We have compiled the top 10 emergency discharges from different dams! Biggest Dam! Largest Dam! Emergency drain ladies is due to the overflow of the rivers and lakes of water. Water from the dam breaks at very high speeds (millions of cubic meters per hour). If perelёtsya water through the dam, it can cause very great harm to the base of the dam. Accidents (crash) at dams yuyvayut very rarely. (translate.