ALABAMA RESERVOIR REPORT

Last Updated: March 7, 2026

Across the nation, dam and reservoir levels exhibit a wide range of conditions, reflecting the diverse climatological and hydrological landscapes that characterize the United States. While some regions are experiencing surpluses, with reservoirs reaching or even exceeding average storage levels, other areas are facing significant deficits, indicative of persistent drought conditions. For instance, Lake Mead in Nevada and Lake Powell in Arizona, both vital reservoirs in the Colorado River Basin, are alarmingly below their average storage levels. Conversely, reservoirs such as Whiskeytown Dam in California and Lake Almanor are holding more water than usual for this time of year.

Investigations into the causes of these abnormal conditions suggest a complex interplay of factors including below-average snowpack, reduced river flows, and prolonged dry spells in some areas, against a backdrop of historical overuse in others. On the other end of the spectrum, wetter-than-average seasons have benefited certain watersheds, leading to increased reservoir storage in a select few. The data highlights the importance of integrated water management approaches and the necessity of adaptive strategies to cope with the variations, ensuring water security for communities, agriculture, and ecosystems. The observed trends underscore the need for continued monitoring and research to understand the dynamics of reservoir and dam levels in relation to changing climatic patterns.

Alabama has numerous reservoirs and dams, with the largest being the Guntersville Reservoir, the Wheeler Reservoir, and the Wilson Reservoir. These reservoirs are fed by several rivers, including the Tennessee River, the Black Warrior River, and the Mobile River. Snowpack and mountains are not relevant to the hydrology in Alabama, as the state has a humid subtropical climate. Drought conditions and seasonal trends vary across the state. In recent years, some areas have experienced drought conditions, while others have seen heavy rainfall and flooding. The Tennessee River Valley has experienced record flooding in the past, with the most recent significant event occurring in 2019. Overall, however, the state's reservoirs and dams provide a reliable source of water for both residential and industrial use.

Alabama has numerous reservoirs and dams, with the largest being the Guntersville Reservoir, the Wheeler Reservoir, and the Wilson Reservoir. These reservoirs are fed by several rivers, including the Tennessee River, the Black Warrior River, and the Mobile River. Snowpack and mountains are not relevant to the hydrology in Alabama, as the state has a humid subtropical climate.

Drought conditions and seasonal trends vary across the state. In recent years, some areas have experienced drought conditions, while others have seen heavy rainfall and flooding. The Tennessee River Valley has experienced record flooding in the past, with the most recent significant event occurring in 2019. Overall, however, the state's reservoirs and dams provide a reliable source of water for both residential and industrial use.