WYOMING RESERVOIR REPORT

Last Updated: December 25, 2025

Wyoming's key reservoirs are exhibiting varied conditions as of the latest observations dated December 25, 2025. The Big Sandy Reservoir near Farson is nearly at its average water surface elevation, with a minor deviation of just 3.17 feet below the norm. However, the storage levels in other reservoirs are more concerning. Fontenelle Reservoir, a significant water storage system, is currently holding 190,917 acre-feet of water, which is approximately 93% of its average capacity. The Big Sandy Reservoir, not to be confused with the aforementioned elevation observation site, is at a more alarming level with only 78% of its typical storage. Meeks Cabin Reservoir and Eden Reservoir are also well below their average storage capacities, at 36% and 36% respectively. These abnormal storage readings may be indicative of broader environmental issues, including reduced snowpack and diminished river flows impacting the region.

Recent warnings of extreme fire threats with possible 100 mph wind gusts in Wyoming suggest that dry conditions may be exacerbating reservoir deficits. The state, known for its natural beauty and outdoor attractions, appears to be facing environmental stressors that could affect water storage and management. The lack of expert hiking requirements to access Wyoming's scenic views, as reported, might attract more visitors, but the safety of small communities in the Rockies, considered some of the safest according to WorldAtlas, could be compromised if water scarcity issues persist and fire risks materialize. The dataset provides a snapshot that underscores the need for careful monitoring of Wyoming's dams and reservoirs, especially in light of extreme weather patterns and their potential impact on water resources and community safety.

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.