Lake Sebago Beach - Harriman State Park
Attention Lake Sebago Users
Hydrilla, a federally listed aquatic invasive species, was found in Lake Sebago in late 2022. If left unmanaged this aquatic plant can severely impact water quality and recreation. State Parks is implementing a 5-year treatment plan starting early June 2023. Yellow notice signs will be placed at public access points.
For further information, please visit : https://littlebearenvironmental.com/lake-sebago-hydrilla-control-project/
Palisades Interstate Park Commission
Bear Mountain, NY 10911
- General Information: (845) 429-8257
Lake Sebago Beach in Harriman State Park is currently closed.
The boat launch on Lake Sebago remains open. Boaters must obtain a boat permit for the season. Please call 845-429-8257 for details.
No Pets allowed
Lake Sebago Rehabilitation Public Meeting Information and Repository
- July 9, 2025, Virtual Public Meeting Recording
- Public Meeting Presentation Slides
- Fact Sheet
- Public Participation Plan
Hours of Operation
- Swimming: Closed
- Boat launch: Permit Required. Call 845-429-8257
- Park Hours: Closed
Amenities Information
- Amenities
- Boat Launches
- Fishing
- Hiking