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Geoinformatics-8-2009
article the latter may be determined on the basis of inundations resulting from hydrological events with different return periods and damage functions (e.g. stage-damage functions) taking different land use classifications and other specific object details into account. figure 5 depicts a schematic diagram of a stage-damage curve for a residential house. the resulting annual expected damage values are classified in this case into six classes differentiating highly affected , medium affected and little affected for settlement areas and unsettled areas . an example for such a flood risk zone map is depicted in figure 6. dr. michael haase, thorsten hens, thomas jung and dr. kaj lippert are with the department of hydroinformatics at bjornsen consulting engineers in koblenz, germany www.bjoernsen.de, e-mail: info@bjoernsen.de. the company distributes the presented arcgis toolbox and also offers training courses for applying this toolbox to create flood hazard and flood risk maps. also have a look at: kalypso.sourceforge.net the intergovernmental panel on climate change (ipcc): www.ipcc.ch european environmental agency (eea): www.eea.europa.eu the excimap handbook on good practice on flood mapping in europe and atlas of flood maps material is accessible at: http://ec.europa.eu/environment/water/flood_risk/flood_atlas/index.htm. kalypso: http://kalypso.sourceforge.net geoinformatics issue march 2009: figure 6. example of a flood risk zone map. the toolbox has been applied in numerous projects and has proven to be a very valuable tool for efficiently generating flood hazard maps. among others, the toolbox has been employed in projects funded or co-funded by the european union such as in the safer (strategies and actions for flood emergency risk management) project and the timis (transnational internet map information system) project. the latter being set up as a contribution to a uniform policy of the european union for flood protection with the intention of being used as a prototype for other regions with transnational flood issues. figure 4 depicts a flood hazard map which has been generated with the toolbox. the toolbox has also been applied and proven to be of great value for generating flood hazard maps in various other projects in austria, germany and poland. flood risk mapping the eu flood directive defines flood risk as the combination of probability of a flood event and the potential adverse consequences to human health, the environment and economic activity associated with a flood event. flood risk therefore combines flood hazard with flood vulnerability. thus, flood hazard maps form an important prerequisite for determining flood risk maps. information on flood risk can be manifold covering vulnerability parameters like affected population, economic assets, human activities and environmental issues as well as potential flood damages per unit area or the annual expected damage values per unit area in [ .m-2.a-1]. http://fluidbook.microdesign.nl/geoinformatics/02-2009/. latest news? visit www.geoinformatics.com 23 december 2009
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