Forest Lake State Park, one of the ten original state parks, was created in 1935. The park spans 397 acres and its 200-foot sandy beach lies on the shore of Forest Lake. Popular activities in the park include swimming, picnicking, mountain biking, fishing, and boating.

Canoe, kayak, and other car-top boat users can access Forest Lake through the park only by carrying watercraft a few hundred feet from the parking area. There is no boat ramp within the park, one is available on Newell Lane off Forest Lake Road.

During the main operating season facilities are open at Forest Lake and staff are not typically present. This park is always open for recreation unless closed or restricted by posting. During the off-season, the park is typically not staffed and comfort stations are not available.