Merrimack River Access in Merrimack County offers multiple public boat launch and canoe access points along the 117-mile river, including trailer ramps and cartop facilities at locations like Boscawen Town Park and Canterbury's Intervale Road.

Several access sites provide both motorized and non-motorized boating opportunities, with some sections designated as trout waters requiring fly-fishing only regulations.

Parking and facilities vary by location, with most sites offering 24-hour access at no fee.