Maine Drinking Water Program
- Covers ground water and gives location of roadside springs in the state of Maine.
- http://www.maine.gov/dhhs/eng/water/

New Wetlands Report
- University of Maine and other agencies are working to monitor and study wetlands. This not only provides a foundation for managing them, but fascinating discoveries in the process.
- http://www.umaine.edu/mainesci/Archives/BioSciences/davis.htm

Maine Sea Grant
- Seeks to promote marine science and education in the development, management and stewardship of marine and coastal resources.
- http://www.seagrant.umaine.edu/

Bear Pond Improvement Association
- Non-profit organization whose goals is to maintain the health of Bear Pond, for the benefit of all. Provides pictures, news, survey, links, fundraising, and membership information. Located in Turner and Hartford.
- http://www.bearpondme.org/

The Maine Rivers Site
- News, discussion, pictures, and resources for people who care about rivers in Maine.
- http://www.mainerivers.org/

Penobscot Bay Watch
- Provides news and information concerning the waterway; includes events, laws, fisheries, tides, aquaculture, pictures, and web cams.
- http://www.penbay.org/

Maine Lakes Conservancy Institute
- Environmental education organization dedicated to understanding, protecting, and sustaining the health and values of the state's lakes and the communities dependent upon them.
- http://www.mlci.org/

Gulf of Maine Summit
- Provides interactive map for the various districts of the Gulf of Maine.
- http://www.gulfofmainesummit.org/

Maine DEP Bureau of Land and Water Quality
- Provides information relative to coastal waters, lakes, groundwater, streams and rivers.
- http://www.state.me.us/dep/blwq/

Damariscotta River Association
- Dedicated to preserving and promoting the natural, cultural and historic heritage of the Damariscotta River, and its watershed.
- http://lincoln.midcoast.com/~dra/

Water Resources of Maine
- USGS website provides current hydrologic conditions, groundwater data, products, state agencies, and contact information.
- http://me.water.usgs.gov/

Maine Harbors
- Tide charts and related nautical information provided for southern coast, midcoast and downeast Maine. Weather and marine resource links for all mariners.
- http://www.maineharbors.com/