National Rivers and Streams Assessment 2018-19 Results
The National Rivers and Streams Assessment 2018-2019 report presents information on the condition of perennial rivers and streams across the conterminous United States.
Key Findings
High-level summary of findings from the NRSA 2018-2019 report.
Report and Data
View the public report, technical support document, and data files.
Ecoregional Results
Information from the National Rivers and Streams Assessment for nine ecological regions.
NRSA Data Dashboard
Explore additional results and download customized charts with the NRSA dashboard.