Head of Tide Park, found at the tidal start of the Cathance River in Topsham, features a stunning 15-foot waterfall, picnic pavilions, two boat launches, and a trailhead for exploring the river’s scenic waterfront. The park preserves historic mill sites, from Maine’s first sawmill in 1715 to a feldspar mill key to the 19th-century global market and protects a valuable freshwater tidal marsh ecosystem that supports dozens of plant and animal species. The Cathance River is part of Merrymeeting Bay, one of only four places worldwide where large rivers with separate watersheds converge to form a unique inland freshwater tidal delta.

Visitors can enjoy access to over six miles of trails between Head of Tide Park and Cathance River Nature Preserve, winding through deep woods, farmland, and along the pristine river, including the impressive locally made Clay Brook pedestrian bridge connecting to adjacent conserved lands. The river also offers diverse recreation from flatwater paddling and tidal wetland exploration to challenging whitewater runs, as well as rich fishing and hunting traditions, making Head of Tide Park a gateway to both natural beauty and local history in this hidden gem of the region.