Lower Colorado Region Comprehensive Framework Study. Appendix XVIII. General Program and Alternatives.
LOWER COLORADO REGION STATE-FEDERAL INTERAGENCY GROUP
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The Lower Colorado Region includes most of Arizona, and parts of Nevada, New Mexico, and Utah comprising 4.8 percent of the contiguous United States. The Region is richly endowed with favorable climate, abundant land, mineral, and other resources and leads the Nation in population growth rate as well as in several other economic indices. The population is concentrated principally in central Arizona and the Las Vegas, Nevada areas. The remainder of the Region is sparsely settled and much is uninhabited. Author
- Hydrology, Limnology and Potamology