Sebago Lake State Park: Lake, Camping, and Visitor Guide

Sebago Lake State Park sits on the northern shore of Sebago Lake, Maine’s second-largest lake and the source of Greater Portland’s drinking water. The park is one of Maine’s most popular family camping destinations, with sandy beaches, boat launches, and a developed campground.

The Lake and Beach

Sebago Lake is the centerpiece of the park and one of Maine’s most important freshwater lakes. It is Maine’s second-largest lake and the source of drinking water for Greater Portland, which is one reason visitors often notice how clear the water looks. The park has sandy swimming beaches, broad lake views, picnic areas, and boat access, making it a classic summer destination for families, paddlers, anglers, and boaters.

Swimming is popular during warm weather, but Sebago is a large, deep lake, so the water can still feel cool outside peak summer. Conditions can also change with wind, boat traffic, and weather, especially away from protected swimming areas. Boaters can use the park’s launch facilities during regular park hours; Maine’s current park information lists a $10 daily trailered-boat launch fee or the posted per-person day-use fee, whichever is less, while non-trailered boats pay the regular day-use fee. The Songo Lock is another notable feature nearby, operating seasonally from May 1 through October 15, 9 a.m. to 6 p.m., with a separate round-trip boat passage fee.

Fishing is available from the park, including summer access through the boat launch and winter access when ice conditions are safe. As always in Maine, anglers should carry the proper license and check current fishing regulations before casting.

Camping

Sebago Lake State Park is one of Maine’s busiest and most sought-after state park campgrounds, so reservations matter. The campground is on the Naples side of the park, with a separate day-use entrance on the Casco side. Maine lists the campground entrance at 3 Campground Lane in Naples and the day-use entrance at 11 Park Access Road in Casco.

The campground is designed for family camping, with lake access, wooded sites, beaches, boat access, restrooms, showers, picnic tables, and fire rings. Group camping is also available by reservation; Maine’s group camping information lists 14 group campsites at Sebago Lake, with each group site accommodating up to 15 campers, plus amenities such as water access, swimming beaches, drinking water, hiking trails, picnic tables, campfire rings, hot showers, and flush toilets.

For 2026, Maine’s campground reservation system opens Sebago Lake State Park reservations on February 2 at 9:00 a.m. Eastern, earlier than most other Maine state park campgrounds. Internet reservations continue through September 13 at 4:00 p.m., and campsites become first-come, first-served on September 14. Winter camping is also available, but visitors must contact the park directly at 207-693-6231 for details and reservations.

Trails and Activities

Sebago Lake State Park is not just a beach and campground. Its easy-to-moderate trails pass through forest, woodland, the Songo River corridor, and parts of the lake’s north shore. Wildlife such as deer and bald eagles are often seen along the trails, and winter trail maps are posted at parking areas.

In warmer months, visitors can hike, picnic, swim, fish, paddle, boat, and explore the park’s day-use and campground sides. Group picnic shelters and group picnic sites are available by reservation, making the park a good option for reunions, family gatherings, and larger summer outings.

Winter brings a quieter version of the park. On the Casco side, 5.5 miles of groomed trails are open for cross-country skiing and snowshoeing when conditions allow, including set track on 3.7 miles and 1.5 miles groomed for skate skiing. On the Naples side, 6 miles of ungroomed trails are available, along with the campground access road.

Pet Policy

Sebago Lake State Park has stricter pet rules than many Maine state parks. Pets are not allowed in the Sebago Lake State Park campground, even though most other Maine state park campgrounds allow leashed pets. Maine State Parks also prohibits pets on all state park beaches from April 1 through September 30.

Where pets are allowed elsewhere in the park, they must be on a leash and under the physical control of their handler, must not be left unattended, and pet waste must be picked up immediately. From October 1 through March 31, leashed pets are allowed on state park beaches, but campers should still remember that the Sebago Lake campground itself remains pet-free.

Practical Information

Sebago Lake State Park is split between Casco and Naples, about an hour northwest of Portland depending on traffic and which entrance you use. The day-use entrance is at 11 Park Access Road in Casco, while the campground entrance is at 3 Campground Lane in Naples. The park is open year-round, and Maine’s general state park rules list day-use hours as 9:00 a.m. to sunset unless posted otherwise.

Day-use fees are charged per person. Maine’s current fee table lists Sebago Lake at $6 for Maine resident adults, $8 for nonresident adults, and $2 for nonresident seniors; children ages 5 to 11 are $1, children under 5 are free, and Maine residents age 65 and older receive free day use with proof of age.

Summer is the peak season for swimming, camping, boating, and family trips, especially on warm weekends and holidays. Arrive early for day use, reserve camping as soon as reservations open, and bring sun protection, drinking water, lake-safe footwear, insect repellent, and properly fitted life jackets for boating or paddling. Spring and fall are better for quieter trail walks and lake views, while winter is best for skiing, snowshoeing, and a much calmer park experience when conditions cooperate.