Columbia subject headings:
Harvard subject headings:
Conservation of natural resources--West (U.S.)
United States. Bureau of Reclamation.
Water resources development--West (U.S.)
Water-supply--West (U.S.)
Princeton subject headings:
Conservation of natural resources--West (U.S.).
United States. Bureau of Reclamation
Water resources development--West (U.S.)
Water-supply--West (U.S.).