The Battures de Beauport is a significant tidal flat and estuarine environment situated along the north shore of the St. Lawrence River, just east of Quebec City. This expansive area features extensive mud and sand flats that can stretch up to 800 meters wide at low tide, interspersed with scirpus (bulrush) marshes. The site encompasses the Beauport flats and the adjacent Île d'Orléans channel, characterized by turbulent waters with powerful currents and significant tidal movement. The shoreline is heavily urbanized, bordered by highways and railways, yet it provides a crucial habitat within the river's dynamic brackish and saline environment.