Raw Data

The US Geological Survey has CT Water Data shown through an interactive map. It includes gauging stations and both real time and historic data

To learn about TMDL's and to see specific TMDL data for the Thames, click here.

Water Quality Plans and Watershed Management Plans

The Thames Science Plan outlines water-quality investigations that could provide information necessary for the CT-DEP to develop water-quality management and restoration strategies for nutrient-related problems in the Thames River Basin. The purpose of the Science Plan is to identify information that would support CT-DEP in developing Total Maximum Daily Load analyses (TMDLs) for nutrients for individual water bodies and stream reaches in the Thames Basin, and eventually for the entire basin, as required under the Federal Clean Water Act.

Regional and Adjoining States

For a regional comparison of impaired waters.

To get comprehensive recent (2002 and 2004) water quality data for the Thames as well as the rest of the state the DEP has an excellent resource page here.

To learn about Massachusetts' most recent Water Policy which affects the Upper Thames River Basin (French and Quinebaug watersheds). For a comprehensive contact list of officials who handle water quality issues in Massachusettes that affect the Thames please click here. This is a good resource to report spills.

Rhode Island DEM has a watershed partnership for the Quinebaug. You can visit their website here.

Septic Systems