Wallkill River Facts



Wallkill River

From Wikipedia, the free encyclopedia
Wallkill River (Twischsawkin)
Wallkill River.JPG
Islands in the river near Walden, NY
Country United States
States New YorkNew Jersey
Counties Ulster, NYOrange, NYSussex, NJ
 – left Shawangunk Kill
 – right Papakating Creek
Cities New Paltz, NYWalden, NY,Montgomery, NYSparta, NJ
Source Lake Mohawk, New Jersey
 – location SpartaSussex CountyNJ
 – elevation 720 ft (219 m)
 – coordinates 41°01′58″N 74°38′38″W
Mouth Rondout Creek
 – location RiftonUlster CountyNY
 – elevation 0 ft (0 m)
 – coordinates 41°51′13″N 74°02′55″W
Length 88 mi (142 km) [1]
Basin 785 sq mi (2,033 km2[2]
Discharge for Gardiner, NY
 – average 1,365 cu ft/s (39 m3/s) [3]
The combined watersheds of the Wallkill and Rondout Creek

The Wallkill River, a tributary of the Hudson, drains Lake Mohawk in SpartaNew Jersey, flowing from there generally northeasterly 88.3 miles (142.1 km)[1] to Rondout Creek in New York, near Rosendale, with the combined flows reaching the Hudson at Kingston.

The river is unusual because it flows north between two major south-flowing rivers, theHudson and the Delaware River. It also has the unusual distinction of being a river that drains into a creek, due to being impounded shortly before the Rondout confluence into a small body of water called Sturgeon Pool near Rifton, and what reaches the Rondout from there is the lesser flow.




The Wallkill near floodstage in September 2006, in the National Wildlife Preserve, in Sussex County, NJ. The bridge has since been removed.

The broad valley of the Wallkill River nestles between the main Appalachian Mountains and the New York-New Jersey Highlands, supporting much localagriculture. It’s a part of the Great Appalachian Valley. In the beginning of its course it drains the eastern section of Sussex County, New Jersey, then flows through the Wallkill River National Wildlife Refuge at the New Jersey/New York state line. Most of the New Jersey portion is navigable by canoe.

The Black Dirt Region, seen from the north

Then it is heavily diverted as it flows through the richBlack Dirt Region of Warwick. Until drainage projects were built here, this region was known as the Drowned Lands. After lending its name to the town of Wallkill, in northern Orange County, it begins to regain its volume as it passes by Orange County AirportMontgomery and throughWalden, where dams have been built in the past to provide power for localindustry. The largest, in Walden, still is used by New York State Electric and Gastoday.

Dam, falls and NYSEG power station at Walden, seen here after heavy rainfall in October 2005

After briefly serving as the line between Orange andUlster counties, it passes by Wallkill, the second community to take its name from the river, and then the striking scenery of the Shawangunk Ridge is visible as it winds past the Ulster County Fairgrounds andNew Paltz, where its floodplain becomes more noticeable, on the way to its mouth at the Rondout.

The Wallkill tends to cross political borders much more often than it forms them, at least in New York (in New Jersey it divides several townships). Other than the brief segment that follows the Orange-Ulster line, there is only southern Orange County, where it divides the towns of MinisinkWawayanda and Wallkill on its west from Warwick and Goshen to the east. Two villages, Montgomery and New Paltz, are also bounded by the river in part.

In addition to the town and hamlet in New York, two school districts take their name from the river: Wallkill Valley Regional School District, in New Jersey and Wallkill Central in New York (Valley Central also derives its name indirectly from the river).

Sturgeon Pond, created by impounding the Wallkill shortly before it joins the Rondout.


Native Americans knew the river as Twischsawkin. At least three prehistoric rock shelters have been found in archaeological digs in the region. For the indigenous peoples, it was not only important for its arable land but for its geological resources. The river and its valley are abundant in flint and chert, from which they made spear points and arrowheads.[4]

European settlers of the region named it first the Palse River, after New Paltz. Later, when it was clear that the river continued well beyond the original New Paltz patent, it took after the Waal river in their nativeNetherlands. They worked their way down it from the Hudson Valley in the 17th century, and were followed by the British after the colony changed hands.[4]

Settlers recognized the agricultural possibilities of the Drowned Lands almost as soon as they moved in. Efforts to divert the river and create more farmland appear to have begun as early as 1760. It would take 66 years, however, before a canal succeeded in draining the land and making enough available to profitably cultivate.[4]

The Montgomery Worsted Mills, an early river industry still in business today

By that time industry was beginning to harness the river, too, as Jacob Walden established his mill in the village downriver that would later take his name. Millers in the Black Dirt Region clashed heavily with farmers in what were known as the Muskrat and Beaver Wars for decades afterwards, since the millers needed the water to flow freely while the farmers depended on keeping it diverted. In 1871 the farmers finally won. What industry there was would be confined to Montgomery and Walden where the railroad ran nearby.[4]

In August 1955, the river experienced record-breaking flooding when hurricanes Connie and Dianebrought heavy rainfall to the region.[5] Heavy flooding of the river and its smaller tributaries from the April 2007 nor’easter forced a number of road closures and evacuations of homes in its flood plain in central Orange County.


The Wallkill has 69 tributaries in New York alone. Thirty are named.[2]

Moving downriver (south to north)

See also[edit]



  1. Jump up to:a b U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed October 3, 2011
  2. Jump up to:a b Ulster County Soil and Water Conservation District, 2005, Draft Wallkill Watershed Conservation and Management Plan, 11, retrieved March 21, 2007.
  3. Jump up^ United States Geological SurveyWallkill River at Gardiner, NY; average annual discharge table. Figure given is for 2005. Retrieved March 14, 2007.
  4. Jump up to:a b c d U.S. Fish and Wildlife Service (USFWS); History; retrieved March 22, 2007.
  5. Jump up^ “The Floods Of Hurricane Connie And Diane”. Erh.noaa.gov. Retrieved 2012-03-09.

External links[edit]

Wikimedia Commons has media related to Wallkill River.
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