| Mattawamkeag River | |
|---|---|
 | |
| Location | |
| Country | United States |
| Physical characteristics | |
| Source | |
| • location | Maine |
| • elevation | 365 feet (111 m) |
| Mouth | |
• location | Penobscot River |
• coordinates | 45°31′08″N 68°21′40″W / 45.519°N 68.361°W |
• elevation | 190 feet (58 m) |
| Length | 51 miles (82 km) |
| Basin features | |
| Tributaries | |
| • left | East Branch Mattawamkeag River |
| • right | West Branch Mattawamkeag River, Molunkus Stream |
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (November 2022) |
The Mattawamkeag River is a river in Maine. From the confluence of its East Branch and West Branch (45°50′00″N 67°59′27″W / 45.8334°N 67.9907°W) in Haynesville, about 10 miles (16 km) west of the Canada–United States border, the river runs 50.6 miles (81.4 km)[1] south and west to its mouth on the Penobscot River in Mattawamkeag.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-03-29 at the Wayback Machine, accessed June 22, 2011