Outardes-4 is a hydroelectric power station and dam on the Outardes River 70 km (43.5 mi) northwest of Baie-Comeau, Quebec, Canada.

[1][2] Outardes-4 was built in conjunction with the Manicouagan-Outardes project and is the northernmost power station on the Outardes River.

Construction on the diversion tunnel for the Outardes River began in September 1964 and was finished in April 1965.

Workers and engineers cleared alluvial material from the riverbed but ran into uplift faults and pot-holes.

[3] The Outardes-4 power station is located on the west bank of the Outardes River, adjacent to Dam No.