Selden Neck State Park Access provides boat-only access to a 607-acre island in the Connecticut River via a DEEP car-top boat launch located on the east side of the river at the intersection of Route 148 and the Chester-Hadlyme Ferry.

The island features four primitive riverside camping areas (Cedars, Hogback, Springledge, and Quarry Knob) accommodating up to 46 campers total, plus approximately 5 miles of hiking trails and opportunities for fishing and hunting.

Paddlers and anglers should note that access is exclusively by water, with no vehicle parking or facilities on the island itself.