Lac-Achouakan is an unorganized territory in the Canadian province of Quebec, located in the regional county municipality of Lac-Saint-Jean-Est. It had a population of zero in the Canada 2006 Census, and covered a land area of 227.35 km<sup>2</sup>, entirely within the Laurentides Wildlife Reserve. The western boundary of the territory is Bark River (Rivière aux ÃÂcorces), while Quebec Route 169 forms the eastern boundary.
The eponymous Lake Achouakan (<small></small>) is near and drains into the Bark River. Its name comes from the Innu-aimun language and means "bridge lake".
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