| Saint-Charles River | |
|---|---|
 | |
| Location | |
| Countries | Canada |
| Province | Quebec |
| Administrative region | Montérégie |
| Regional County Municipality | Marguerite-D'Youville Regional County Municipality |
| Physical characteristics | |
| Source | Little lake on a golf club |
| • location | Varennes |
| • coordinates | 45°43′13″N 73°19′22″W / 45.72036°N 73.32266°W |
| • elevation | 31 m (102 ft) |
| Mouth | Saint Lawrence River |
• location | Varennes |
• coordinates | 45°38′52″N 73°26′45″W / 45.64778°N 73.44583°W |
• elevation | 7 m (23 ft) |
| Length | 13.9 km (8.6 mi) |
| Basin features | |
| Tributaries | |
| • left | (upstream) Pays Brûlé stream, Petit Bois ditch, Geoffrion-Riendeau stream, Garand stream |
| • right | (upstream) Baronnie-Picardie creek. |
The rivière Saint-Charles is a tributary of the south shore of the Saint Lawrence River, flowing in the city of Varennes, in the Marguerite-D'Youville Regional County Municipality, in the administrative region of Montérégie, southwest of province of Quebec, to Canada.
The lower course of the Saint-Charles river more or less delimits the urban part of Varennes passing on the south side. The intermediate and upper parts flow in agricultural area.
The river surface is generally frozen from mid-December to the end of March. Safe circulation on the ice is generally done from the end of December to the beginning of March. The water level of the river varies with the seasons and the precipitation.