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Show use of long- chain alcohols to increase the surface tension by forming a monomolecular film on the water surface. The first savings could be accomplished, for example, by diking and draining shallow arms of the water bodies similar to that proposed for Utah Lake by the Bonneville Unit plan. The main objection to this method would be the loss of fish and wildlife habitat. The use of the chemical hexadecanol has been tested on several water bodies, including Bear Lake and Hyrum Reservoir in northern Utah. This method has potential for saving water. Associated problems with this method include the cost of the chemical and application, and the monitoring of prevailing climatic conditions, particularly the occurrence of wind which has a bearing upon the effectiveness of the film. Phreatophyte control could possibly be used in several areas for water salvage. A discussion of salvage of water by phreatophyte control is presented in paragraph Hla( 6). ( d) Development of Utah's Remaining Colorado River Entitlement Under terms of the Colorado River Compact of 1972 and the Upper Colorado River Basin Compact of 19^+ 8, Utah is entitled to 23 percent of the Upper Basin States' allocation which amounts to about l. k million acre- feet annually. About 800,000 acre- feet of this water is presently being used as shown on Table B- 5, leaving approximately 600,000 acre- feet available for development. The proposed Bonneville Unit would deplete the latter supply by about 165,000 acre- feet. Other proposed units of the Central Utah Project could develop Utah's remaining share. The primary problems related to the development of this resource would be when, where, how, and for what purposes would it be developed. c. Groundwater Groundwater investigations have been conducted in nearly all areas of the State where major groundwater developments have taken place. Most of the investigations have been conducted by the U. S. Geological Survey in cooperation with the Utah State Division of Water Resources. However, the Bureau of Reclamation has made or is making additional studies in areas of concern where more detailed studies and refined estimates of potential development are needed. Most of the present development has occurred in the confined aquifer system. Because of the inability of the shallow unconfined aquifers to readily yield water to wells, further development would likely occur in the confined aquifers in spite of the large quantity of water stored in the shallow zone. The U. S. G. S. has made no distinction between the shallow unconfined aquifer and the confined aquifer 185 |
