Blackfoot

Watershed Hydrology

The Blackfoot Watershed (HUC 17040207) is located in western Montana and covers an area of approximately 1,880 square miles. The hydrology of the watershed is primarily influenced by the Blackfoot River, which originates from the Seeley-Swan Valley and flows downstream through various tributaries. The watershed has a diverse landscape including mountainous terrain, high elevation forests, and grasslands. The Blackfoot Watershed is known for its heavy snowpack during winter months, which contributes to the high flow rates of the river during spring runoff. The snowmelt provides important surface water for irrigation and other agricultural purposes. There are several reservoirs located within the watershed, including the Blackfoot Reservoir and the Seeley Lake. The reservoirs are used for multiple purposes such as irrigation, drinking water, and recreation. In recent years, the Blackfoot Watershed has experienced above-average temperatures and below-average snowfall, leading to lower water levels in reservoirs and concerns about drought conditions. The changing climatic conditions have also impacted the aquatic ecosystem and fish populations in the watershed.


Surface Flows

Blackfoot Watershed

Snowpack Depths

Blackfoot Watershed

Dams & Reservoirs

Blackfoot Watershed

Groundwater Levels

Blackfoot Watershed

Blackfoot Rivers

Rivers of the Watershed