The "Commissioners Dam" belongs to the Government of Quebec and is found at the outlet of Lac des Commissaires, which is the main source supplying the Ouiatchouan River.

[3] In 1828, the land surveyor, Joseph Bouchette, assigned the toponym "Lac des Commissaires", in honor of Commissioners Andrew and David Stuart, responsible for an expedition to explore the Saguenay territory.

In his Journal of 1732, the surveyor Joseph-Laurent Normandin designates this lake Eskaskouakama, that is to say a word of the Montagnais language which he translates as follows: wood".

In 1890, the land surveyor Elzéar Laberge, in his report on the township of Crespieul, used the toponym "Lac des Commissaires" to identify this body of water.

[4] The toponym "Lac des Commissaires" was registered on December 5, 1968, in the Place Names Bank of the Commission de toponymie du Québec.