Articles | Volume 10, issue 6
Nat. Hazards Earth Syst. Sci., 10, 1171–1181, 2010

Special issue: Risk management of extreme flood events

Nat. Hazards Earth Syst. Sci., 10, 1171–1181, 2010

  10 Jun 2010

10 Jun 2010

Operational flood management under large-scale extreme conditions, using the example of the Middle Elbe

A. Kron1, F. Nestmann1, I. Schlüter2, G. Schädler2, C. Kottmeier2, M. Helms1, R. Mikovec1, J. Ihringer1, M. Musall1, P. Oberle1, U. Saucke6,*, A. Bieberstein3, J. Daňhelka4, and J. Krejčí5 A. Kron et al.
  • 1Institute for Water and Water Resources Management, KIT, Karlsruhe, Germany
  • 2Institute for Meteorology and Climate Research, KIT, Karlsruhe, Germany
  • 3Institute of Soil Mechanics and Rock Mechanics, KIT, Karlsruhe, Germany
  • 4Czech Hydrometeorological Institute, Prague, Czech Republic
  • 5AquaLogic Consulting Ltd., Prague, Czech Republic
  • 6Dr.-Ing. Ulrich Saucke, Consulting Engineer for Geotechnics, Kronberg, Germany
  • *formerly at: Institute of Soil Mechanics and Rock Mechanics, KIT, Karlsruhe, Germany

Abstract. In addition to precautionary or technical flood protection measures, short-term strategies of the operational management, i.e. the initiation and co-ordination of preventive measures during and/or before a flood event are crucially for the reduction of the flood damages. This applies especially for extreme flood events. These events are rare, but may cause a protection measure to be overtopped or even to fail and be destroyed. In such extreme cases, reliable decisions must be made and emergency measures need to be carried out to prevent even larger damages from occurring.

Based on improved methods for meteorological and hydrological modelling a range of (physically based) extreme flood scenarios can be derived from historical events by modification of air temperature and humidity, shifting of weather fields and recombination of flood relevant event characteristics. By coupling the large scale models with hydraulic and geotechnical models, the whole flood-process-chain can be analysed right down to the local scale. With the developed GIS-based tools for hydraulic modelling FlowGIS and the Dike-Information-System, (IS-dikes) it is possible to quantify the endangering shortly before or even during a flood event, so the decision makers can evaluate possible options for action in operational mode.