Lower Colorado Region Comprehensive Framework Study: Main Report 1971

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be readily available when subsequent mining operations are developed in an orderly manner with due consideration to environmental factors. ELECTRIC POWER There are a significant number of potential conventional and pumped storage hydroelectric power generation sites in the Region which have been studied in varying degrees. These sites on the mainstream of the Colorado River between Hoover and Glen Canyon Dams, though opposed by the conservationists, are still potential sites. The locations of these and other potential hydroelectric resources sites are shown on the following map, "Potential Hydroelectric Resources," GEOTHERMAL RESOURCES Although the Lower Colorado Region has several dozen springs classified as "thermal," none have exceptionally high temperatures. Very deep alluvial basins with high contents of thermal water suffici- ent to be of economic interest may possibly occur in the Region; however, if such do occur, they have not obvious surface expression and have remained undiscovered by drilling. In general, the geothermal potential of the Region is presently unknown. 66