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Long Lake

  • Midas: 5780
  • Lake Surface: 4,935 acres
  • Watershed: 33,871 acres
  • Max. Depth: 59 feet
  • Elevation: 267 feet
  • Towns: Bridgton, Naples and Harrison

Long Lake has a few public boat launches allowing access to locals and visitors.

Long Lake is the second largest water body in southern Maine and is part of the Presumpscot River drainage. It connects to Brandy Pond and Sebago Lake, making it popular with water-skiers and boaters. Activities on the Causeway in Naples include trips on the Songo River Queen paddleboat, seaplane rides, windsurfing and para-sailing.


Long Lake supports a high quality black bass fishery and is one of the more popular lakes in southern Maine for bass angling tournaments. Other principal fisheries are landlocked Atlantic salmon, brown trout, chain pickerel, and white perch. Twelve other species also are present, including American eel, golden and common shiner, fallfish, white sucker, brown bullhead, burbot, lake and brook trout, pumpkinseed sunfish, yellow perch, and rainbow smelt. Each fall the lake is stocked with landlocked salmon and brown trout from the state hatcheries.

Long Lake Project

This project aimed to significantly reduce erosion, sediment and phosphorus export into Long Lake. The grant began in the spring of 2006 and conservation practices that reduce erosion and polluted runoff were installed at over 27 sites throughout the watershed. Roads, beaches and residential properties were worked on during the project. A Youth Conservation Corp (YCC) was also formed which installed best management practices on numerous residential properties.

Long Lake TMDL Report

A TMDL is a detailed watershed report with land use information and phosphorus loading estimates for a specific lake. The acronym TMDL stands for “Total Maximum Daily Load” and for Maine lakes it is used as a tool to assess and reduce phosphorus loading from within the entire watershed. Working with the Maine Association of Conservation Districts and Maine Department of Environmental Protection, LEA helped compile, organize and write a TMDL for Long Lake. The non-regulatory reports are intended to serve as a platform for future implementation work and watershed planning. It can also be used to compliment comprehensive planning updates. In addition to the land use inventory and phosphorus loading estimates, the reports contain water quality, fishery and soils information, a shoreline survey and recommendations for future best management practices in the watershed. Fine the TMDL report for Long Lake here.

Long Lake Watershed Soils

11 percent of soils in the watershed are type A soils. Type A soils tend to be well drained sands, loams, and gravels. When vegetation is removed and the soil is exposed they can be susceptible to erosion. Because they are often coarse with ample pore space, there is low runoff potential and water will not usually pool on them. These soils can be good places to site leach fields or infiltrate stormwater from a home or residence.

2 percent of soils in the watershed are type B soils. B soils have moderate infiltration rates and fine to moderate texture and soil size. They are usually made up silts and loams. Although not as well drained as A soils, they can also be good places to site leach fields and infiltrate stormwater.

58 percent of soils in the watershed are type C soils. C soils have low infiltration rates and typically have a layer that impedes the movement of water. These soils are made of sands, clays, and loams and are one of the most common soil types in western Maine.

3 percent of soils in the watershed are type D soils. D soils have a high runoff potential and very low infiltration rates. Soils with a high water table, clay or other impervious layer near the surface are typically D soils. These soils are often associated with wetlands.

2 percent of soils in the watershed are type C/D soils. C/D soils are a mix of these two soil types. They have fairly high runoff potential and low infiltration rates and often pool water.

The remaining 23 percent of the watershed is taken up by the lake.

LEA’s Efforts on Long Lake

Due to Long Lake’s large area, LEA monitors and reports on the North, Main, and South basins individually. View the reports below for each basin.

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