National Water-Quality Assessment (NAWQA) Project

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Dissolved Solids in Basin-Fill Aquifers and Streams in the Southwestern United States

Dissolved-Solids Study Area
(View larger map)

This report release marks the completion of a USGS regional assessment by the National Water-Quality Assessment (NAWQA) Program on salinity levels in streams and ground water in parts of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming. The report, with its detailed maps, graphs, and tables, provides a rich source of information and standard reference for water managers throughout the region for years to come.

This publication is available for download in PDF format.

Available companion products and supporting materials:

A full listing of NAWQA activities is available at:
For additional information on the salinity assessment, please contact:
Dave Anning
Phone: 928-556-7139

For printed copy, send written requests to:
USGS Information Services
Box 25286, Federal Center
Denver, CO 80225
Or fax request to: (303) 202-4693

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Page Last Modified: Tuesday, 04-Mar-2014 14:45:20 EST