Floods threaten Dresden as Prague river levels fall Published duration 4 June 2013

media caption The BBC's Christian Fraser reports from the Czech Republic, where the waters are rising at 15cm an hour

Cities in southern and eastern Germany are on high alert as heavy floodwaters swell rivers including the Elbe.

In Halle, an appeal has gone out to residents to help reinforce flood defences while Dresden is preparing for water levels 5m higher than normal.

German Chancellor Angela Merkel has promised 100m euros (£78m; $130m) in emergency aid for flood-hit areas.

Meanwhile, river levels in Prague have begun to fall, say the Czech authorities, as floodwaters move north.

Overnight, flood barriers on the River Vltava in the south of the country were raised, releasing a torrent of water.

However, Prague's flood defences appear to have held, and the risk of severe flooding in the city centre seems to be receding, says the BBC's correspondent there, Rob Cameron.

Water levels rise

The city of Regensburg has declared a state of emergency, while in the state of Saxony - which includes Dresden - officials were warning of higher water levels than during the record floods of 2002.

The bodies of two people, a man and a woman, were found separately around the southern town of Guenzburg. At least seven people have died in the Czech Republic and two in Austria after days of heavy rain.

Hungary has also declared a state of emergency. Floodwaters on the Danube are expected to peak there on Thursday.

Germany has drafted in the army to help with flood defences.

In the Bavarian town of Passau, floodwaters reached a level not seen since the 16th Century, but have now begun to recede.

Chancellor Angela Merkel visited the worst affected regions on Tuesday, flying over Bavaria, Saxony and Thuringia by helicopter.

She promised 100m euros in immediate aid, of which 50m euros will go to Bavaria.

In the Czech Republic, a nationwide state of emergency is still in force. Water levels are expected to peak in the north later on Tuesday.

Around 3,000 people have been forced to leave their homes across the west of the country.

As a precaution, Prague's metro system and central sewage treatment plant were closed, metal flood defences were erected and sandbags built up along the banks of the Vltava.

The Charles Bridge - normally packed with tourists - was shut and tigers at the city's zoo were tranquilised and moved out of an enclosure thought to be at risk.

A system of nine dams called the Vltava Cascade was found to be dangerously full, and the floodgates were opened at 20:00 local time (18:00 GMT) on Monday night.

image caption This image shows the impact of flooding on the Czech village of Stare Ouhoulice

image copyright Google, AP image caption Aerial view of the swollen Vltava river, which swamped the village of Mirejovice, north of Prague

image copyright Reuters image caption The German army is helping to clear up the mess left behind as floodwaters recede from Passau

image copyright AFP image caption The city of Dresden, which was badly damaged by flooding in 2002, has reinforced its defences as water levels on the River Elbe rise

image copyright AP image caption The River Vltava has burst its banks in the area around Melnik, 40km (25 miles) north of Prague

image copyright Reuters image caption The River Danube is also carrying floodwaters: the village of Marbach, 90km west of Vienna, has been partially submerged

North of Prague, further downstream, the River Elbe is rising to levels approaching those seen in 2002, the last time Europe experienced similar floods.

Seventeen people were killed in the Czech Republic in August 2002 and the cost of the damage across the continent was estimated at 20bn euros (£17bn).

Main roads in many areas of central Europe have been closed and rail services cut. Thousands of homes are without power.

In Austria, the meteorological service said two months of rain had fallen in just two days.

Floods across Central Europe

Austria Two people have died and several are missing in the west of the country

Two people have died and several are missing in the west of the country Germany Two people are dead and evacuations have taken place in Saxony, while more rain is forecast in Bavaria

Two people are dead and evacuations have taken place in Saxony, while more rain is forecast in Bavaria Czech Republic Seven people have died and Prague is on high alert. Troops have been called in to erect flood defences

One man was found dead near Salzburg and another in the western state of Vorarlberg. Three people remain missing.

More than 300 people were moved from their homes in Salzburg and the neighbouring Tyrol as the army worked with the civil authorities to clear landslides and make roads passable. Parts of the Pinzgau region have been declared a disaster zone.

'Extremely dramatic'

media caption The BBC's Stephen Evans talks to a rescue worker in Passau, Germany

In Germany, the army said it had sent 1,760 soldiers to southern and eastern areas to help local authorities reinforce flood defences.

Towns and cities in Saxony, Thuringia and Baden-Wuerttemberg have also been inundated.

Shipping was halted on parts of the Danube and Rhine rivers in Germany, and the entire length of the Danube in Austria. The rivers are used heavily to transport commodities such as grain and coal.

The European Union has said it stands ready to help the three countries as they tackle the devastating floods.

Slovakia's Prime Minister Robert Fico also warned that there was a risk of flooding as water moved down the Danube, which flows through Bratislava.

"We are getting bad news from Germany and Austria. We have to do all we can to protect... the capital," he said.