The village Hřensko is located between the rocks and was only accessible by water or by air. Using the UAV made it possible to carry out low flights in this terrain, which would have been impossible with a classic helicopter. In addition to the UAV, Geodis monitored the floods by classic aircrafts and a mobile mapping system to obtain comprehensive data bases for emergency crews, administrator rivers, regions and municipalities.
In late spring 2013, central Europe was worse hit by flooding that has spread across a large area covering parts of Czech Republic, Germany, Austria and Switzerland following heavy rainfall. In Czech Republic, the country was facing the most severe flooding since 2002. Authorities closed the famous Charles Bridge in Prague, where the Vltava River was flowing at 10 times its normal volume.