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Upstream hydroelectric installations may suddenly release large water masses putting in danger anybody
in the bed of the watercourse or close to it.
Before After
Normal situation A few seconds later: a flood wave with an immediate impact downstream, at times for many kilometres, in a normally dry torrent.  DANGER !!!

In watercourses signposted with this panel, there is a danger of a sudden rise in the water level

Even in fine weather

Day and night

 For your own safety :

  • Don't stay long in the river bed
  • Don't do any activities close by
  • In case of accident: call 144
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© 2016 Valais Association of Electricity Producers (AVPEE)