The Souris River is a river located in the northern United States and southern Canada. It flows approximately 440 miles (710 kilometers) through North Dakota, South Dakota, and Manitoba, eventually joining the Assiniboine River. The river is known for its scenic landscapes and diverse ecosystems. The Souris River is significant for local agriculture and wildlife. It provides water for irrigation and supports various species of fish and birds. The river also features recreational opportunities, such as fishing, kayaking, and hiking along its banks, making it an important natural resource for the communities it traverses.