inundation modelling as well as on high resolution topographic and land use database.The flow model is based on the shallow-water equations, solved by means of a finite volume scheme on multiblock structured grids. Using highly accurate laser altimetry, the simulations are performed with a typical grid spacing of 2m, which is fine enough to represent the flow at the scale of individual buildings.Consequently, the outcomes of hydraulic modelling constitute suitable inputs for the subsequent exposure analysis, performed at a micro-scale using detailed land use maps and geographic database. Eventually, the procedure incorporates social flood impact analysis and evaluation of direct economic damage to residential buildings.Besides detailing the characteristics and performance of the hydraulic model, the paper describes the flow of data within the overall flood risk analysis procedure and demonstrates its applicability by means of a case study, for which two different flood protection measures were evaluated.

Within the global framework of the climate change, according to most Regional Climate Models the maximum peak discharges in river will increase in importance and frequency. Therefore the people will have to face worst inundation conditions. In order to protect themselves from the increasing flood risk, the communities have to draw up suitable flood protection measures. The selection and the evaluation among the different possible flood mitigation measures requires developing decision-support system (DSS). This system has to take into consideration parameters such as hydraulic, economic, social or environmental. This paper focuses on the integration between two components of the DSS, namely the evaluation of the economic impacts of floods and the hydrodynamic modelling. The hydraulic simulations are conducted by means of WOLF 2D flow modelling system and provide as an output high resolution flood maps detailing the distribution of water depth and flow velocity in the floodplains. The integration is ensured by the use of very accurate geographic databases and an automated procedure which makes the most of geomatic methods. The paper details the application of the integrated assessment procedure for a case study along the river Ourthe located in the Meuse basin (Belgium). Moreover, possibilities of validation of the economic damage evaluation procedure are investigated by comparing computation results with real damage data recorded by the Belgian Disaster Fund after several major flood events (2003, 2002, 1995, and 1993).

In order to protect our societies from damaging impacts of climate change (floods, heat waves, droughts etc), the most cost-effective adaptation measures must be selected among a wide range of options (including structural and nonstructural protection measures). The Belgian national project "ADAPT" aims to provide guidance for this choice by developing a decision-support tool for the selection of protection measures against increased risk resulting from climate change, and more specifically from floods. This tool is based on a combination of cost-benefit analysis (CBA) and multicriteria analysis (MA), taking into consideration hydraulic, economic, social and ecological indicators. In order to demonstrate its efficiency, the method is applied in the two main Belgian river basins (Meuse and Scheldt).Within this global framework, the present paper covers the description of the hydraulic modelling component and the economic approach, focusing on their interactions, for the case of the Meuse Basin (river Ourthe). The hydraulic simulations are performed with the two-dimensional numerical model WOLF 2D, which is developed at the University of Liege. High resolution Digital Elevation Models are exploited, enabling the representation of streets, buildings and parcels individually. In parallel, for past flood events, a relationship is established between simulated local water depths and actual damage costs, enabling the development and validation of suitable damage functions.

-The paper presents a consistent micro-scale flood risk analysis procedure, relying on detailed 2D inundation modelling as well as on high resolution topographic and land use database. The flow model is based on the shallowwater equations, solved by means of a finite volume scheme on multiblock structured grids. Using highly accurate laser altimetry, the simulations are performed with a typical grid spacing of 2m, which is fine enough to represent the flow at the scale of individual buildings. The methodology is first described, both in terms of hydraulic modelling and evaluation of people and assets vulnerability. The analysis scale of the procedure enables its development following an object-oriented approach. Finally, the applicability of the procedure is demonstrated through a case study for which three different protection measures are evaluated. Detailed analysis of these measures highlights significantly different influences from those measures on the risk curves.