Denis-Perron dam

Denis-Perron dam (Barrage Denis-Perron) is a rockfill embankment dam spanning the Sainte-Marguerite River, a tributary of the lower Saint Lawrence River, in eastern Quebec, Canada. Standing 171 metres (561 ft) high and 378 metres (1, 240 ft) long, the dam is the primary component of Hydro-Québec's Sainte-Marguerite 3 hydroelectric project. The dam is the second highest in Quebec and the hydraulic head afforded to its power plant is also the largest in the province. Construction on the dam began in 1994 after seven years of studies and planning. Before construction began on the dam proper, a 19-metre (62 ft) high, 160-metre (520 ft) long cofferdam was raised to divert the river through a tunnel west of the dam site. An average of 500 workers and a maximum of 1,200, most of whom lived in a construction camp that opened in January 1995, were employed at the dam site during construction. After the cutting of some 233 million board feet of lumber from the future reservoir site, the dam began to impound water in 1998 and finally reached capacity in 2001. The dam and reservoir lie in a very remote region, and an 86-kilometre (53 mi) long access road had to be built to facilitate transportation to the construction site. No area residents were displaced as a result of the remote location, but a large portion of the territory of the indigenous Innu people was flooded. In 1994, Hyd

Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).