The Middle Fork Flathead River is a 92-mile (148 km) river in western Montana in the United States, forming the southwestern boundary of Glacier National Park. Its drainage basin lies to the east of the South Fork Flathead River and the Hungry Horse Reservoir. Towns along the river include West Glacier, Nyack, Pinnacle, Essex, and Nimrod.
The river's headwaters lie in the Bob Marshall Wilderness at the confluence of two small streams, Strawberry Creek and Bowl Creek. From there, it runs north, receiving many tributaries from glacial valleys to the east and west, most of them inside Glacier ...
Click any point for details. Sections without stored geometry are drawn as straight put-in → take-out lines — actual courses follow the river.