Claim: Supawna Meadows National Wildlife Refuge, established in 1974 and located in Salem County, New Jersey, United States, covers a land area of 3,230.55 hectares (13 km) governed by U.S. Fish and Wildlife Service.
Evidence: 1974 Salem County, New Jersey, United States 3,230.55 acres (13 km) U.S. Fish and Wildlife Service 
A component of the Delaware River estuary in Salem County, New Jersey, it is just north of the Salem River and south of Pennsville. 1974 3,230.55 acres (13 km) U.S. Fish and Wildlife Service