Big

Watershed Hydrology

HUC 10260007 is a large watershed that covers 7,158 square miles in northwestern Montana. The watershed is known for its rugged mountains, deep valleys, and abundant wildlife. The hydrology of the area is dominated by snowmelt from the mountains, which contributes to the many rivers and streams that flow through the region. The snowpack in the watershed is highly variable, with some areas receiving up to 300 inches of snow per year. The surface water in the watershed is used for a variety of purposes, including irrigation, recreation, and hydroelectric power generation. Reservoirs in the watershed store water for use during times of low flow. The watershed experiences extreme weather changes, including long, cold winters and hot summers. There has been a trend of decreasing snowpack and earlier snowmelt in recent years, which can have significant impacts on the ecosystem and water resources.


Surface Flows

Big Watershed

Snowpack Depths

Big Watershed

Dams & Reservoirs

Big Watershed

Groundwater Levels

Big Watershed

Big Rivers

Rivers of the Watershed