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The National Aquatic Resource Surveys (NARS)

Basic Description

The National Aquatic Resource Surveys (NARS) are statistical surveys designed to assess the status of and changes in quality of the nation’s coastal waters, lakes and reservoirs, rivers and streams, and wetlands. Using sample sites selected at random, these surveys provide a snapshot of the overall condition of the nation’s water.

Link to Data

Other Resources

More information about NARS: