Whitehall State Park, State park in Hopkinton, Massachusetts, United States

Whitehall State Park is an 837-acre nature preserve centered on a 592-acre reservoir, with numerous trails that wind through forests and along shorelines. The site includes a boat launch facility and is available for water recreation with enforced speed limits for boats.

The park was established in 1947 after the reservoir stopped functioning as a water source for the Boston metropolitan area. This shift from a supply utility to a public recreation space marked a turning point for the land.

The park's name comes from the Whitehall Reservoir, which supplied water to the Greater Boston area until 1947, when it was withdrawn from service and the land became a state park. Visitors today fish, boat and walk the trails around the water.

The park offers a boat ramp for water access, with motorboat speeds capped at 12 miles per hour (19 kilometers per hour). Dogs must be leashed in non-water areas, and visitors should prepare for changing weather conditions throughout the seasons.

Whitehall State Park covers 837 acres around a 592-acre reservoir in Hopkinton, about 18 km east of Worcester. The reservoir sits roughly 108 metres above sea level, and the surrounding land rises to about 161 metres within 1.2 km. The lake was withdrawn from Boston's water supply in 1947, the year the park was created.