Ouasimesca

The Ouasimesca is a forest river flowing south to the Mistassini, north of Lac Saint-Jean. Rapids and falls interrupt its course, and the Micosas joins it from the west. The larger Mistassini leads towards the lake, carrying the waters of a broad northern basin. Eighteenth-century maps by Father Laure and other French cartographers showed the Mistassini as the Rivière aux Sables, a route into the country beyond the lake.