|Etymology||Raritan Indian tribe|
|Counties||Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset, Union|
|Municipalities||Raritan, Clinton, Bridgewater Township, Somerville, Bound Brook, South Bound Brook, Piscataway, Franklin Township, New Brunswick, Highland Park, Edison, East Brunswick, Sayreville, Woodbridge, Perth Amboy, South Amboy|
|• location||Confluence of South Branch Raritan River and North Branch Raritan River|
|• coordinates||40°33′20″N 74°41′14″W / 40.55556°N 74.68722°W|
|• elevation||47.7 ft (14.5 m)|
|40°29′41″N 74°16′17″W / 40.49472°N 74.27139°WCoordinates: 40°29′41″N 74°16′17″W / 40.49472°N 74.27139°W|
|0 ft (0 m)|
|Length||69.6 mi (112.0 km)|
|Basin size||1,100 sq mi (700,000 acres; 2,800 km2)|
|• average||200 ft (61 m)|
|• minimum||9 ft (2.7 m)|
|• maximum||25 ft (7.6 m)|
|• location||Bound Brook|
|• average||1,070 cu ft/s (30 m3/s)|
|• minimum||100 cu ft/s (2.8 m3/s)|
|• maximum||10,800 cu ft/s (310 m3/s)|
|• left||Peters Brook, Cuckles Brook, Middle Brook, Green Brook, Mill Brook, Red Root Creek, Crows Mill Creek|
|• right||Dukes Brook, Millstone River, Fox Creek, Mile Run, Lawrence Brook, South River|
|Bridges||Victory Bridge, Edison Bridge, Driscoll Bridge, New Jersey Turnpike, U.S. Highway No. 1 Bridge, highway bridge over South River at the town of South River|
Raritan River is a major river of New Jersey. Its watershed drains much of the mountainous area of the central part of the state, emptying into the Raritan Bay on the Atlantic Ocean.
Geologists assert that the lower Raritan provided the course of the mouth of the Hudson River approximately 6,000 years ago. Following the end of the last ice age, the Narrows had not yet been formed and the Hudson flowed along the Watchung Mountains to present-day Bound Brook, then followed the course of the Raritan eastward into Lower New York Bay.[page needed]
The name Raritan possibly derives from a branch of the Lenape people called the Nariticongs, the first people known to settle the Raritan Valley.
Following conflict with the arriving Dutch colonists, the native people of the region were forced to sell their territory near the Raritan Bay and move further inland along the river valley. As English colonists took over the region, they took advantage of the river's location between New York and Philadelphia as well as a road network developed by the Lenape to turn the region into a transportation and commercial hub. As a result, the Raritan River became an important waterway for colonial travel and trade, allowing for the development of trade centers like Raritan Landing and New Brunswick where agricultural and raw material goods could be sold.
During the American Revolutionary War, the river was the site of guerilla warfare by American militiamen against British patrols, culminating in the Battle of Bound Brook where a large British force attacked an American outpost south of the river.
The success of the Erie Canal sparked a "canal fever" in the United States, catalyzing the construction of the Delaware and Raritan Canal between New Brunswick on the Raritan and Bordentown on the Delaware to provide a critical link between New York City and Philadelphia on the Delaware River. The vast majority of traffic along the canal was Pennsylvania anthracite coal with the rest consisting mostly of agricultural goods, and at its peak in 1866 it transported more cargo than the Erie Canal. In 1932 the canal shut down for commercial use, though in 1974 it was turned into a state park for recreational use and remains used as a water supply for Central New Jersey.
The river forms at the confluence of the North and South Branches just west of Somerville at the border of Bridgewater, Branchburg, and Hillsborough Townships. It flows for approximately 16 mi (26 km) before slowing in tidewater at New Brunswick, and its estuary extends 14 mi (23 km) more entering the western end of Raritan Bay at South Amboy.
Comprehensive measures have been taken to reduce the pollution and increase the water quality. These actions have benefited the fish population which include (but are not limited to) largemouth bass, smallmouth bass, sunfish, catfish, trout, chain pickerel, american eels, carp and yellow perch. Pike can be found in relative abundance in some portions of the river like Clinton and Califon. An occasional Musky has been taken out of the Raritan as well. The tidal portions of the river host migratory salt water species such as striped bass, fluke, winter flounder, weakfish and bluefish. Recently, efforts to restore anadromous fish populations have been made, done by removing many of the obsolete dams and the constructing dam bypass infrastructure. Hopefully this will result in restoring shad, striped bass, and sturgeon populations in the river. Many nesting birds and water fowl make their homes in and along the length of the river. Crustaceans such as blue claw crab, fiddler crabs and green crabs are also found in the tidal sections of the river. Crayfish can be found farther upstream.
The river is also used for recreational boating, including use by the rowing team of Rutgers University in New Brunswick. The river is featured in the title of Rutgers' alma mater, On the Banks of the Old Raritan, and its flooding is mentioned in the song.
Near its mouth, the river is spanned by the Raritan Bay Drawbridge, a New Jersey Transit railroad bridge which carries the North Jersey Coast Line; the Victory Bridge which carries Route 35 (connecting Perth Amboy and Sayreville, New Jersey); the Edison Bridge, which carries U.S. Route 9 (connecting Woodbridge Township and Sayreville); and the Driscoll Bridge, which carries the Garden State Parkway (connecting Woodbridge Township and Sayreville).
The Raritan River is an important source of drinking water for the central portion of New Jersey. A water processing plant operated by New Jersey American Water is located in Somerset and draws its water at the confluence of the Raritan River and its largest tributary (the Millstone River), providing an average of 132,000,000 US gallons (500,000 m3) of water per day.
The New Jersey Water Supply Authority operates two reservoirs off of the Raritan river, the Spruce Run Reservoir and Round Valley Reservoir, and controls releases of water to ensure the “minimum passing flow rates” enforced by the New Jersey Department of Environmental Protection. Additionally, the Delaware and Raritan Canal, managed by the New Jersey Water Supply Authority, serves as a water supply that pumps over 100,000,000 US gallons (380,000 m3) of water per day from the Delaware to the Raritan river and serves over 1 million customers along the way
The Raritan River has persistent flooding problems when excessive rain from storms affects the river basin. The flooding problems mainly affect the town of Bound Brook, which is partially built on a natural floodplain at the junction of several tributaries, and Manville, which has a large neighborhood known as Lost Valley that lies on the floodplain between the Raritan River and its largest tributary river, which is known as the Millstone River. Other towns in the Raritan River basin also experience flooding to a lesser degree.
Record flooding in the aftermath of Hurricane Floyd in September 1999 (42.13 ft (12.84 m)) flood crest, 14 ft (4.3 m) above flood stage) caused renewed interest in a flood control project called the Green Brook Flood Control Project, which is designed to protect Bound Brook from a 150-year flood. In August 2011, record flooding occurred once again after Hurricane Irene swept through the area. This problem was exacerbated by well-above average rainfall that fell in the weeks before the storm hit, and spurred completion of the Army Corps of Engineers flood control project. As of 2015, the current status of this project is:
(In alphabetical order)
The Raritan river is formed by the confluence of:
Its main tributaries are: