Stony Brook State Park is a state park located in Dansville in Steuben County. The park is south of Dansville on State Route 36. Route 36 also connects the park to Stony Brook State Park Beach a short distance away.
The signature attraction of the park is the eponymous brook, which is an example of small, post-glacial streams in the Finger Lakes area. The small creeks and brooks in this area cut through the Great Lakes-area escarpments following retreat of the ice age glaciers, creating deep, narrow gorges, with many waterfalls, which are uncommonly accessible.
Initially 250 acres (1.0 km2), the park is now 577 acres (2.34 km2). It offers a beach, two stream-fed swimming pools, picnic tables and pavilions, a playground, a nature trail, hiking, fishing and bow-hunting (deer), a campground with tent and trailer sites, and cross-country skiing.