![]()
U.S. Geological Survey
National Water-Quality Assessment Program
USGS Internal Access Only
Investigators: Sue Thiros, David Anning, Jena Green, Laura Bexfield, Michael Rosen, Scott Anderholm, Jim Leenhouts
Objectives:
Back to the Basin and Range Alluvial and Carbonate-rock Aquifers Status and Trends page.
Back to the Southwest Principal Aquifers (SWPA) Regional Assessment page.