Record flood waters continue to rise in Russia's Urals

Flood waters were rising in two cities in Russia's Ural mountains on Sunday after Europe's third longest river burst through a dam, flooding at least 6,000 homes and forcing thousands of people to flee with just their pets and a few belongings.

A string of Russian regions in the Ural Mountains and Siberia, alongside parts of neighbouring Kazakhstan have been hit in recent days by some of the worst floods in decades.

The Ural River, which rises in the Ural Mountains and flows into the Caspian Sea, swelled several metres in just hours on Friday due to melt water, bursting through a dam embankment in the city of Orsk, 1,800 km east of Moscow.

More than 4,000 people were evacuated as swathes of the city of 230,000 were flooded. 

President Vladimir Putin ordered Emergencies Minister Alexander Kurenkov to fly to the region. The Kremlin said on Sunday that flooding was now also inevitable in the Urals region of Kurgan and the Siberian region of Tyumen.

Putin had spoken to the governors of the regions by telephone, the Kremlin said.

The Orenburg region's governor, Denis Pasler, said the floods were the worst to hit the region since records began.

He said that flooding had been recorded along the entire course of the 2,400 km Ural River, which flows through Orenburg region and then through Kazakhstan.

Russian media cited Orenburg region authorities as estimating the cost of flood damage locally as around 21 billion roubles ($227 million), and saying that flood waters would dissipate only after April 20.

In Kazakhstan, President Kassym-Jomart Tokayev said on Saturday the floods were his country's largest natural disaster in terms of scale and impact for 80 years.