Lac Saint-Pierre

Situated along the Saint Lawrence River in Quebec, Lac Saint-Pierre is an unusual example in the World Network of Biosphere Reserves since it includes a major waterway in an industrialized area. The Lac Saint-Pierre is also a unique ecosystem, important for migratory birds and essential for the protection of Quebec and Canada. For instance, the largest number of herons recorded in North America is found in protected habitats in this area, which is also recognized as a Ramsar site.


Designation Date: 9 November 2000
Surface Area : 480 square kilometres
Administrative Division: Québec, Canada

Human Activities

  • Agriculture
  • Hunting
  • Commercial fishing and angling
  • Fauna reserves
  • Summer tourism for cottagers
  • Nautical sports
  • Merchant shipping
  • Trade
  • Light and heavy industry

Ecological Characteristics

Quebec’s most important conservation areas:

  • Ninety percent of the territory is in its natural state
  • Most important archipelago of the St. Laurent River (103 islands)
  • 20% of all the marshes of the St. Laurent River
  • 50% of the wetlands of the St. Laurent River
  • 27 species of rare plants
  • 79 species of fish, of which 2 are endangered

The most important migratory resting place for St. Laurent waterfowl 288 species of birds, 116 nesting and 12 endangered.

First spring migratory staging point for the Snow Goose on the St. Laurent River. The most important heronry in North America. RAMSAR site

Protection Classifications

  • RAMSAR site
  • Protected areas for fauna
  • Natural heritage

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                                                                            Last update: May 2014

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