Thompson Lake – Top 5% Cleanest in Maine
Thompson Lake is a true gem located in the heart of Southwestern Maine’s Lake’s Region in Oxford County.
Thompson Lake is a true gem located in the heart of Southwestern Maine’s Lake’s Region in Oxford County.

Spanning an impressive 4,429 acres, it is one of the largest lakes in the area and is a popular destination for locals and tourists alike. The lake’s pristine waters and stunning natural beauty have earned it a reputation as one of the best-kept secrets in the region. Thompson Lake is known for its exceptional water quality, ranking in the top 5% of the cleanest and clearest lakes in Maine. It boasts a clarity rating of 24 out of 410 lakes, with only a handful of lakes in Northern and Eastern Maine being clearer.
The lake’s pristine waters are a testament to the region’s commitment to preserving the natural beauty and ecological integrity of the area. The lake’s clear waters and stunning natural beauty make it an ideal destination for a wide range of outdoor recreational activities. The lake is home to a diverse range of fish species, including brook trout, landlocked salmon, smallmouth bass, and pickerel, making it a popular destination for fishing enthusiasts of all levels. The lake also offers ample opportunities for swimming, boating, and other water-based activities, with several public boat launches and swimming areas available for visitors to use. In addition to its recreational opportunities, Thompson Lake is surrounded by a range of natural habitats, including dense forests, wetlands, and meadows. The lake’s natural surroundings provide visitors with a unique opportunity to experience the region’s diverse wildlife up close, including beavers, otters, and a variety of bird species. Thompson Lake’s accessibility is another one of its standout features, making it an ideal destination for day trips or extended stays. The lake is surrounded by a range of quaint towns and villages, offering visitors a chance to experience the region’s unique culture and history.
The area is also home to several state parks and hiking trails, providing ample opportunities for visitors to explore the region’s natural beauty and ecological diversity. Overall, Thompson Lake in Oxford County, Maine, is a true natural wonder that offers visitors a range of recreational activities and opportunities to explore the region’s unique culture and history. Its clear waters, diverse fish population, and stunning natural beauty make it a must-visit destination for anyone seeking an escape into nature.
Based on data collection since 1977 from the Lakes Stewards of Maine, Thompson Lake ranks #44 out of 951 lakes in Maine that have regular seechi disk readings for water clarity.
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