Pisgah State Park  occupies portions of three towns and elevations range from 120 m to 421 m and the largest body of water is  Pisgah Reservoir
The park occupies portions of three towns in southwestern New Hampshire: 8,320 acres (33.7 km) are in Winchester, the northern 4,660 acres (18.9 km) are in Chesterfield, and the westernmost 690 acres (2.8 km) are in Hinsdale. Elevations in the park range from 120 m (390 ft) above sea level along the Ashuelot River at the southwestern corner of the park to 421 m (1,381 ft) at the summit of Hubbard Hill near the park's northwestern boundary. The largest water body is the 120-acre (0.49 km) Pisgah Reservoir/Round Pond, west of the center of the park. 
