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Show 1 Green River 2 Upper main stem 3 San J uan - Co Io r ado Areas where net change in ground-water levels, in feet, for the 5-year period ending December 31, 1965. were within the limits given below Ri se Less than 5 5-10 More than 10 Less than 5 to more than 50 (Inferred owing to filling of new reservoirs since 1961) Decl ine Less than 5 Inadequate data (Any changes are of local extent) The map was compiled from water-level data collected by the U.S. Geological Survey and cooperating State, local and other Federal agencies. The data shown are generalized in places, and more detailed data on water-level changes are obtainable from the district offices of the Water Resources Division, U.S. Geological Survey, in Tucson, Ariz,; Denver, Colo.; Albuquerque, N. Mex.; Salt Lake City, Utah; and Cheyenne, Wyo. Net change in ground-water levels, 1961-65 13' UPPER COLORADO REGION COMPREHENSIVE FRAMEWORK STUDY |