National Water-Quality Assessment (NAWQA) Program

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Special studies on source-water and drinking-water quality
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General Information

Regional and National Monitoring and Assessments of Streams and Rivers

A major focus of the NAWQA Program in its second decade (2002-2012) is on regional- and national-scale assessments of status and trends in streams and rivers. NAWQA has identified eight large geographical regions (referred to as "major river basins") as the basis for its status and trends assessments.

More information on the network design and assessments (PDF)

Publications from Major River Basin Assessments

Characteristics of the NAWQA Surface-Water Status and Trends Network

Selected issues addressed by NAWQA’s status and trends assessments

 

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