North Fork Flathead

Watershed Hydrology

The North Fork Flathead watershed (HUC 17010206) is located in northwestern Montana and covers approximately 2,432 square miles. The hydrology of the area is dominated by the Flathead River and its tributaries, which provide important habitat for fish and wildlife. The area is known for its deep snowpack, with some areas receiving up to 300 inches of snowfall annually, which contributes to the river's flow and the area's scenic beauty. The surface water in the watershed includes several large lakes and reservoirs, including Hungry Horse Reservoir, which serves as a major source of hydroelectric power for the region. The reservoir also plays an important role in flood control and irrigation. The watershed is home to a wide variety of plant and animal species, including grizzly bears, wolves, and bald eagles. Over the last several decades, the area has experienced warming temperatures and changes in precipitation patterns, which have led to shifts in vegetation and potential impacts on water resources in the region.


Surface Flows

North Fork Flathead Watershed

Snowpack Depths

North Fork Flathead Watershed

Dams & Reservoirs

North Fork Flathead Watershed

Groundwater Levels

North Fork Flathead Watershed

North Fork Flathead Rivers

Rivers of the Watershed