| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bridge Creek (John Day River tributary) |  | 691,526,784 | John Day River | 45,000 | 44.7361000000 | -120.3080000000 | Map | ||||
| Rock Creek (John Day River tributary) | 1,313,123,968 | John Day River | 132,000 | 45.5767000000 | -120.4050000000 | Map | |||||
| South Fork John Day River |  | 1,569,532,672 | John Day River | 97,000 | 44.4739000000 | -119.5360000000 | Map | ||||
| North Fork John Day River |  | 4,661,978,624 | John Day River | 172,000 | 44.7561000000 | -119.6390000000 | Map |