| Staples River | |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Caption: | Location of the mouth of the river in Southern Ontario |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Ontario |
| Subdivision Type3: | Region |
| Subdivision Name3: | Central Ontario |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Kawartha Lakes |
| Length: | 18km (11miles) |
| Source1: | Unnamed confluence |
| Source1 Location: | Eldon Township |
| Source1 Coordinates: | 44.4273°N -78.9575°W |
| Source1 Elevation: | 274m (899feet) |
| Mouth: | Balsam Lake |
| Mouth Location: | Fenelon Township |
| Mouth Coordinates: | 44.5522°N -78.8917°W |
| Mouth Elevation: | 256m (840feet) |
| River System: | Great Lakes Basin |
| Basin Size: | 4792ha |
The Staples River is a river in Kawartha Lakes in Central Ontario, Canada.[1] [2] [3] It is in the Great Lakes Basin and is a tributary of Balsam Lake. The river is long and has a watershed of .[4]
The river begins at an unnamed confluence of streams, northwest of the community of Grasshill in geographic Eldon Township, and flows northeast to its mouth at the West Bay on Balsam Lake in geographic Fenelon Township, at the summit of the Trent–Severn Waterway.