The damming of the Natchaug River by the Army Corps of Engineers has created a 500-acre lake for boating and fishing. No swimming is allowed since part of the lake is used for public water supply. Mansfield Hollow was established as a park in 1952.

Activities

Boating
Car-Top Boating
Cross-Country Skiing
Field Sports
Fishing
Hiking
Mountain Biking
Picnicking