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Last modified
1/26/2010 12:37:56 PM
Creation date
10/11/2006 11:16:28 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.140.20
Description
Colorado River Basin Organizations and Entities - Colorado River Basin States Forum - California
State
CA
Basin
Western Slope
Date
1/1/1975
Author
Myron B Holburt
Title
Appendix to Annual Report of the Colorado River Board of California for the Calendar Year 1974
Water Supply Pro - Doc Type
Annual Report
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<br /><'"- ~-- ,.. .- <br /> <br />l.'~h <br /> <br />';, <br /> <br />Delivery of Colorado River water to the City of Tijuana on an <br />emergency basis commenced in 1972 through facilities of t?e I'.Ietro- <br />politan Uater District, the San Diego County Hater AuthorJ.ty, and <br />lileiilber agencies of the Authority. The deliveries are iilade pur:;;ua1:t <br />to I.Iinute i~o. 240 of the International Boundary and "later COi.Jm~ss~on, <br />which provides for emergency deliveries for a teI'lil not to exceed five <br />years and 1'Ihich \'Iill be accounted as a portion of j.Iexico's Colorado <br />River water allotted by the Uater Treaty of 1944. Deliveries are <br />scheduled to reach a maximwn of 20,600 acre-feet a year. <br /> <br />Table 5 presents, for calendar year 1974, a swmnary of scheduled <br />orders of water froin the Colorado River belo\V Parker Dam, the quantity <br />not taken, and uhat happened to the rejected vlater by agencies. The <br />California agencies ordered but did not take 1.1 percent of their total <br />orders, and the Arizona agencies did not take 4.7 percent of their total <br />orders. This resulted in 143,428 acre-feet being ordered but not taken. <br />Of this ffinount, 4,246 acre-feet was charged to United States' users <br />not taking water ordered on the Ilaster Schedule and was delivered to <br />Mexico in excess of the requirements of the r,lexican Hater Treaty. An <br />additional 1,927 acre-feet is chargeable to operational control of the <br />River and in overdelivering a small amount each month to make sure <br />l-lexico received its total order. <br /> <br />Coordinated Operation of <br />Colorado River Reservoirs <br /> <br />The Bureau of Reclamation released its fourth annual report on <br />the operation of Colorado River reservoirs pursuant to Section 602 (b) <br />of P.L. 90-537. The report described the actual operation of the <br />reservoirs during \Vater year 1974 and the projected operation for water <br />year 1975. This report re;Jeats the findinf'S of thechree previous <br />annual reports that "the accumulation of '~02 (a) storage' is not the <br />criterion governing the release of water during the current year." <br />Based on that fipding, no determination was made of a numerical value <br />for 602 (a) storage, and 1975 \'/ater year releases from Lake PO<Jell <br />vlerp. set at about 8,736,000 acre-feet (assuming average c ondi ti ons ) <br />in order to equalize storage betHeen Lakes PovJell and I,lead, in accor- <br />dance with the operating criteria. <br /> <br />Power <br /> <br />". <br /> <br />The production of hydroelectric power in Colorado River Basin <br />power plants constitutes a vital resource to the Basin states, both <br />for the energy generated and for the povler revenues received. Tables <br />6, 7. and 3 shm" key aspects of hydroelectric power generation in 1974. <br /> <br />All reservoirs but Fontenelle Reservoir stayed above rated head <br />elevation throughout the water year. Fontenelle was lowered below <br />rated head to increase its capacity to capture the spring runoff, <br />thereby improving the downstream habitat for geese 0 For Lovler Basin <br />interests, operating year \Vater releases from Hoover Dam and electric <br /> <br />:1: <br /> <br />- 6 - <br />
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