Lower Flathead

Watershed Hydrology

The Lower Flathead Watershed (HUC 17010212) encompasses approximately 2,130 square miles in northwestern Montana. It is characterized by a diverse hydrology with many streams and rivers, as well as several large reservoirs. The watershed is heavily influenced by snowpack, with winter snowfall providing much of the surface water during the spring and summer months. The Flathead River, which flows through the watershed, is known for its scenic beauty and recreational opportunities. The watershed is also home to several interesting climatic facts and trends. For example, the area experiences a relatively high frequency of chinook winds, which can cause rapid snowmelt and flooding. Additionally, the watershed is located near the intersection of several major climatic zones, including the Pacific Northwest, the Northern Rockies, and the Great Plains, which contributes to the region's unique climate and weather patterns. Finally, there is growing concern about the impact of climate change on the watershed, including changes in snowpack, streamflow, and water quality.


Surface Flows

Lower Flathead Watershed

Snowpack Depths

Lower Flathead Watershed

Dams & Reservoirs

Lower Flathead Watershed

Groundwater Levels

Lower Flathead Watershed

Lower Flathead Rivers

Rivers of the Watershed