"More than 10,000 residential buildings flooded in Urals, Volga region and Western Siberia".
This was reported by the Ministry of Emergencies of Russia.
Emergency services are evacuating towns affected by rising rivers, AFP reported.
Russia has declared a federal state of emergency in Orenburg Oblast, where the Ural River has flooded much of the city of Orsk and is now reaching dangerous levels in the main city of Orenburg.
"In the territories of the Siberian, Privolzhsky (Volga region) and the central federal region, an increase in air temperature, active melting of snow and overflowing of rivers is predicted," the ministry said in a statement.
Russia has already evacuated thousands of people, mostly in the Orenburg region near Kazakhstan.
Much of the city of Orsk is flooded after heavy rain burst a nearby dam.
The city's mayor, Sergey Salmin, said the flooding was expected to be "unprecedented" and warned of forced evacuations.
Russia's weather service Roshydromet said it expected flooding in Orenburg to peak on March 10 and that several of the city's neighborhoods would be affected.
Authorities also warned of an "inevitable" rise in water levels in the Siberian regions of Tyumen and Kurgan, with the large Tobol River expected to rise.
Emergency services in Kurgan, a city of about 300,000 people located near the border with Kazakhstan, said they had begun a "preemptive evacuation" and evacuated 571 people.
The Kremlin has ordered authorities in Kurgan and Tyumen to be on alert, citing "natural anomalies"./BGNES