Cory's Brook is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Passaic River Passaic River ( ) is a river, approximately long, in Northern New Jersey. The river in its upper course flows in a highly circuitous route, meandering through the swamp lowlands between the ridge hills of rural and suburban northern New Jersey, ...

that has its source in

Warren, New Jersey Warren Township is a township in Somerset County, New Jersey, United States. The township is a bedroom suburb of New York City in the much larger New York metropolitan area, located within the Raritan Valley region. As of the 2020 United State ...

and forms the boundary of

Union County, New Jersey Union County is a county in the northern part of the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 575,345, making it the seventh-most populous of New Jersey's 21 counties. Its county seat is Elizabeth.

. The brook forms a pond at the East County Park in Warren Township.

See also