Développement durable, Environnement, Faune et Parcs
Home Site Map Québec Portal E-Mail Search About the site Français


Lac aux Brochets - Photo : MDDEPLakes are a crucial part of Québec’s natural heritage. They are significantly affected by our presence and the pressure we exert on them. It is important to observe the changes taking place in our lakes, and to understand what they mean so we can protect them better.

Lake acidity

Starting in the late 1970s, scientific studies showed that the southwest part of the province was receiving very acid precipitation. Programs put in place by a range of stakeholders have acted at the source, reducing SO2 emissions by 50% to 70%. The quality of numerous acid lakes has improved, yet the problem persists in a large number of particularly sensitive lakes.

Return to the top