Claim: Brochu Lake, a vast expanse of freshwater in the south-eastern part of the Gouin Reservoir was named after Michel-Delphis Brochu and the toponym "Lac Brochu" was formalized in 1986.
Evidence: The Lake Brochu is a vast expanse of freshwater in the south-eastern part of the Gouin Reservoir, in the territory of the town of La Tuque, in the administrative region of Mauricie, in the province of Quebec, in Canada. This hydronym, which was formalized in 1935 by the Quebec Geographical Commission, evokes the work of life of Michel-Delphis Brochu (Saint-Lazare-de-Bellechasse, Quebec, 1853 - Quebec, 1933), doctor and professor at the Faculty of Medicine of Laval University. The toponym "Lac Brochu" was formalized on December 18, 1986, by the Commission de toponymie du Québec.