 A new dam was completed in 2005 that enlarged the reservoir and supported the new Toulnustouc generating station.The Lac-Sainte-Anne Reservoir was created when the Sainte-Anne Dam () at was filled in 1957.Its purpose was to regulate the flow of water in the Toulnustouc River that powers the downstream Manic-2, Manic-1 and older McCormick hydroelectric plants.