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The river Richelieu


Click here to see the different types of streams

The river stretches through 124 km long. It has its source in the Champlain lake ( USA ) and flows from the South to the North to join the St-Laurent river, that goes into the St-Pierre lake ( Quebec ). During its quebec part, the river Richelieu Catchment Area has 18 lakes and ponds.

Nowadays, we can navigate between the river St-Laurent and New York city thanks to the river Richelieu .

THE RIVER'S COURSE

The average slop of the river is 0,19 m/km, pour un débit de 330 m 3 .s -1 , so we can say its flow is three times more important than the one of the river Charente with a gentler slope.

It can be separated in three parts :

The river Richelieu before St-Jean-sur-Richelieu

This part is almost flat : the slope is only of 0,3m for a 35 km length. Moreover, the river shrinks little by little, moving from 1,5 km wide to 250 m.

Thje river in the Haut-Richelieu (from St-Jean to Chambly )

The river course is punctuated with rapids : its slope is 25 m for 12 km. Then the river Richelieu gets wider in the Chambly Basin .

The river in the Bas-Richelieu (from Chambly to the St-Laurent)

In St-Ours, the river has a strong slope. It joins the St-Laurent river at the lavel of Sorel city.


CITIES ACROSS THE RIVER

Saint-Jean-Sur-Richelieu

Iberville

Chambly

Beloeil

Mont-Saint-Hilaire

Saint-Charles-sur-Richelieu

Saint-Denis

Saint-Ours

Soreil

 

THE CHAMPLAIN LAKE

The Champlain lake is the source of the river Richelieu, and it is mainly located on the New York state ( USA ), and its upper part is in Quebec . It is the sixth biggest water area of the USA : 1130 km², 180 km long for 19 km wide in its maximum, and 80 islands. Its water supplies 200 000 inhabitants in drinking water, that is to say 34 % of the catchment area population.

It is said that a marine monster, called Champie, lives in it. Nowadays, a lot of cruise boats and ferrys navigate on it, and there are fishing activities.

Click here to see the map of localisation of the Champlain lake

THE SAINT-LAURENT RIVER

This huge 1200 km long river has its source in the Big Lakes and flows into the Atlantic Ocean in the Saint-Laurent estuary. It has more than 100 affluents, and the river Richelieu is one of them.

 

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