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WSP12165
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Last modified
1/26/2010 3:20:05 PM
Creation date
10/12/2006 5:25:19 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.470
Description
Pacific Southwest Interagency Committee
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
8/1/1963
Author
PSIAC
Title
Pacific Southwest Water Plan - Report - August 1963
Water Supply Pro - Doc Type
Report/Study
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<br />002521 <br /> <br />y <br /> <br />The lop~-range water needs of the region can be met in one of <br />two primary ways, or a combination of the two: large-scale importa- <br />tion of water or desalting plants. Either wiIl be expensive. The <br />era of Iow-cost water is coming to an end in the Pacific Southwest. <br />Either or both of these methods must be accompanied by the most efficient <br />water management program, incIuding conservation, reuse, salvage, <br />quality improvement, and water exchanges. Lining or sealing of canals <br />can save seepage losses of as much as 500,000 acre-feet per year. <br />Channelization can save up to another 190,000 acre-feet of water that <br />now escapes the Colorado and its tributaries to spread uncontrolled, <br />evaporate, or feed useless vegetative growth. Eradication of phreato- <br />phytes--prolific water-using shrubs and trees--can save 100,000 acre- <br />feet or more. Urban return flows, estimated at 2,700,000 acre-feet <br />by the year 2000, can be drawn upon for various purposes through the <br />treatment of sewage water for reuse. Control of evaporation could <br />save a substantial part of the more than 1,000,000 acre-feet now lost <br />each year from surface waters of the region. Exchanges of water <br />couId allow areas of origin without water rights to obtain a supply. <br /> <br />There is room for differences of opinion with regard to those <br />elements which should be included in the initial phase of the program, <br />but for the long range it is not too early to begin a study of all <br />available alternatives in order that the best and most economical ones <br />can be selected at the appropriate time. The adoption of any final <br />plan will require a high degree of water statesmanship by the leaders <br />of the various States and their representatives in the Congress. <br /> <br />Due to promising technological developments, one of the alter- <br />natives which shouId receive particularly close anaIysis is the use <br />of very large desalinization pIants to produce fresh water from the <br />ocean. Over the long haul, it is entirely foreseeable that a smalI <br />portion of the total water needs of the region might be provided from <br />desalinization plants. <br /> <br />The studies presented in this report show conclusively that not <br />only is the physical solution available to provide for the principal <br />water needs of the Pacific Southwest as they now exist and as they <br />develop over the next 25 to 30 years, but that the projects and works <br />to be constructed are financially feasible, and that all reimbursable <br />costs can be repaid from a combination of revenues from the sale of <br />water and power at favorable rates. <br /> <br />While most of the region's future power needs will have to come <br />from thermal source~ remaining feasible hydrosites shouId be developed <br />for project pumping and should be especially valuabIe in future years <br />for peaking purposes. We propose that power from Marble Canyon and <br /> <br />3 <br />
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