The West Branch of the Dead Diamond River is a 2.7-mile (4.3 km) longriver in northern New Hampshire in the United States. It is a tributary of the Dead Diamond River, located in the Androscoggin River watershed of Maine and New Hampshire.
The West Branch of the Dead Diamond River rises in the town of Clarksville, New Hampshire, at the juncture of Rowell and Hellgate Brooks. Flowing southeast, it passes through a corner of the town of Pittsburg before joining the Dead Diamond in the Atkinson and Gilmanton Academy Grant.
Coordinates: 45°00′14″N 71°09′01″W / 45.00389°N 71.15028°W