evidence: Destruction of dam 'another blow to the well-being of children of Ukraine,' UNICEF says [...] Video: Dam in Ukraine destroyed, unleashing massive surge of water [...] Russian-installed officials said evacuations near the dam have begun and that waters would reach critical levels within hours. Ukrainian officials urged residents of at least 10 villages and parts of the city of Kherson to gather essential documents and pets, turn off appliances and flee to safety.