| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chewuch River | 1,359,743,744 | Methow River | 72,000 | 48.4764000000 | -120.1830000000 | Map | |||||
| Twisp River | Methow River | 42,000 | 48.3683000000 | -120.1180000000 | Map |