Studies Related to the National Aquatic Resource Surveys

EPA and our partners, as well as other organizations, occasionally conduct studies and projects related to the National Aquatic Resource Surveys (NARS). This page provides links to information that have been developed from these related efforts.

Coastal Waters and the Great Lakes

• Special Report for the Great Lakes: 2015 National Coastal Condition Assessment and 2014-2016 Connecting River System Pilot Assessment
• 2020 Design Enhancements to Great Lakes National Aquatic Resource Surveys

Lakes

• Lake-Catchment Dataset (LakeCat)
• Minnesota Pollution Control Agency National Lakes Assessment Project (NLAP)

Rivers and Streams

• Stream-Catchment Dataset (StreamCat)
• The Midwest Regional Stream Quality Assessment (MSQA)
  • High Nitrate Concentrations in Some Midwest United States Streams in 2013 after the 2012 Drought

Wetlands

• Report on the 2016 Pacific Northwest Wetland Condition Assessment 
• Intensification of the National Wetland Condition Assessment for Ohio: Final Report (Ohio EPA)(293 pp, 13.37 MB, About PDF)
• Minnesota Pollution Control Agency Wetland Quality Status and Trends Monitoring