The Bass River is a 4.7-mile-long (7.6 km)tributary of the Mullica River in southeastern New Jersey in the United States.
The river is located primarily in Bass River Township, New Jersey, which was named for the river, which was in turn named for Jeremiah Basse, who served as governor of both West Jersey and East Jersey.
It rises in the Pinelands of southeastern Burlington County and flows generally south, through Bass River State Forest, and joins the Mullica from the north approximately 1 mile (1.6 km) upstream from its mouth on Great Bay. The lower 2 miles (3.2 km) of the river forms an arm of the estuary of the Mullica. The river is part of the watershed of the Mullica that drains an extensive unspoiled wetlands region of New Jersey, and is noted for its runs of smallmouth bass.
The Bass River drains 9.2 square kilometers. The majority of the land within the drainage basin is forested, and under state protection. Near the mouth and lower parts of the river, there is tidal influence.
Tommys Branch
East Branch Bass River
West Branch Bass River
Dans Bridge Branch
Coordinates: 39°39′10″N 74°24′41″W / 39.65279°N 74.4115°W