National Aquatic Resource Surveys

The U.S. EPA’s Report on the Environment includes the National Aquatic Resource Surveys (NARS), a comprehensive statistical survey and assessment of the condition of the Nation’s lakes, rivers, wetlands, and coastal waters. GLEC has played a key role assisting EPA with the design and execution of each of the NARS assessments since the first survey for the National Lakes Assessment in 2007. For over ten years, GLEC contracting support for NARS support has included:

  • Field crew deployment to over 1,500 surface water sites in all conterminous U.S. ecoregions
  • Sampling for aquatic community, water quality, human health and associated ecological data
  • National logistics support and training of contractors, state field crews and trainers
  • Development of QAPPs, Field Manuals, and quality assurance documents
  • GIS applications for property research, site maps and survey tracking
  • Laboratory analysis of algae and algal toxins, periphyton, macroinvertebrate and fish taxonomy
  • Technical writing, editing, and graphic communications for official EPA publications
  • Design, assembly, and distribution of specialized field equipment base kits and sampling kits
  • Oversight of EPA contractor field and laboratory operations

Learn more...

National Lakes Assessment (NLA)
National Lakes Assessment (NLA)
National Rivers and Streams Assessment (NRSA)
National Rivers and Streams Assessment (NRSA)
National Coastal Condition Assessment (NCCA)
National Coastal Condition Assessment (NCCA)
National Wetland Condition Assessment (NWCA)
National Wetland Condition Assessment (NWCA)




Dennis McCauley

Senior Research Scientist
Phone: 231-941-2230


GLEC operates one of only a few U.S. laboratories accredited for whole sediment toxicity testing. GLEC also maintains NELAP accreditation for chlorophyll and nutrient chemistry testing.


GLEC's Columbus, OH laboratory is ADEQ accredited for Acute Toxicity and Chronic Toxicity testing.



Great Lakes Environmental Center

739 Hastings Street
Traverse City, MI   49686

Phone: (231) 941-2230
Fax: (231) 941-2240