[2] The surface of the Ouiatchouan River is usually frozen from the beginning of December to the end of March, except the rapids areas; however, safe circulation on the ice is generally from mid-December to mid-March.

The Ouiatchouan River receives its water directly from the Lac des Commissaires, which flows into the Bouchette Lake.

The river continues its course to the north in the Canton of Charlevoix where it receives on the east side the waters of the Petite Rivière de la Savane.

At the end of its course, the river generates majestic falls in the heritage village of Val Jalbert, then the waters flow into a cove south of lac Saint-Jean.

The Ouiatchouan river flows mainly in wooded areas, except the last two kilometers of its route which are agricultural in nature.