La Trenche Generating Station

La Trenche Generating Station is a hydroelectric power plant on the Saint-Maurice River and within La Tuque, in Upper-Mauricie, in the administrative region of Mauricie, in Quebec, in Canada. Its construction was completed in 1950. This power station was put into service immediately. It is the central sixth to block the river from its mouth. With its 302 MW, it is the most powerful. Hydro-Québec acquired La Trenche power from the Shawinigan Water & Power Company.

This concrete dam-gravity type has a height of 53 m and a length 442 m. Its retaining capacity is 6 million cubic meters of water at the outlet of Tourouvre lake. The lake is formed by a widening of the Saint-Maurice River because the dam receives water from the Trenche River.

Toponymy
The dam is named after the Trenche River.

The name "Tranche Dam" was officially registered on June 6, 2001, in the Bank of place names of the Commission de toponymie du Québec (Geographical Names Board of Québec).