Wadleigh State Park is a 50-acre (0.20 km2)+ state park in Sutton, New Hampshire, located on Kezar Lake. Activities include swimming, picnicking, fishing, and boating. Power boats are allowed, but the lake is not very large, and power boats could harass the loons that nest on an island. Amenities in the park include a bathhouse, picnic tables, and playing fields.