Sebago Lake is the lake that Portland drinks. Literally. It is the primary water supply for Greater Portland, which is why the water is absurdly clean and the development around it is (mostly) restrained. It is also the deepest lake in Maine at 316 feet, the second largest at 28,771 acres, and the warmest large lake for swimming in the southern part of the state. When July hits and Portland starts cooking, half the city drives 45 minutes northwest to Sebago.
That is not a complaint. There is plenty of room. Twenty-nine thousand acres is an enormous amount of water, and the lake sprawls across four towns with enough coves, points, islands, and shoreline to absorb the summer crowds without feeling overrun. On a Tuesday in July, you can find a cove to yourself with nothing but loon calls and the distant hum of a boat motor.
Swimming
Sebago Lake State Park Beach
Sebago Lake State Park has the best public beach on the lake. Period. A long crescent of clean sand on the north shore with a gradual entry that is perfect for kids, lifeguards from late June through Labor Day, bathhouses, and a picnic area shaded by tall pines. The water is clear enough to see your feet in 4 feet of water.
The beach faces south, so it gets sun all day. The sandy bottom extends about 50 yards before dropping off gradually. Water temperature peaks in late July and August, expect 70-75°F on the surface, which by Maine standards is downright tropical.
The catch: The parking lot fills. On sunny summer weekends, expect the gate to close by 11 AM as the park hits capacity. The rangers operate a one-out-one-in system after that, so if you arrive at noon you might wait 30-60 minutes. The solution is simple, get there by 9:30 AM.
The Witch Cove section of the state park (the campground side) has a smaller, less-known swim area. It is not the main beach, but it never hits capacity and the water is just as clean. Ask at the gate about day-use access to the Witch Cove area.
Tassel Top Beach
Tassel Top Beach is a town-owned public beach on the south side of Sebago in Raymond. Smaller than the state park beach, but also less crowded. Sandy shore, lifeguards in summer, and a pavilion area. There is a small admission fee ($5-$8 depending on residency). The view north across the lake to the White Mountains is excellent.
Other Swimming Access
Several town beaches and access points around Sebago offer swimming, though most are smaller and less developed:
- Standish Town Beach, Small sandy area on the western shore. Locals-only feel. Parking is limited.
- Raymond Beach, Jordan Bay area. Sand and gravel shore, popular with families in the Raymond area.
- Frye Island, An island community accessible by ferry from Raymond Cape. The island has a beach and casual summer vibe, though access is primarily for residents and guests.
Boating
Sebago is a major boating lake. With nearly 29,000 acres and a maximum fetch of over 10 miles, there is serious room for everything from sailboats to wakeboard boats to fishing rigs. The lake also has relatively relaxed regulations compared to some heavily managed Maine lakes, motorboats, water skiing, tubing, and wakeboarding are all allowed.
Boat Launches
| Launch | Location | Type | Notes |
|---|---|---|---|
| State Park Launch | Casco (North Shore) | Paved ramp | Best maintained, $20 launch fee + parking |
| Raymond Cape Launch | Raymond | Paved ramp | Town-operated, good access to Jordan Bay |
| Standish Town Ramp | Standish | Gravel ramp | Free, smaller, less congested |
| Sebago Basin | Windham | Marina + ramp | Full-service marina, fuel, rentals |
| Point Sebago | Casco | Marina + ramp | Resort marina, public launch available |
Fuel: Available at Sebago Basin Marina (Windham) and Point Sebago (Casco). Fill up before heading to the more remote parts of the lake.
Boat Rentals
If you do not have your own boat, several marinas and outfitters rent pontoon boats, fishing boats, kayaks, and paddleboards by the hour or day. Expect to pay $200-$400 for a full-day pontoon boat rental in peak season. Kayak and SUP rentals run $30-$50 for a half day.
Sebago is large enough to build dangerous waves in strong winds. The south-to-north fetch is over 10 miles. Afternoon thunderstorms in summer can bring sudden high winds and lightning. Check the marine forecast before heading out, carry safety equipment, and get off the water if you see storms building. The water temperature is cold enough to cause hypothermia even in summer if you are in the water for extended periods.
The Songo River
The Songo River connects Sebago Lake to Long Lake to the north, and paddling it is one of the best lazy-day activities in the region. The river is narrow, winding, and completely sheltered from wind, the opposite of open-water Sebago. Overhanging trees, lily pads, turtles on logs, and kingfishers diving for minnows. It is a 3-mile paddle each way.
The highlight is the Songo Lock, a hand-operated lock built in 1830 as part of the Cumberland and Oxford Canal. It is the last remaining lock on the canal and still works. The lockkeeper operates it manually. You paddle in, the gates close behind you, the water level changes, the gates ahead open, and you continue on your way. It is a genuine piece of living history, and kids are fascinated by the engineering.
The lock operates from mid-June through Labor Day. There is a small fee ($2-$3) for passage. Paddle upstream from Sebago into the lock for the full experience, then continue into Long Lake or turn around.
Rent a kayak or canoe at the state park and paddle the Songo River for a half-day trip. The river is calm, scenic, and protected from wind, perfect even on days when the open lake is too rough to paddle. The round trip from the state park to the lock and back is about 6 miles and takes 3-4 hours at a relaxed pace.
Fishing
Sebago Lake has a storied fishing heritage. This is the lake where landlocked Atlantic salmon were first identified as a distinct population in the 1800s. The salmon are still here, along with lake trout (togue), smallmouth bass, and brown trout.
What to Target
- Landlocked salmon, The signature fish. Spring (May) and fall (September-October) are best when salmon are near the surface. In summer they go deep. Trolling with streamer flies or small spoons is the traditional method. Fish average 16-20 inches.
- Lake trout (togue), Strong population in the deeper basins. Best in spring and fall when they are shallow, or deep (80-150 feet) with downriggers in summer. Fish over 10 pounds are possible.
- Smallmouth bass, Excellent fishery in the coves, around islands, and along rocky shoreline. Best from June through September on artificial lures or live bait. These are fun, aggressive fish that fight hard.
- Brown trout, Stocked periodically. Less common than salmon or togue but occasionally caught while trolling.
Fishing Regulations
Sebago Lake has special regulations to protect the salmon and lake trout populations. Check the current MDIFW rules for bag limits, size minimums, and bait restrictions before you fish. A Maine fishing license is required.
Nearby Hikes
Sebago Lake is in the Greater Portland region, which means excellent hiking is close by.
- Pleasant Mountain (Ledges Trail), The best hike near Sebago. A moderate 3.6-mile round trip to the summit of Pleasant Mountain (2,006 ft) with open ledge views of Sebago Lake, the White Mountains, and the surrounding lakes. The Ledges Trail has the best views. About 25 minutes from the state park.
- Douglas Mountain, A short, easy hike (1.5 miles round trip) in Sebago with a stone observation tower at the summit. Views of Sebago Lake and the foothills. Great for families with young kids.
- Bradbury Mountain, 20-minute summit hike in Bradbury Mountain State Park. Views of Casco Bay. About 30 minutes from Sebago.
- Streaked Mountain, A bare granite summit with panoramic views. Short hike (about 1.5 miles round trip) near Buckfield, about 40 minutes from Sebago.
Day Trip from Portland
Sebago Lake is one of the best day trips from Portland. The drive takes about 45 minutes via Route 302 through Windham and Raymond. Here is how to plan a full day.
Morning (9 AM): Arrive at Sebago Lake State Park before the parking lot fills. Set up at the beach. Swim, sunbathe, build sandcastles.
Late morning (11 AM): Rent a kayak or canoe and paddle the Songo River to the lock. Pack a lunch and eat on the water.
Afternoon (2 PM): Return to the beach for more swimming, or drive to Pleasant Mountain for a late-afternoon hike with views of the lake from above.
Evening: Stop in Bridgton or Naples on the way back for dinner. Both towns sit on the north end of the lake region and have good restaurants with lake views.
The Naples Causeway on Route 302 is the social scene on summer weekends, ice cream shops, boat traffic, and people-watching. If you want the opposite vibe, head to the Standish side of the lake where it is quieter and more residential.
Camping
Sebago Lake State Park has about 250 campsites in two areas:
- Naples Area, Quieter, more wooded, slightly farther from the beach. Better for people who want peace and privacy.
- Witch Cove Area, Closer to the beach and boat launch. More family-oriented and social. Some waterfront sites.
Reserve early for summer weekends, sites book months in advance for July and August. Midweek availability is usually better. The campground is open from mid-May through mid-October.
Other options within a short drive include private campgrounds along Route 302 and around Long Lake in the Naples/Bridgton area.
Practical Information
Water quality: Sebago Lake is the drinking water supply for Portland Water District, which serves over 200,000 people. The water quality is exceptional. It is one of only a handful of surface water supplies in the US that meets EPA filtration avoidance criteria. In plain English: it is very clean.
Water level: The Portland Water District manages the lake level. Expect the water to be highest in spring and lowest in late summer and fall. Low water years can expose more shoreline and shallow areas.
Boat inspections: Maine requires courtesy boat inspections to prevent invasive aquatic species. Inspectors are stationed at major launches during peak season. The inspection takes 5-10 minutes and is mandatory. Clean, drain, and dry your boat before launching.
How warm does Sebago Lake get?
Surface temperatures reach 70-75°F in late July and August, which is comfortable for extended swimming. The deeper water stays much colder, below 50°F below 40 feet even in summer. Sebago is one of the warmer large lakes in Maine for swimming.
Can you drink the water from Sebago Lake?
Sebago Lake is Portland's drinking water supply and the water quality is excellent. However, you should not drink untreated lake water directly, use proper filtration or treatment to remove potential bacteria and parasites.
Is Sebago Lake good for kayaking?
Yes, but with caveats. The open lake can build large waves in strong winds. The best kayaking is in the coves, along the sheltered shoreline, and especially on the Songo River, which is calm and protected. Morning paddles on the open lake are best, winds typically pick up in the afternoon.
How far is Sebago Lake from Portland?
About 45 minutes by car. Take Route 302 west through Windham. The state park entrance is in Casco.
Do I need a boat inspection at Sebago Lake?
Yes. Maine law requires courtesy boat inspections at public launches to prevent invasive species. Inspectors check boats at major Sebago launches during peak season. Clean, drain, and dry your boat and trailer before arriving to speed up the process.