Sebago Lake is the deepest lake in Maine and the second largest lake after Moosehead Lake. The lake is 12 miles long with a shoreline stretching for 105 miles. It is connected to Brandy Pond by the Songo River and eventually to Long Lake in Naples.
The Sebago Lake watershed includes 24 towns and covers approximately 300,000 acres. Water from this land area eventually reaches Sebago Lake. Development of watershed properties in these towns as well as the approximately 4000 lots that are within 200 feet of the lake can have a substantial impact the water quality of Sebago Lake.
Sebago Lake also serves as the drinking water source for over 200,000 Mainers. Forested watersheds are essential to clean water, so LEA works collaboratively with Sebago Clean Waters and local land trusts across the watershed to address land use concerns and ensure that large portions of the watershed remain forested.
Click below for the most recent data summary.
Water Quality Monitoring SummaryLEA also has active Courtesy Boat Inspection and LakeSmart programs on Sebago Lake and offers technical assistance to landowners through Clean Lake Check Ups.
The lake contains natural populations of landlocked salmon (Salmo salar sebago) and smelt. When the last major glaciers retreated, the entire watershed was under seawater and populations of these marine animals became established as the land rose and seawaters retreated. Sebago Lake also holds a legendary place in Maine fishing lore as the home of the onetime world record (and still state-record) landlocked salmon; a 22.5-pounder caught September 12, 1907, by Edward Blakeley of Darien, CT. Recently, however, some of the biggest fish to come out of Sebago have been invasive Northern pike, which were introduced illegally and first documented in the lake in 2003. Northern pike were added to a number of Maine waters, fisheries biologists believe, by people trying to improve the fishing without regard to the serious consequences for native fish populations. A 17½-pound, 41-inch pike that was caught on Sebago on March 16, 2010, and had a 13-inch salmon in its stomach. Other game fish found in Sebago lake include lake trout, brook trout, brown trout, smallmouth bass and largemouth bass.
General fishing laws apply, except: S-1 (Closed to the taking of smelts). Minimum length limit on landlocked salmon: 16 inches. No bag limit for togue under 26 inches and no minimum length limit; only 1 may equal or exceed 26 inches. All trout (excluding lake trout) and landlocked salmon caught while ice fishing must be released immediately without removal from the water. Closed to all fishing within 100 feet of Whiteís Bridge. From October 1 – December 31: ALO (Artificial lures only). Togue may be harvested as described above. From October 1 – March 31: All trout (excluding lake trout) and landlocked salmon caught while open water fishing must be released alive at once.
Direct tributaries are closed to fishing, except for the lower reach of the Muddy River south of the Lake House Road and the lower reach of the Sticky River northeast of the Route 114 crossing. Closed to open water fishing is the ìmouth of the Songo Riverî, which is the area to the north of a line drawn between Bear Point and Outer Island and then along a line to the north shore.
Portland Water District restrictions: (1) the portion of Sebago Lake within 3,000 feet of the water intakes in Standish is a “No Trespassing” zone; and (2) the area from the “No Trespassing” zone to 2 miles from the water intakes is a “No Bodily Contact” zone and no motor vehicles are allowed on the ice (motorboats, ATVs, and snowmobiles are allowed).
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