Merrimack County Access provides multiple public boat launch and access points along the Merrimack River in the Canterbury and Boscawen area, including trailer ramps, cartop canoe access, and beach/walk-in areas managed by state and local authorities.

Notable access sites include Boscawen Town Park with a park ramp, the Merrimack County Boat Launch with trailer facilities, and Riverland Conservation Area with beach access, offering diverse options for both motorized and paddle craft users.