1. U.S. Water Resources Council Summary Report;The Nation's Water Resources, The Second National Water Assessment by the U.S. Water Resources Council,1978
2. U.S. Water Resources Council Summary Report;Nation's Water Resources, The Second National Water Assessment by the U.S. Water Resources Council,1978
3. New Mexico Environmental Improvement Agency 1976 Analysis (provided by Dr. H.G.Folster, N.M. State University, Las Cruces).