Major dam damaged in Russia-controlled Ukraine, causing widespread flooding fears.

In a region of southern Ukraine under Russian control, a sizable dam and power plant were damaged early on Tuesday, resulting in significant flooding and endangering thousands of homes.

It wasn't immediately obvious what had destroyed everything. The incident, which occurred as a long-awaited Ukrainian counteroffensive appears to have started, was blamed on both sides.

President Volodymyr Zelenskyy posted video of water from the Nova Kakhovka dam flowing toward Kherson, where hundreds of thousands of people reside, on his official Telegram channel.

According to state media, Nova Kakhovka's mayor, who was appointed by Russia, claimed that the town was submerged.

According to Ukrainian officials, evacuations are in progress.

Although it is situated upstream from the dam and is also situated in Russian-controlled territory, the Zaporizhzhia Nuclear Power Plant is close by.

About 18 million cubic meters (4.8 billion gallons) of water are kept back by the Kakhovka dam.

Hoover Dam created Lake Mead, a reservoir with a maximum storage capacity of 9.3 trillion gallons.