located <br /> <br />Statements and programs of cooperating federal agencies were also included in the report <br />beginning at page 178, The National Park Service'S statement begins at page 185: The Service <br />seeks to preserve and render available to the public outstanding scenic, scientific, historic, and <br />prehistoric areas of national importance, The Service recognized that several areas of the <br />national park and monument system would be directly affected by certain water-control <br />possibilities being considered by the Bureau of Reclamation. " At page 189: The adverse <br />effects certain reservoir units of the Colorado River storage project would have on areas of the <br />National Park System has been a matter of gravest concern to the Service.. , The Curecanti and <br />Crystal Reservoir units of the project would regulate river flows through the Black Canyon of the <br />Gunnison National Monument, While such river regulation involves changes in natural <br />conditions that are held to be very undesirable:, nevertheless it is recognized that the effects of . <br />flow regulation would not be sufficiently adve,'se to override the economic advantage to be <br />gained thereby in the public interest, <br /> <br />On page 208, the Service continues its comments on effects of the proposed project on the <br />National Monument stating: The interests of the National Park Service, however, will be <br />adversely qffected in the monument by regulation of river flows. Haw completely river <br />regulation can be achieved by the Curecanti Reservoir is not, as yet known but it seems quite <br />probably I~at it will reach a high degree and that only in comparatively rare years of excessive <br />B-5 <br /> <br />002711 <br />
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