Construction of Manic-5

June 23, 2017

Manic-5 under construction

Manic-5 under construction. Canadian Museum of History, 2015.52

1959 to 1968

In 1959, Hydro-Québec began construction on the Manicouagan-Outardes project, a multi-dam hydroelectric complex built on the Manicouagan and Outardes Rivers. Manic-5, one of seven dams built during the project, is the largest multiple-arch buttress dam in the world. As construction took place during the social and political context of the Quiet Revolution, Manic-5 and the larger project captured the attention of the Québécois. Hydro-Québec itself also came to symbolize modernity in Quebec, as nationalization of hydroelectricity was the central theme of the 1962 election called by Jean Lesage and the Liberal Party.

Each day for 150 days leading up to the opening of the Canadian History Hall, we’re presenting one moment among the many that have shaped our country. Discover more of Canada’s significant historical events in the new Canadian History Hall, opening July 1, 2017.