Neue Ansätze im integrierten Hochwassermanagement: Floodplain Evaluation Matrix FEM, flussmorphologischer Raumbedarf FMRB und räumlich differenziertes Vegetationsmanagement VeMaFLOOD

Abstract

Summary: This paper presents three new approaches within the integrated flood management, which have been developed or optimized in FloodRisk II. (I) The Floodplain Evaluation Matrix (FEM) allows an objective evaluation of inundation areas within a river basin and/or river reach from hydrological/hydraulic, ecological and sociological viewpoint. (II) The minimum river morphological space demand is to be seen especially after large floods and was defined, based on the analysis of the recent extreme floods, as three to sevenfold the existing river bed width (measured from the river banks), where no buildings or other higher value usages are allowed. If possible, the potential river morphological space demand, defined by the potential river floodplain system, should be aimed for. (III) The spatially variable vegetation management suggests a differentiation of the river into vegetation dynamic zones, transition zones and sensitive zones with different widths and densities of the vegetation, in order to improve the retention (hydrological) and minimize the water level (hydraulic). © 2010 Springer-Verlag.