| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Teton River (Montana) |  | 5,248,000,000 | Marias River | 240,000 | 47.9319444444 | -110.5088888889 | Map | ||||
| Two Medicine River |  | Marias River | 48.4863888889 | -112.2277777778 | Map |