Bluff Point State Park is a public recreation area and nature preserve on an undeveloped peninsula located between the Poquonnock River and Mumford Cove on Long Island Sound in the town of Groton, Connecticut. The state park's 806 acres (326 ha) encompass a barrier beach, steep cliffs, forested sections, and tidal wetlands; 778 acres (315 ha) are designated as a coastal reserve.