Amityville is a small town on the north shore of Great South Bay at its western extremity. The village wharf bares at low water at its face. Amityville Cut extends southward from Amityville Creek and joins the State Boat Channel near Gilgo Beach. The privately maintained and marked channel had a reported controlling depth of 8 feet in 1993.
Amityville Creek had a reported controlling depth of about 3 feet in 1981. The entrance to the creek is marked on the west side by a private light.
Several boatyards on the creek have marine railways, the largest of which can handle craft up to 50 feet in length; gasoline, water, ice, storage, marine supplies, and complete engine and hull repairs are available.
