Our Watersheds

Salmon Falls Watershed

Great East Lake

Located on the border of Acton, ME, and Wakefield, NH, Great East Lake is a 1,707 acre lake which makes up the headwaters of the Salmon Falls River. Great East’s tributaries are Copp Brook and Scribner Brook, and the lake outflows to Horn Pond via a 25 ft deep man made canal. The watershed is currently 66% forested, but 52% of the watershed remains buildable. Great East Lake provides habitat for 21 species of fish as well as 14 species of bird including Common Loon, Wood Duck, Belted Kingfisher and Great Blue Heron. For more information, check out the Great East Lake Improvement Association’s website or Great East Lake Watershed brochure. 

For water quality reports, please check out the UNH Lakes Lay Monitoring Program’s website.


  • Watershed survey to identify potential pollution sources
  • Youth Conservation Corps erosion control projects and boat launch clean-ups
  • Septic tank survey to identify opportunities for system upgrades, and community outreach
  • Road repairs to correct chronic erosion issues on private roads contributing polluted runoff to the lake
  • Water quality and cyanobacteria monitoring
  • Coordination of Lake Host funding requests
  • Yearly presentations on lake issues to the GELIA Annual meeting
  • Hosting events and workshops of interest to lake associations and their members


Lake Area: 1,707 acres
Maximum Depth: 102 ft
Maximum Length:  5.5 mi
Maximum Width: 1.1 mi
Volume: 75,589,500m3 (~20 Billion Gallons)
Average Depth: 35 ft
Watershed Area: 15.53 sq mi
Shoreline: 18.7 mi
Average Transparency: 30.2 ft (9.2 meters)

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