One of a dozen or so significant tributaries of the Ottawa River, it has a length of  and a drainage area of , and runs in a general south-eastern direction from its headwaters in Lac au Barrage (situated in La Vérendrye Wildlife Reserve) to the Ottawa River at Fort-Coulonge.
One of a dozen or so significant tributaries of the Ottawa River, it has a length of  and a drainage area of , and runs in a general south-eastern direction from its headwaters in Lac au Barrage (situated in La Vérendrye Wildlife Reserve) to the Ottawa River at Fort-Coulonge.