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National Aquatic Resource Surveys
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National Rivers and Streams Assessment

The National Rivers and Streams Assessment (NRSA) is a collaborative survey that provides information on the ecological condition of the nation’s rivers and streams and the key stressors that affect them, both on a national and an ecoregional scale. 


Quick Links
  • NRSA 2018-19 Data Dashboard

Basics of the NRSA

  • Background of the NRSA
  • Field and Lab Manuals
  • NRSA Field Methods Application

NRSA Results

  • 2018-2019 NRSA Results- coming soon
  • 2013-2014 NRSA Results
  • 2008-2009 NRSA Results
  • 2004 Wadeable Streams Assessment (WSA)

Explore the Data

  • Download Data
  • NRSA Fish Tissue Studies 
Artic Stream Assessment, NRSA 2013-14
  • National Aquatic Resource Surveys Home
  • Background
    • Indicators
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  • National Coastal Condition Assessment
  • National Lakes Assessment
  • National Rivers and Streams Assessment
  • National Wetland Condition Assessment
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Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 9, 2023
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