Surrounded by a large number of picnic pavilions and recreational fields, Lake Sebago is considered to be the largest lake in Harriman State Park. The lake has a boat launch and people from different corners of New York come here to enjoy boating. Another thing it is famous for is fishing as the lake is full of sunfish, bass, and perch. In addition to this, Lake Sebago is also a haven for swimmers and campers. Kayaking, canoeing, and birdwatching.