Open: late May to early September Number of Sites: 150
Lake Dennison is a section of the Army Corps of Engineers Birch Hill Flood Control Project. The DCR, via Otter River State Park staff, manages 4,221 acres of Corp land for recreational use. Located in Winchendon, the park has 150 campsites. There is a swimming beach on Lake Dennison.
The campground office hours are 10am–10pm. The regular camping season is from late May to early September. At the beach you can swim between 10am and 8pm, but stay within the designated buoy areas.
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