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National Aquatic Resource Surveys

Timeline of National Aquatic Resource Surveys Field Seasons

The National Aquatic Resource Surveys (NARS) have a general schedule with set field seasons. However, the release of any report may vary due to laboratory data return and data analysis.

Field Year Survey
2007 National Lakes Assessment
2008 - 2009 National Rivers & Streams Assessment
2010 National Coastal Condition Assessment
2011 National Wetland Condition Assessment
2012 National Lakes Assessment
2013 - 2014 National Rivers & Streams Assessment
2015 National Coastal Condition Assessment
2016 National Wetland Condition Assessment
2017 National Lakes Assessment
2018-2019 National Rivers & Streams Assessment
2020 National Coastal Condition Assessment
2021 National Wetland Condition Assessment