If the inflow in a particular situation exceeds the dam plant’s releasing capacity the water level will rise in the reservoir. If the reservoir rises above the dam’s limit, exceeding its dimensions, it could lead to dam failure. Adaptation measures for hydroelectric dams include reconstruction measures as well as operating and water conservation measures.
Other climate indicators such as wind, torrential rain, temperature changes, ground frost and snow affect dam safety, to a certain extent, but not as much as extreme flows.
Challenging weather conditions
During high flows, issues related to ice problems, wind generated waves and wind misalignment of the reservoir can worsen an already difficult situation. Therefore dam plants need to be dimensioned to withstand any possible combinations of external loads safely.
In addition to the direct effects of dam plants, conditions to monitor and remotely control the plant need to be taken into account as well as how to access the facility during severe weather conditions. Torrential rain or storms can lead to aggravating circumstances.