THE FLOOD IN AUGUST 2002 - CONSEQUENCES ON FLOOD PROTECTION FOR THE CITY OF DRESDEN

摘要

Flooding in Dresden in August 2002 occurred in four stages caused by a sequence of two strong Adria depths within two weeks (Korndorfer 2003a). The first depth with intensive precipitation in South Bohemia in August 4th to 6th was followed by the depth whirl "ILSE" hitting the Vltava basin again and causing extreme rain fall in the eastern Ore Mountains close to Dresden. August 12th, we registered 140 to 180 mm rain within 16 hours in Dresden. At this time, the water level of the Elbe River started to rise significantly because of the run off from Moldavia basin due to the precipitation there at the beginning of the month. In Dresden, about 1 km~2 of residential area and 8.11 km~2 of business and industrial area were inundated. Four persons came to death. Residential building damages of 304 mill. ?, business building damages of 467 mill. ?, and damages of public infrastructure to the extent of 468 mill. ? had to be accounted for. The flood in August 2002 had its greatest impacts within the region of Dresden. Immediately after the flood event the City of Dresden started analysing the event, its causes, and consequences. Based on these findings, a comprehensive flood management concept was developed.