MASSACHUSETTS RESERVOIR REPORT

Last Updated: December 21, 2025

Massachusetts has several major reservoirs, including Quabbin Reservoir, Wachusett Reservoir, and Sudbury Reservoir. These reservoirs are fed by various streams, rivers, and creeks, including the Swift River and Ware River for Quabbin Reservoir, and the Nashua River for Wachusett Reservoir. Snowpack and mountain ranges, such as the Berkshires, play a significant role in the hydrology of these reservoirs. Record levels for these reservoirs have been seen during periods of heavy rain or snowmelt, while drought conditions have caused levels to drop. Seasonal trends typically see reservoir levels peak in the spring and summer months, as snowmelt and rainfall increase, and then gradually decrease in the fall and winter. Overall, reservoirs and dams play a crucial role in providing water to Massachusetts communities, and proper management of these resources is essential to ensure adequate water supply for both human consumption and the environment.

Massachusetts has several major reservoirs, including Quabbin Reservoir, Wachusett Reservoir, and Sudbury Reservoir. These reservoirs are fed by various streams, rivers, and creeks, including the Swift River and Ware River for Quabbin Reservoir, and the Nashua River for Wachusett Reservoir. Snowpack and mountain ranges, such as the Berkshires, play a significant role in the hydrology of these reservoirs.

Record levels for these reservoirs have been seen during periods of heavy rain or snowmelt, while drought conditions have caused levels to drop. Seasonal trends typically see reservoir levels peak in the spring and summer months, as snowmelt and rainfall increase, and then gradually decrease in the fall and winter.

Overall, reservoirs and dams play a crucial role in providing water to Massachusetts communities, and proper management of these resources is essential to ensure adequate water supply for both human consumption and the environment.