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Daniel-Johnson Dam, Baie Comeau

(4.8/5 based on 50+ reviews on the web)
The Daniel-Johnson Dam, formerly known as Manic-5, is a multiple-arch buttress dam on the Manicouagan River that creates the annular Manicouagan Reservoir. The dam is composed of 14 buttresses and 13 arches and is 214 km north of Baie-Comeau in Quebec, Canada. The dam was constructed between 1959 and 1970 for the purpose of hydroelectric power production and supplies water to the Manic-5 and Manic-5-PA power houses with a combined capacity of 2,596 MW. The dam is 214 m tall, 1,314 m long and contains 2,200,000 m3 of concrete, making it the largest dam of its type in the world.The dam was named after Daniel Johnson, Sr., the 20th Premier of Quebec who was responsible for starting the project while being minister in Duplessis' government. Johnson died on 26 September 1968, on the day he was to preside over the scheduled inauguration of the dam. The facility is owned and operated by Hydro-Québec.BackgroundDuring the summers of 1919 and 1920, hydrological studies were conducted on the Manicouagan and Outardes rivers, flowing into the St. Lawrence near the town of Baie-Comeau. The combined flow was then estimated at 40 million cubic meters, making it one of the largest hydrological systems in Canada. Although harnessing of this potential was considered interesting, its distance from major load centers and the lack of roads in the area were identified as major drawbacks. In addition, building dams in the wilderness was considered too costly.
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  • As we were driving the trans Labrador highway in the fall we missed out on the guided tours. However the sight is still incredible. we stopped and spent over an hour looking around the area. This is a...  more »
  • The Manic 5 is an incredible experience. You have read the other reviews and I agree with all of the positive things said about visiting here. If you are tenting or Rv'ing there is camping available 1...  more »
  • Trip wonderful and quite surprising I n never saw a dam close so I can say I'm spoiled me... the only regret c is that we arrived on 1 September and guided tours closed August 31... a shame... they should close after labor day... but hey...
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