Southwest Branch Saint John River

Southwest Branch Saint John River
Location
Countries	Canada, United States
States	Quebec, Maine
Physical characteristics
Source
• location	Little Saint John Lake (French: Petit lac Saint-Jean), Maine–Quebec border
• coordinates	46°06′19″N 70°15′09″W / 46.10528°N 70.25250°W / 46.10528; -70.25250
• elevation	489 metres (1,604 ft)
Mouth
• location	Saint John River
• coordinates	46°33′46″N 69°53′06″W / 46.56278°N 69.88500°W / 46.56278; -69.88500
• elevation	333 metres (1,093 ft)
Length	91.9 kilometres (57.1 mi)
Basin features
Tributaries
• left	(from the mouth) In Maine: Carter Brook; in Quebec: Doucet Brook, Morning North Brook, Morning South Brook, discharge of Lac Croche, discharge of 3 unnamed little lakes, discharge of Giguère lake, discharge of Joli lake.
• right	(from the mouth) In Maine: Knowles Brook, Doucie Brook, Little Southwest Branch, Dead brook.

The Southwest Branch Saint John River (French: Rivière Saint-Jean Sud-Ouest) is a 62.0-mile-long (99.8 km)^[1] river in Maine and Quebec. The branch originates in "Little Saint John Lake" (46°06′18″N 70°15′09″W / 46.1050°N 70.2524°W / 46.1050; -70.2524 (Southwest Branch Saint John River source)) on the international boundary between Saint-Zacharie, Quebec and Seboomook Lake Township 5, Range 20, WELS. The branch forms the Canada–United States border as it flows northeasterly to a confluence with the Little Southwest Branch Saint John River in Seboomook Lake Township 9, Range 18, WELS. The Southwest Branch flows briefly into Quebec (46°24′58″N 70°03′24″W / 46.4162°N 70.0567°W / 46.4162; -70.0567 (Canada – United States border)) and then through Maine to its confluence with the Baker Branch Saint John River in Seboomook Lake Township 9, Range 17, WELS. The Southwest Branch finally joins with the Northwest Branch to form the Saint John River.