WYOMING RESERVOIR REPORT

Last Updated: December 5, 2025

Wyoming has numerous reservoirs and dams that play a critical role in supplying water for irrigation, municipal, and industrial purposes. Some of the major reservoirs in the state include Boysen, Flaming Gorge, Glendo, and Pathfinder. These reservoirs rely on streamflow from various sources, including the North Platte, Green, and Snake Rivers. Snowpack and mountain precipitation are vital to the water supply in these areas, with most reservoirs being fed by snowmelt during the spring and summer months. In recent years, Wyoming has experienced drought conditions, which have affected the water levels in its reservoirs. For example, in 2018, the Flaming Gorge Reservoir recorded its lowest level in over 50 years. Seasonal trends also play a role in the hydrology of the area, with water levels typically peaking in early summer and gradually decreasing throughout the fall and winter months. Despite these challenges, Wyoming's reservoirs and dams continue to provide essential water resources for the state's residents and industries.

Wyoming has numerous reservoirs and dams that play a critical role in supplying water for irrigation, municipal, and industrial purposes. Some of the major reservoirs in the state include Boysen, Flaming Gorge, Glendo, and Pathfinder. These reservoirs rely on streamflow from various sources, including the North Platte, Green, and Snake Rivers. Snowpack and mountain precipitation are vital to the water supply in these areas, with most reservoirs being fed by snowmelt during the spring and summer months.
In recent years, Wyoming has experienced drought conditions, which have affected the water levels in its reservoirs. For example, in 2018, the Flaming Gorge Reservoir recorded its lowest level in over 50 years. Seasonal trends also play a role in the hydrology of the area, with water levels typically peaking in early summer and gradually decreasing throughout the fall and winter months. Despite these challenges, Wyoming's reservoirs and dams continue to provide essential water resources for the state's residents and industries.