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WSP11116
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Last modified
1/26/2010 3:16:10 PM
Creation date
10/12/2006 4:44:01 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8056
Description
Drought Preparedness
State
CO
Basin
Statewide
Date
2/1/1976
Author
Dept of Water Resour
Title
Special Report on Dry Year Impacts in California
Water Supply Pro - Doc Type
Report/Study
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<br />Although similar demand exists again this year the State Water <br />Project probably will not be able to provide the additional <br />quantity that is desired. <br /> <br />Federal central Valley Project - The Central Valley Project <br />of the U. S. Bureau of Reclamation will be able to meet its <br />contractual water supply commitments the remainder of this <br />year regardless of whether precipitation continues below normal <br />or is normal for the remainder of the year. .The Bureau of <br />Reclamation is limiting commitments for supply of surplus (class <br />2 water) to not more than the quantities earlier agreed to. The <br />Central Valley project will also be able to meet its delivery <br />requirements next year even if this year continues below normal <br />and 1976-77 is a lower quartile year. <br /> <br />I <br />I <br /> <br />1 <br />I <br />1 <br />I <br /> <br />Operators of this project and the State Water Project are <br />carefully coordinating the operation of the two projects to insure <br />efficient use of water. This coordinated operation also provides <br />benefits to other water users in the areas affected by the projects. <br /> <br />Colorado River - Areas in Southern California irrigated with <br />water from the Colorado River are also fortunateg since storage <br />on the river is at 48 million acre-f,et (60 x 10 cubic metres), <br />only 1.5 million acre-feet (1.9 x 10 cubic metres) below the all- <br />time high. While runoff this year is expected to be a little <br />below normal, the good storage situation alleviates any concern in <br />California for supply from the Colorado river this year and also <br />for next year, even if it should be a dry year. <br /> <br />Local Projects - Most of the water projects supplied by <br />streams in the Sierra Nevada Mountains have expanded their <br />reservoir storage capacity since 1950 sufficiently to meet their <br />requirements in a dry period without serious shortages. <br /> <br />Some of the irrigation districts that obtain water <br />from streams in California's coast range are not so well off. <br />Although there are three reservoirs on Stony Creek, the amount <br />of water in storage is low and the service area in Glenn County <br />may have difficulty this year. It will almost certainly be <br />short of water next year if 1976-77 is also dry. Until this <br />year Yolo County had to depend on water stored in Clear Lake <br />and on ground water, which has resulted in a greatly variable <br />supply. Fortunately, its new Indian Valley Reservoir on the <br />north fork of Cache Creek was completed ~ast year and has <br />approximately 100,000 acre-feet (12 x 10 cubic metres) of water <br />in storage. However, the district may still have a problem this <br />year since continuation of the dry period would prevent it <br />obtaining water from Clear Lake. A second dry year following this <br />year would have a very serious impact on agriculture in Yolo County. <br /> <br />Ground Water Supplies - No problems are expected in areas <br />served by major ground water basins. Some areas in Lake County <br />near Clear Lake depend on shallow ground water basins for agri- <br />cultural water. These basins have received little recharge <br /> <br />-16- <br />
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