Hackensack River Hackensack River The Hackensack River is a river, approximately 45 miles (72 km) long, in the U.S. states of New York and New Jersey, emptying into Newark Bay, a back chamber of New York Harbor. The watershed of the river includes part of the suburban area outside New York City just west of the lower Hudson River, which it roughly parallels, separated from it by the New Jersey Palisades. It also flows through and drains the New Jersey Meadowlands. The lower river, which is navigable as far as the city of Hackensack, is heavily industrialized and forms a commercial extension
South Brunswick, New Jersey branches, the New York division of the Pennsylvania Railroad, the Rocky Hill and the Jamesburg and Freehold. The Lawrence Brook, a tributary of the Raritan River, flows through the township. Pigeon Swamp State Park is a New Jersey state park located on Deans Rhode Hall Road (Middlesex CR-610). The park has of undeveloped land. The township borders Cranbury Township, East Brunswick Township, Monroe Township, North Brunswick Township and Plainsboro Township in Middlesex County; Princeton in Mercer County; and Franklin Township in Somerset County. South Brunswick is in the humid continental climate zone. Average Winter-time high temperatures range from , and