The Flathead River is a major river located in northwestern Montana, USA. It flows approximately 158 miles and is known for its stunning scenery, including the surrounding Glacier National Park. The river is formed by the confluence of the North Fork and South Fork of the Flathead River. The Flathead River is popular for various recreational activities, such as fishing, kayaking, and rafting. Its clear waters are home to diverse wildlife, including trout and bald eagles. The river ultimately joins the Columbia River system, contributing to the region's rich ecosystem.