| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Balch Creek |  | 9,064,958 | 340 | Willamette River | 6,000 | 45.5378000000 | -122.7110000000 | Map | |||
| Calapooia River |  | 968,655,488 | 1,387 | Willamette River | 129,000 | 44.6389000000 | -123.1100000000 | Map | |||
| Champoeg Creek |  | Willamette River | 10,000 | 45.2539000000 | -122.8820000000 | Map | |||||
| Chehalem Creek |  | 175,601,200 | Willamette River | 45.4678000000 | -123.0160000000 | Map | |||||
| Clackamas River |  | 2,434,588,672 | 1,496 | Olallie Butte | Willamette River | 134,000 | 45.3725000000 | -122.6090000000 | Map |