As part of the U.S. Geological Survey National Water- Quality Assessment (NAWQA) Program, the Southwest Principal Aquifers (SWPA) study is building a better understanding of the factors that affect water quality in basin-fill aquifers in the Southwestern United States. The SWPA study area includes four principal aquifers of the United States: the Basin and Range basin-fill aquifers in California, Nevada, Utah, and Arizona; the Rio Grande aquifer system in New Mexico and Colorado; and the California Coastal Basin and Central Valley aquifer systems in California.
Author: U. S. Department of the Interior |
Publisher: Createspace Independent Publishing Platform |
Publication Date: Oct 09, 2014 |
Number of Pages: 100 pages |
Binding: Paperback or Softback |
ISBN-10: 1502525534 |
ISBN-13: 9781502525536 |