Ellsworth’s Liquid Asset
Branch Lake covers 2,942 acres of clean, deep water in the hills north and west of Ellsworth, just a short drive from Acadia National Park. It is Ellsworth’s sole source of public drinking water, and that status has kept the lake remarkably pristine. The water quality is excellent, the surrounding forest is largely undeveloped, and the access restrictions that protect the water supply have the side effect of keeping crowds away.
The lake reaches a maximum depth of 124 feet and has 23 miles of shoreline. The water is cold and clear, supporting both coldwater and warm-water fish species. Unlike many lakes near Acadia, Branch Lake feels secluded and quiet, even in the peak of summer tourism.
On the Water
Access to Branch Lake comes with rules. Because the lake is a public water supply, all watercraft must be inspected and issued a permit (sticker) before launching. The inspection program is run by the City of Ellsworth and is designed to prevent the introduction of invasive aquatic plants. The inspection and permit are free but mandatory.
Once you are on the water, Branch Lake is a beautiful place to paddle. The shoreline alternates between rocky points, sandy coves, and forested stretches with minimal development in many areas. The lake is large enough for a full day of kayaking or canoeing, with plenty of coves and inlets to explore.
Motorboats are permitted with a valid inspection tag. The lake handles a mix of motorboats, sailboats, and paddlecraft, but traffic is lighter than you would expect for a lake of this size.
All boats, kayaks, canoes, paddleboards, and any other watercraft must pass an inspection and receive a valid Branch Lake permit tag before launching. This includes inflatables. Launching without a tag is a violation of city ordinance. Contact the City of Ellsworth for inspection locations, hours, and any seasonal updates to the program.
Fishing
Branch Lake offers a solid mixed fishery. The cold, deep water supports:
- Landlocked Salmon hold in the deep, cold water during summer and move shallower in spring and fall. Trolling with lead-core line or light tackle is productive.
- Smallmouth Bass are the most popular target in summer. Rocky structure along the shoreline holds good numbers of bass from June through September.
- White Perch are abundant and fun on light tackle.
- Chain Pickerel are common in the shallow coves and weed beds.
A Maine fishing license is required for anyone 16 and older.
Smallmouth bass fishing on Branch Lake is underrated. The rocky shoreline and clear water make for excellent sight-fishing on calm mornings. Use light spinning tackle with soft plastics or small crankbaits along the rocky points.
Branch Lake Public Forest
The Branch Lake Public Forest covers about 239 acres on the lake’s east shore, managed by the Frenchman Bay Conservancy. The forest has a network of hiking trails, some of which lead to the lakeshore. The trails are moderately difficult, winding through mixed forest with some rocky sections. It is a nice complement to a day on the water, or a standalone outing if you want to stretch your legs near Acadia without fighting park traffic.
The trails in Branch Lake Public Forest are an excellent alternative to Acadia’s busy trail system. You will encounter very few other hikers, and the forest is quiet and well-maintained. The trails that lead to the shore offer peaceful views of the lake without needing a boat.
When to Go
Spring
Ice-out in late April. Salmon fishing picks up quickly. The forest trails can be muddy through mid-May.
Summer
Best paddling and fishing conditions. Long days on the water. Quieter than nearby Acadia. Get your boat inspection done early in the season.
Fall
Foliage around the lake is pretty in early October. Salmon and bass fishing remains productive. Fewer boats on the water.
Winter
Ice fishing is permitted with a valid inspection tag. The public forest trails are good for snowshoeing. Cold and quiet.
Practical Notes
Cell service is spotty around Branch Lake. You will get a signal in Ellsworth proper, but coverage fades near the lake. Ellsworth is a full-service town with grocery stores, gas stations, restaurants, and lodging, just a few minutes from the lake.
Swimming is not a primary use of Branch Lake due to its status as a drinking water source. While there is no formal swimming area, the city does not prohibit incidental contact with the water. Use good judgment.
Branch Lake Packing List
- Valid boat inspection tag (mandatory before launching)
- Fishing license (if fishing)
- Life jackets
- Sunscreen
- Bug spray (May through June)
- Layers (the lake can be cool even in summer)
- Drinking water and snacks
Getting There
From Ellsworth, Branch Lake is accessible via Route 1A North and Branch Lake Road. The drive from downtown Ellsworth takes about 10 to 15 minutes. From Bangor, allow about 30 minutes via Route 1A. From Portland, the drive takes about 2 hours and 45 minutes via I-95 and Route 1A.
FAQ
Do I need a boat inspection to launch on Branch Lake?
Yes. All watercraft, including kayaks, canoes, and paddleboards, must be inspected and receive a permit tag from the City of Ellsworth before launching. The inspection is free and designed to prevent invasive species.
Can I swim in Branch Lake?
Branch Lake is Ellsworth's public water supply. There is no formal swimming area. While incidental water contact is not prohibited, swimming is not encouraged. Use good judgment and respect the water source.
How deep is Branch Lake?
Maximum depth is 124 feet. The deep, cold water supports landlocked salmon and other coldwater species. The lake has 23 miles of shoreline and covers 2,942 acres.
Is Branch Lake near Acadia?
Yes. Branch Lake is in Ellsworth, about 15 miles from the Acadia National Park entrance at Bar Harbor. It makes a good day trip for paddlers and anglers who want to explore beyond the park.
Are there hiking trails at Branch Lake?
Yes. The Branch Lake Public Forest on the east shore has a network of hiking trails managed by Frenchman Bay Conservancy. Some trails lead to the lakeshore.
