| West Branch Mattawamkeag River | |
|---|---|
| Location | |
| Country | United States |
| Physical characteristics | |
| Source | |
| • location | Maine |
| • elevation | 890 feet (270 m) |
| Mouth | |
• location | Mattawamkeag River |
• coordinates | 45°50′01″N 67°59′28″W / 45.8335°N 67.991°W |
• elevation | 365 feet (111 m) |
| Length | 53 miles (85 km) |
| Basin features | |
| Progression | Mattawamkeag River – Penobscot River |
The West Branch Mattawamkeag River is a 52.6-mile-long (84.7 km)[1] tributary of the Mattawamkeag River in Maine. From its source (46°08′07″N 68°30′09″W / 46.1354°N 68.5025°W) in Maine Township 6, Range 6, WELS, the river runs 10 miles (16 km)[1] northeast by Pleasant Lake and through Mud Lake and Rockabema Lake, then 42 miles (68 km)[1] south and southeast through Upper Mattawamkeag Lake and Mattawamkeag Lake to its confluence with the East Branch Mattawamkeag River in Haynesville, about 10 miles (16 km) west of the Canada–United States border.