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 regarding tools and data that have been developed from these related efforts.

Coastal Waters and the Great Lakes

• Taking the Estuary's Vital Signs with the Coastal Condition Assessment (Albemarle-Pamlico National Estuary Partnership)Exit

Lakes

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

Rivers and Streams

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

Wetlands

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