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Reports and Data - National Rivers and Streams Assessment 2013-2014

The National Rivers and Streams Assessment (NRSA) 2013-2014 report presents the results of the second evaluation of the biological, chemical, physical and recreational quality of rivers and streams in the United States.

Since the 2013-2014 report was published, the third assessment of perennial rivers and streams, NRSA 2018-19, was completed. View the most recent information here.

National Rivers and Streams Assessment 2013-2014 Report
National Rivers and Streams Assessment 2013-2014 Technical Support Document
Data from the National Aquatic Resource Surveys - download individual data files from NRSA and check for updated data
National Rivers and Streams Assessment 2013-14 Data Files (ZIP) (zip) - Download all data files used in developing the report (archived data)

Reports and Data - National Rivers and Streams Assessment 2013-2014

National Aquatic Resource Surveys