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National Lakes Assessment 2017 Results

The National Lakes Assessment reports on the condition of lakes and reservoirs in the conterminous United States. To view the most recent results, view the National Lakes Assessment 2022 Results.

Key Findings

High-level summary of findings from the 2017 survey.

Report and Data

View the public report, technical support document, and data files.

National Lakes Assessment 2017 Results

Key Findings

Report and Data

National Aquatic Resource Surveys