The West Branch Pocwock Stream is a tributary of the Pocwock River flowing in:

Its runs entirely in forested area in isolated mountain valley, mainly in the Maine, at the Southeast of the Canada-US border. Its higher course is located at Northeast of Eastern Lake (Kamouraska).

"West Branch Pocwock Stream" empties on Northeast shore of Pocwock River which flows toward Southeast, up to a river elbow of Saint John River (Bay of Fundy). The later serpentine Eastward, than South-East crossing all the province of New Brunswick and empties on North Shore of Bay of Fundy which is opened to South West to Atlantic Ocean.

The watershed of Pocwock stream is accessible by some forest roads.

The upper portion of the "Pocwock brook" (French: ruisseau Pocwock) begins in Notre Dame Mountains, in the unorganized territory of Picard, Quebec, in Kamouraska Regional County Municipality, in Quebec. This source is located:

From the source in the mountains, the "West Branch Pocwock Stream" 15.1 kilometres (9.4 mi) as follows:

Higher course of the river (segment of 4.1 kilometres (2.5 mi), in Quebec)

Lower course of the river (segment of 11.0 kilometres (6.8 mi), in Quebec)