| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| East Branch Mattawamkeag River | Mattawamkeag River | 58,000 | 45.8338000000 | -67.9908000000 | Map | ||||||
| Molunkus Stream | Mattawamkeag River | 58,000 | 45.5515000000 | -68.2225000000 | Map | ||||||
| West Branch Mattawamkeag River | Mattawamkeag River | 85,000 | 45.8335000000 | -67.9910000000 | Map |