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National Aquatic Resource Surveys

National Lakes Assessment 2012 Results

EPA is releasing the results of the second National Lakes Assessment (NLA). The NLA 2012 reports on the condition of lakes and reservoirs in the conterminous United States.

Key Findings of the National Lakes Assessment 2012

High-level summary of important findings from the 2012 survey as well as information on key stressors.

Ecoregional Results of the National Lakes Assessment 2012

Information on the NLA indicators summarized for the nine ecological regions (ecoregions). 

National Results and Highlights of the National Lakes Assessment 2012

The National Lakes Assessment 2012 public and technical reports as well as related regional highlight studies.

Explore the interactive data dashboard for the National Lakes Assessment 2012

Interactive dashboards of the NLA assessment results and the option to download customized charts.