Its watershed is mostly part of the Batiscanie, except the southwest area, the limit of Champlain and of Saint-Luc-de-Vincennes. The municipality is crossed by five rivers: Batiscan River, River des Chutes (River of the falls), Rivière-au-Lard (Bacon River), Rivière-aux-Fourches (River of the forks), and Rivière La Tortue (Turtle River). The route of the "Turtle River" enter into Saint-Narcisse by the northwest end (row "Côte St-Pierre - Northeast area"), where it crosses four lots on . Then the river continues to flow in Saint-Séverin to go jump into the Rivière des Envies (River cravings).
