The Waterton River is a river located in the province of Alberta, Canada. It flows through the picturesque Waterton Lakes National Park, which is known for its stunning landscapes and diverse wildlife. The river is a tributary of the Oldman River, contributing to the region's water system. The Waterton River is popular for various recreational activities, including fishing, kayaking, and hiking along its banks. Its clear waters and scenic surroundings attract visitors year-round, making it an essential part of the natural beauty found in the Canadian Rockies.