Preserving the health and beauty of our lake
Enviro Lac Gauvreau
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Enviro Lac Gauvreau

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Research Documents and Resource Links


June, 2026 — Last summer, Enviro Lac Gauvreau commissioned FYTO — specialists in invasive aquatic plant management — to conduct a full survey of Eurasian watermilfoil in Lac Gauvreau and to develop a strategy to fight it. They started with a characterisation of the lake, and based on the results, developed a strategy with three scenarios.

The Situation Now
 
Eurasian watermilfoil has been present in our lake for well over a decade, and the 2025 characterization gives us the clearest picture yet of how it has evolved. The July 2025 survey — carried out by a team using a boat-mounted aquascope and aerial drone imagery — identified 149 aquatic plant beds covering 146,182 m² (16.1% of the lake). Of these, 140 beds contain Eurasian watermilfoil, totalling 134,136 m², or 14.7% of the lake's surface, running along nearly the entire shoreline with the largest, densest beds concentrated in the north and around Île Sainte-Anne.

1. Research Documents Table of Contents by Year
> Click on this link to view the Research Documents Table of Contents (PDF). Click on the yellow links to view each document.
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LASTEST LAKE NEWS