| Swanson River | |
| Pushpin Map: | Canada Ontario |
| Pushpin Map Caption: | Location of the mouth of the Swanson River in Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Northeastern Ontario |
| Subdivision Type4: | District |
| Subdivision Name4: | Sudbury |
| Source1 Location: | Marhsall Township |
| Source1 Coordinates: | 47.9694°N -83.4453°W |
| Source1 Elevation: | 470m (1,540feet) |
| Mouth: | Schewabik Lake, Chapleau River |
| Mouth Location: | Copperfield Township |
| Mouth Coordinates: | 48.2303°N -83.1761°W |
| Mouth Elevation: | 349m (1,145feet) |
| River System: | James Bay drainage basin |
| Tributaries Right: | Little Swanson River |
The Swanson River is a river in Sudbury District in northeastern Ontario, Canada.[1] It is in the James Bay drainage basin, begins south of Mageau Lake and is a left tributary of the Chapleau River.
The river begins in geographic Marshall Township,[2] and flows north to Mageau Lake, where it enters geographic Mageau Township.[3] It heads northeast into geographic Manning Township,[4] continues northeast into geographic Floranna Township[5] followed by geographic Sadler Township. It enters geographic Lipsett Township,[6] takes in the right tributary Little Swanson River, heads east into geographic Copperfield Township,[7] and reaches its mouth at Schewabik Lake on the Chapleau River. The Chapleau River flows via the Kapuskasing River, the Mattagami River and the Moose River to James Bay.