Oak Tree Pond, used by generations of residents for fishing and skating, has a surface area of one acre, making it the largest body of water in northern Edison. Spring fed, the pond also receives runoff from the surrounding area. The outflow from the pond eventually flows into a small stream, entering the Bound Brook in the Dismal Swamp. It then joins the Green Brook, which flows into the Raritan River. The pond is a great place to view various birds, such as Canada Geese, Mallard Duck, Great Blue Heron, egrets and migrating waterfowl. Red Tail and other hawks have also been seen in the park. Fish such as bass and sunfish have been caught at the pond.