| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bog River (Maine) | East Branch Union River | 15,100 | 44.7517000000 | -68.2601000000 | Map | ||||||
| Middle Branch Union River | East Branch Union River | 23,000 | 44.7842000000 | -68.2844000000 | Map |