The Westville Dam is a flood control dam on the Quinebaug River, operated by the US Army Corps of Engineers, about four miles southeast of Sturbridge center. Built in 1961, it's a dry dam — meaning the reservoir only fills during high-water events, and the valley behind the dam is otherwise open meadow and forest. The Army Corps maintains a recreation area around the dam with picnic tables, gravel walking paths, and river access for fishing. The Quinebaug holds smallmouth bass, chain pickerel, and brown trout, and the stretch below the dam is reasonably productive in spring and early summer.
The atmosphere is low-key and unhurried — this is a working flood control structure with recreational access as a secondary function, not a developed park. Expect basic facilities: pit toilets, mowed grass, and minimal signage. The walking trails follow the river valley and offer views of the dam structure itself, which is substantial. On weekdays in summer it's often nearly empty, which makes it useful as a quiet picnic spot away from the Route 20 corridor. The surrounding forest is part of the broader Quinebaug River watershed, and the birdwatching is decent for a site this accessible.