Climate, Climatic Change, and Water Supply (1977) / Chapter Skim
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8. Impact on the Colorado River Basin and Southwest Water Supply
8. Impact on the Colorado River Basin and Southwest Water Supply
Pages 121-132
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From page 121... ...
Thus, we are confronted with an environmental impact of man on the river and an economic impact of the river on man. The water resources of the southwest United States are dominated by the Colorado River Basin.
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From page 122... ...
lo ~ ~; l ~ W !
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From page 123... ...
GEOGRAPHIC DESCRIPTION The 243,000-square-mile basin drainage involves areas in seven states and was arbitrarily divided by the Colorado River Compact at Lee Ferry, Arizona, into the Upper Colorado Basin and the Lower Colorado Basin for purposes of interstate administration. The Upper Basin drainage includes those areas of Arizona, Colorado, New Mexico, Wyoming, and Utah that drain into the Colorado River above Lee Ferry, Arizona.
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From page 124... ...
divides the surplus as Nevada, 4 percent; Arizona, 46 percent; and California, 50 percent. The Upper Basin states reached agreement on a formula for further dividing their apportionment under the Colorado River Compact when they executed the Upper Colorado River Basin Compact.
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From page 125... ...
(Colorado River Board of California, 1969.) TABLE 8.2 Estimates of Average Virgin Flow for the Upper Colorado River Basina Period Million Acre-Feet per Year 1896-1968 1906-1965 1914-1965 1922-1965 1931-1965 14.82 15.09 14.64 13.87 13.09 aWater Resources Council (1970)
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From page 126... ...
Fontenelle Fontenelle Blue Mesa Blue Mesa Morrow Point Morrow Point Flaming Gorge Flaming Gorge Navajo Lake Powell Total in Upper Basin Navajo Glen Canyon Downstream of Lee Ferry, Arizona (Lower Basin) Green River Gunnison River Gunnison River Green River San Juan River Colorado River 0.35 0.94 0.12 3.79 1.71 27.00b 33.91 0.34 0.83 0.12 3.75 1.70 25.00 31.74 Lake Mead Hoover Colorado River 28.54 26.16 Lake Mohave Davis Colorado River 1.82 1.81 Lake Havasu Parker Colorado River 0.65 0.62 Total in Lower Basin 31.01 28.59 TOTAL IN UPPER AND LOWER BASINS 64.92 60.33 Capacity above dead storage.
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From page 127... ...
Using these projections, there could be significant shortages occurring in all ~e Upper Basin states except Wyoming by the year 2000. The Colorado River Basin Salinity Control Forum 7 6 1 ASSUMED AVAI LARLF 6 5 MAF CONSFRVATIVE HYPOTHESIS 5.8 MAF ~D FOOD & F I BE R - ~/G=C=~= - ~ ~ EXPORTS ENERGY STORAGE PROJECT RESERVOIR EVAPORATION —M & 1, MINERALS, FISH-WILDLIFE, RECREATION, PUBLIC LANDS EXPORTS 1 980 YEAR 1qqn 2000 FIGURE 8.2 Upper Colorado River Basin water for energy 1974 to 2000.
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From page 128... ...
. However, the fossil-fi~el resources of the Lower Basin are nowhere near as great as they are in the Upper Basin; therefore, the stress for in situ power production is greater in the Upper Basin.
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From page 129... ...
The purpose of this moratorium was that the representatives from the Pacific Northwest wished to protect their water resources for local use and to provide a period during which the extent of local requirements could be accurately determined. Therefore, it is yet to be determined whether the importation of water from the Columbia River Basin is a viable alternative for the management of the Colorado River Basin.
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From page 130... ...
JOHN A DRACUP 1973 Assumption Base as to Rate Condition of Use 1980 1985 1990 Upper BasinC 2976 Low 3,426 3,686 4,111 Moderate 3,576 4,176 4,594 High 4,021 4,589 5,464 Lower Basins 6143 Low 5,813 6,238 7,461 Moderate 5,953 6,838 7,476 High 6,203 8,168 7,500 TOTAL 9119 Low 9,239 9,9~ 11,572 Moderate 9,529 11,014 12,070 High 10,224 12,757 12,964 aColorado River Basin Salinity Control Forum (1975)
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From page 131... ...
(1967~. Augmenting Upper Colorado River Basin water supply by weather modification, presented to ASCE, National Meeting on Water Resources Engineering, New York, Oct.
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From page 132... ...
(1976~. Weather modification in the Upper Colorado River Basin as a source of water for energy development, presented at the Conference on Water for Energy Development, Pacific Grove, Calif., Dec.
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