| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rock Creek (Palouse River tributary) |  | 1,113,694,848 | Palouse River | 84,000 | 46.9125000000 | -117.9280000000 | Map | ||||
| Union Flat Creek | Palouse River | 116,000 | 46.8272000000 | -117.9990000000 | Map |