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Saint-Charles River (Quebec City)

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Through Drainage basin, Montreal and Canada

The surface of the Saint-Charles River (except the rapids areas) is generally frozen from the beginning of December to the end of March; however, 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 spring flood occurs in March or April.

Geography

It springs from Saint-Charles Lake, follows a course of approximately 33 km (21 mi) and ends into Saint Lawrence River. Its drainage basin is 550 km2 (210 sq mi) large and a population of 350,000 persons live on its shores, in Quebec City and the Regional County Municipality of La Jacques-Cartier. It is the most densely populated drainage basin of any Quebec river, with an average population density of 600 inhabitants per square kilometer, mostly concentrated in the last third of its length. This makes its banks a popular place, organized around the linear park of the Saint-Charles river.

Drainage basin

Many streams of Québec City and the surroundings are tributary to Saint-Charles River.

The drainage basin includes six main sub-basins, that are, excluding the Saint-Charles' basin itself:

  • Rivière des Hurons
  • Jaune River
  • Nelson River
  • Rivière du Berger
  • Lorette River

Saint-Charles River's drainage basin also includes many secondary streams including:

  • Hibou River
  • rivière des Commissaires
  • rivière des Roches
  • rivière des Sept-Ponts
  • rivière Lairet
  • ruisseau du Valet
  • ruisseau Savard
  • ruisseau Ste-Barbe
  • ruisseau Pincourt

Crossing

The Saint-Charles river is crossed by 21 road bridges, 13 footbridges and 2 railways. In addition, there are 4 dams on its course. Among the main bridges are:

  • Scott Bridge
  • Marie-de-l'Incarnation Bridge
  • Trois-Soeurs Footbridge (Victoria Park)
  • Lavigueur Bridge
  • Pont Drouin
  • Dorchester Bridge
  • Viaduct of Autoroute Dufferin-Montmorency

River course

From the dam at the mouth of Saint-Charles Lake, the current of the Saint-Charles river descends on 33.8 kilometres (21.0 mi), with a drop of 148 metres (486 ft), according to the following segments:

  • 4.7 kilometres (2.9 mi) towards the south-east in an urban area by gathering the confluence of the Jaune River (coming from the northeast) and winding greatly to the Potato Bridge;
  • 5.5 kilometres (3.4 mi) to the south, winding greatly, collecting the Eaux Fraiches stream (coming from the west), to Nelson River (coming from the southwest) in the Château-d'Eau;
  • 6.5 kilometres (4.0 mi) to the south-east in an urban area, passing in particular through the Château-d'Eau and Village-des-Hurons neighborhoods, up to a bend in the river;
  • 4.9 kilometres (3.0 mi) towards the south-east in an urban area by crossing the Félix-Leclerc motorway, until the confluence of the Lorette River (coming from the south);
  • 4.2 kilometres (2.6 mi) towards the northeast in an urban area by forming two loops towards the north and in return, two loops towards the south, passing through the Frontenac industrial park and collecting the discharge from the Berger river (coming from the north), up to the route 740 bridge;
  • 8.3 kilometres (5.2 mi) to the northeast in an urban area, forming a loop to the north, passing under the railway bridges, du boulevard Wilfrid-Hamel, avenue du Pont-Scott, rue Marie-de-l'Incarnation, Laurentian highway, rue de la Croix-Rouge, rue du Pont, Dufferin-Montmorency Highway, Jean-Lesage Boulevard and the railway, to its mouth.

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