Proper noun
Beaver Kill
A tributary of the East Branch Delaware River, a main tributary of the Delaware River, approximately 44 miles (71 km) long, in the U.S. state of New York.
Its tributaries are the Beaver Kill River and the Willowemoc Creek which enter into the river ten miles (16 km) before the West Branch meets the East Branch. Source: Internet
The former Foxes Creek, Beaver Kill, and Rutten Kill still exist, but were diverted underground in the 19th century. Source: Internet