| Stony Brook Branch | |
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Map of Stony Brook Branch
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| Country | United States |
| Basin features | |
| Main source | 40°21′31″N 74°48′38″W / 40.35861°N 74.81056°W |
| River mouth | 151 ft (46 m) 40°21′6″N 74°47′2″W / 40.35167°N 74.78389°WCoordinates: 40°21′6″N 74°47′2″W / 40.35167°N 74.78389°W |
| Progression | Stony Brook (Millstone River), Millstone River, Raritan River, Atlantic Ocean |
| River system | Raritan River system |
Stony Brook Branch is a tributary of the Stony Brook in Mercer County, New Jersey in the United States.
The Stony Brook Branch starts at 40°21′31″N 74°48′38″W / 40.35861°N 74.81056°W, in Sourland Mountain near Route 31 (Pennington Road). It flows east, crossing Route 31 and Pennington Hopewell Road before draining into the Stony Brook at 40°21′6″N 74°47′2″W / 40.35167°N 74.78389°W.