St. Mary River (Alberta–Montana)

The Saint Mary River is a cross-border tributary of the Oldman River, itself a tributary of the South Saskatchewan River. The Saint Mary together with the Belly River and Waterton River drains a small portion of Montana, in the United States, to the Hudson Bay watershed in Canada. It passes near the town of Cardston, Alberta, and the city of Lethbridge, Alberta.

St. Mary River (Alberta–Montana)

The Saint Mary River is a cross-border tributary of the Oldman River, itself a tributary of the South Saskatchewan River. The Saint Mary together with the Belly River and Waterton River drains a small portion of Montana, in the United States, to the Hudson Bay watershed in Canada. It passes near the town of Cardston, Alberta, and the city of Lethbridge, Alberta.