The Lac de Tolla is a reservoir in the Corse-du-Sud department of France on the island of Corsica.

[4] Between 3 November and 20 December 90,000,000 cubic metres (3.2×109 cu ft) of water entered the reservoir, three times its capacity.

Typically the reservoir would receive five times its capacity of water each year.

On 20 December 2019 the Fabien storm caused the dam to overflow, but the structure was not damaged.

When producing the maximum amount of electricity the dam releases 11 cubic metres (390 cu ft) of water per second.