Black River (New Jersey)

The Black River is a 32-mile (51 km) long river located in Morris County, New Jersey. It is a tributary of the North Branch Raritan River. The river is known for its relatively clear water, forested surroundings, and historical significance stemming from its use in powering mills during the industrial revolution.

The Black River's headwaters are located in the highlands region of northern Morris County, specifically near Budd Lake in Mount Olive Township. It flows generally southward through a predominantly rural landscape, passing through or near several towns and villages including Chester, Pottersville, and Hacklebarney State Park. The river joins the North Branch Raritan River near Pottersville in Bedminster Township, Somerset County.

Historically, the Black River was important for providing water power to numerous mills and industries along its course. Remnants of these mill sites can still be found in some areas. The river's watershed is also valued for its recreational opportunities, including hiking, fishing, and canoeing/kayaking. Hacklebarney State Park is a popular destination for outdoor enthusiasts seeking to enjoy the river and its surrounding natural beauty. The Black River Wildlife Management Area also offers opportunities for hunting and wildlife observation.

The Black River is subject to seasonal variations in flow and can experience periods of low water during dry spells. Conservation efforts are in place to protect the river's water quality and the surrounding ecosystem.