The Souris River is a winding, 700-kilometre (435-mile) prairie waterway that originates in Saskatchewan, crosses into North Dakota, and then turns north into Manitoba — crossing the Canada-US boundary twice along its journey. Flowing through a broad agricultural valley, the river offers a surprisingly diverse multi-species fishery in a scenic, largely under-pressured setting. The Souris River Valley near communities like Margaret and Boissevain is characterized by open prairie landscapes, and the river itself runs through a mix of shallow riffles, current breaks, deeper holes, and scattered weed growth — all of which concentrate fish throughout the season. For anglers seeking a quieter, off-the-beaten-path experience with legitimate trophy potential, the Souris River in Manitoba delivers.