The Memphremagog Conservation Inc. (MCI) was founded in 1967 by Gordon G. Kohl, Peter Kohl, and Herbert Mitchell, partially as a reaction to the extensive growth of algae on the lake during the summer of 1967, which alarmed many who used the lake. Administered by a board of seventeen directors, MCI is a non-profit organization with the mission to conserve the environment and natural beauty of Lake Memphremagog and its watershed. It achieves these objectives through the donations of its members and cooperation with similar environmental organizations.
With the rapid growth of its membership to over 1000 members, MCI has led and participated in numerous lake protection projects over the years. Among these are a large campaign against a Calgary-based company with plans to establish a houseboat rental business on the lake as well as another protesting the contemplation of the U.S. government to construct a nuclear waste dump in Vermont, which would have been located in the Lake Memphremagog drainage basin. Both of these projects were successfully defeated with the help of action taken by the MCI. Today, the MCI continues to fulfill its mission with a variety of projects aimed at the further protection of Lake Memphremagog and the education of the residents of its shores.