| Northwest Branch Saint John River | |
|---|---|
 | |
 | |
| Native name | Décharge du Lac Frontière (French) |
| Location | |
| Countries | Canada, United States |
| States | Quebec, Maine |
| Cities | Lac-Frontière, Quebec |
| Physical characteristics | |
| Source | |
| • location | Frontier Lake (Quebec-Maine), municipality of Lac-Frontière, Quebec, Montmagny Regional County Municipality, Quebec |
| • coordinates | 46°42′05″N 69°59′55″W / 46.70139°N 69.99861°W |
| • elevation | 357 metres (1,171 ft) |
| Mouth | |
• location | Saint John River, Somerset County, Maine, Maine, United States |
• coordinates | 46°33′48″N 69°53′08″W / 46.56333°N 69.88556°W |
• elevation | 318 metres (1,043 ft) |
| Length | about 20.7 kilometres (12.9 mi) |
| Basin features | |
| Tributaries | |
| • left | (from the mouth) Oak Brook, Bean Brook, discharge of Beaver Pond. |
| • right | (from the mouth) Eastman Brook, Daaquam River, Otter Brook (or "rivière à la Loutre" in Quebec). |
The Northwest Branch Saint John River (French: Décharge du Lac Frontière) is a 15.5-mile-long (24.9 km)[1] river primarily in Aroostook County, Maine, USA. Its origin (46°42′04″N 69°59′55″W / 46.7012°N 69.9987°W) is Frontier Lake (Quebec-Maine) in Quebec, Canada. After crossing the Canada–United States border, the Northwest Branch runs south close to the border until it picks up its tributary, the Daaquam River, which also flows out of Canada. The Northwest Branch then runs generally eastward to its confluence with the Southwest Branch to form the Saint John River.
Has current flowing in:
- Montmagny Regional County Municipality (RCM): municipality of Lac-Frontière, Quebec;
- Aroostook County: (township T11 R17 WELS), in the state of Maine;
- Somerset County, Maine: (township T10 R17 WELS), in the state of Maine.
On the Canadian side, the road 283 runs along the Canada-US border on 6.4 kilometres (4.0 mi) and crosses the "Northwest Branch Saint John River" at the South East side of the Frontier Lake (Quebec-Maine).
On the US side, a road from Frontier Lake (Quebec-Maine) moves Eastward through the mountains. In addition, a road runs on the North bank on a river segment, downstream of the confluence of the Daaquam River and serves the township T11 R17 WELS in the North Maine Woods.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed June 22, 2011