Pochuck Creek is an 8.1 miles (13 km) tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Wallkill River

Wallkill River

The Wallkill River, a tributary of the Hudson, drains Lake Mohawk in Sparta, New Jersey, flowing from there generally northeasterly to Rondout Creek in New York, near Rosendale, with the combined flows reaching the Hudson at Kingston....

 in Sussex County

Sussex County, New Jersey

The County of Sussex is the northernmost county in the State of New Jersey. It is part of the New York City Metropolitan Area. As of the 2010 Federal decennial census, 149,265 persons resided in Sussex County...

, New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

, in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Pochuck Creek is called Wawayanda Creek

Wawayanda Creek

Wawayanda Creek is the name of Pochuck Creek above its confluence with the tributary Black Creek. It is long. Wawayanda Creek, via Pochuck Creek, is a tributary of the Wallkill River in Sussex County, New Jersey in the United States....

 above its confluence with the tributary Black Creek

Black Creek (New Jersey)

Black Creek is a tributary of Pochuck Creek in Sussex County, New Jersey, in the United States.-References:*Gertler, Edward. Garden State , Seneca Press, 2002. ISBN 0-9605908-8-9...

.

Wawayanda Creek starts northeast of Warwick, New York

Warwick, New York

Warwick is a town in Orange County, New York, United States. The population was 30,764 at the 2000 census. The 2007 census population estimate is 32,669.The Town of Warwick is located in the southwest part of the county...

, and runs mostly within Orange County

Orange County, New York

Orange County is a county located in the U.S. state of New York. It is part of the Poughkeepsie–Newburgh–Middletown, NY Metropolitan Statistical Area and is located at the northern reaches of the New York metropolitan area. The county sits in the state's scenic Mid-Hudson Region of the Hudson Valley...

, dipping into New Jersey for several miles and joining Black Creek just north of Highland Lakes. Pochuck Creek then turns north and returns to New York.