Milk River

The Milk River flows from Montana through southern Alberta, then turns south and re-enters Montana, where it joins the Missouri River.

Connect

Missouri River: The Missouri River is a major North American river that joins the Mississippi River near St. Louis. The Milk River ends in the Missouri, linking its cross-border course to the continent’s largest river system.
Milk River (Alberta): Milk River is a town in southern Alberta named for the nearby Milk River. The river passes the town during its northward crossing of Alberta.
Irrigation in Montana: Irrigation in Montana supplements rainfall to grow crops and sustain agriculture in the state’s dry regions. Water from the Milk River Project irrigates farmland along the river’s Montana reach.
International Joint Commission: The International Joint Commission is a Canada–United States body that helps resolve and prevent disputes over shared waters. Its work provides a framework for managing water shared by the two countries in the Milk River basin.
Writing-on-Stone Provincial Park: Writing-on-Stone Provincial Park is a protected area in southern Alberta known for sandstone formations and Indigenous rock art. The park preserves a distinctive landscape in the Milk River valley.
St. Mary River (Alberta–Montana): The St. Mary River rises in Montana, flows north into Alberta, and joins the Oldman River. The St. Mary River and Milk River are connected by an irrigation diversion that transfers water between their basins.
Milk River Ridge: Milk River Ridge is a highland region in southern Alberta near the Milk River’s course. The ridge forms part of the terrain shaping the river’s southern Alberta landscape.
Havre, Montana: Havre is a city in north-central Montana on the Hi-Line railway corridor. The Milk River flows through Havre, where it is part of the local landscape and water system.
Boundary Waters Treaty of 1909: The Boundary Waters Treaty of 1909 sets principles for Canada–United States cooperation over boundary waters. The treaty’s rules apply to shared waters connected with the Milk River.
Milk River, Montana: Milk River is an unincorporated community in Montana named for the nearby river. The community lies along the river’s eastward-flowing Montana section.