| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Middle Santiam River | 269,358,752 | South Santiam River | 63,000 | 44.4161000000 | -122.6340000000 | Map | |||||
| Ames Creek (South Santiam River tributary) |  | South Santiam River | 44.3925000000 | -122.7244444400 | Map | ||||||
| Crabtree Creek (South Santiam River tributary) |  | 404,038,144 | South Santiam River | 44.6752777800 | -122.9588888900 | Map | |||||
| Thomas Creek (Linn County, Oregon) |  | 303,028,608 | South Santiam River | 56,000 | 44.6775000000 | -122.9719444400 | Map |