Deer (Black tributary)

The Deer River is a 27-mile (43 km) long tributary of the Black River, in Lewis County, New York, in the United States. The river originates in the Tug Hill area and flows generally northeast, past Copenhagen, and under New York Route 26 to join the Black River approximately 3.5 miles (5.6 km) southeast of Carthage.

Source: Wikipedia https://en.wikipedia.org/wiki/Deer_River_(Black_River_tributary)