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Memphremagog Conservation Inc. (MCI) is a not-for-profit organization whose mission since 1967 is to protect the environmental health and preserve the natural beauty of Lake Memphremagog and its watershed. Made up of volunteers and with the strength and support of its members, MCI has worked diligently so that all the residents of the region, permanent and seasonal, waterfront or not, can enjoy the lake today and tomorrow, in harmony with nature.

Situated in the southern part of the Eastern Townships and crossed by the Canadian-American border, Lake Memphremagog is the largest body of water in the region. More than 170,000 people, representing more than 90% of the population of Sherbrooke, Magog, Omerville, Deauville, Ste-Elie and Lennoxville, get their drinking water from the lake. The wide range of recreational activities available attracts a large number of tourists and locals alike every year, making it a major tourist draw in the Eastern Townships.

Unfortunately, the signs of deterioration of Lake Memphremagog are clear: cyanobacteria blooms since 2006, the proliferation of aquatic plants and algae, the decline in water quality evidenced by a reduction in water clarity, a decline in the amount of oxygen in the water and an increase in sediments. The major cause of the deterioration of the lake is without a doubt excessive phosphorus loading. There are many sources of phosphorus, primarily resulting from human activities, of which agriculture, forestry and urbanization are the main culprits.


Give us a hand! You are part of the solution!


Robert Benoit

President volunteer





Binational Angler Survey to Begin on Lake Memphremagog

Binational Angler Survey to Begin on Lake Memphremagog Magog, January 11, 2019.

The Memphremagog Conservation Inc., the MRC Memphremagog the Ministère des Forêts, de la Faune et des Parcs and the Vermont Fish & Wildlife Department announce a binationa...

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Help Lake Memphremagog and Sign the petition!

DUMP (Don’t Undermine Memphremagog’s Purity) is a Vermont organization that is opposed to the Coventry landfill expansion. MCI join force with the group. We invite you to sign their petition on their...

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Presence of the zebra mussel in Magog Bay, Lake Memphremagog

Presence of the zebra mussel in Magog Bay, Lake Memphremagog To consult the report (In French only)

Invasive zebra mussel...

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Help MCI protect turtles!

Help MCI protect turtles! MCI will be conducting a turtle census in the lake Memphremagog watershed from June to October of this year. This census, an initiative of the Nature Conservancy of Canada, aims to pinpoint the distri...

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MCI’s annual general meeting: A very busy year for the protection of Lake Memphremagog

MCI’s annual general meeting:  A very busy year for the protection of Lake Memphremagog Georgeville, July 14, 2018 – Memphremagog Conservation Inc. (MCI) today held its 51st annual general meeting at the Murray Memorial Centre in Georgeville. The members were brought up to date on the ac...

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A second nature reserve for MCI !

A second nature reserve for MCI ! MCI is proud to announce the creation of a new protected area in the Lake Memphremagog watershed, the Powell-Creek (Lacasse-Benoit sector) nature reserve. This 14.7 ha. private nature reserve, recogni...

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