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Flood risk threatens Swiss valley after glacier destroys village

The lake of water that was trapped behind the glacial debris which buried an entire village in southern Switzerland and blocked a river this week, has caused fears of floods in the Alpine Valley.

On Wednesday, millions of cubic metres of ice and rock, as well as mud, crashed down the mountain, flooding Blatten. Later, the few houses that were still intact were flooded.

After a part of the mountain that lies behind the Birch Glacier started to crumble, 300 village residents were already evacuated. The search for a 64-year old man has been suspended due to difficult conditions.

The flooding increased on Thursday, as a mound of debris measuring almost 2 km (1,2 miles) wide clogged up the River Lonza. A lake formed among the wreckage. This caused fears that the morass might dislodge, leading to more evacuations.

Local authorities warned residents of Gampel and Steg - two neighbouring, lower-lying communities a few kilometres downstream along the Lonza – to be prepared for an emergency evacuation.

Swiss officials reported that some water from the accumulation had found its way to the river by Friday afternoon. It was able to run through the debris, and back into the river, without increasing the level of danger.

Local official Christian Studer said at a press briefing that authorities are sticking to the safety measures implemented on Thursday, and they do not expect things to get worse.

Once conditions permit, the army will be ready with heavy equipment such as water pumps, diggers, and other heavy machinery to relieve the pressure on the Lonza River, which is a tributary to the Rhone.

Scientists suspect that the event is a dramatic illustration of climate change's impact in the Alps.

Swiss Insurance Association stated that the damage was likely to be several hundred millions Swiss Francs and it is too early to give a more accurate estimate. In a press release, the Swiss Insurance Association said it was not clear how many homes were insured in Blatten. (Reporting and editing by Lincoln Feast, Gareth Jones, and Oliver Hirt)

(source: Reuters)