| Saint-Charles River | |
| Source1: | Little lake on a golf club |
| Source1 Location: | Varennes |
| Source1 Coordinates: | 45.7204°N -73.3227°W |
| Source1 Elevation: | 31m (102feet) |
| Mouth: | Saint Lawrence River |
| Mouth Location: | Varennes |
| Mouth Coordinates: | 45.6478°N -73.4458°W |
| Mouth Elevation: | 7m (23feet) |
| Subdivision Type1: | Countries |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Administrative region |
| Subdivision Name3: | Montérégie |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Marguerite-D'Youville Regional County Municipality |
| Length: | 13.9km (08.6miles) |
| Basin Size: | NaNkm2 |
| Tributaries Left: | (upstream) Pays Brûlé stream, Petit Bois ditch, Geoffrion-Riendeau stream, Garand stream |
| Tributaries 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.
The main hydrographic slopes neighboring the Saint-Charles River are:
The Rivière aux Pins rises at the mouth of a small lake (length: ; altitude:) set up in the heart of a golf course. This river flows over, with a drop of, according to the following segments:
The mouth of the Saint-Charles river is located on the southeast bank of the Saint Lawrence River heart of the city of Varennes, opposite Île Sainte-Thérèse, either:
The toponym "Rivière aux Pins" was formalized on December 5, 1968, at the Commission de toponymie du Québec.[2]