Peters Brook (Raritan River tributary)

Peters Brook is a tributary of the Raritan River that flows south through Bridgewater Township and Somerville, New Jersey, in the United States. Some of its tributaries include Ross Brook and Mac's Brook.

Peters Brook is approximately six miles long, beginning near the west side of I-287 and emptying into the Raritan River south of Somerville.

The Brook is named for Peter Van Nest, son of Dutch immigrant Pieter Van Nest. The homestead of the Van Nest family was in nearby Raritan near Glaser Avenue.

Peters Brook is notable for having high phosphate levels and flooding, receiving large amounts of stormwater.