Abstract

SANCHEZ ROMAN, Luis Alejandro  and  MARTINEZ GONZALEZ, Yoel. Application of mixed weighing method to determine urban flood hazard . RIHA [online]. 2012, vol.33, n.2, pp. 71-80. ISSN 1680-0338.

Flood hazard criteria in urban areas, considering combined action of depth and velocity, have been developed for rural basins and are applied in fluvial flooding cases. By using GIS tools and the modules for spatial analysis an analysis of flood risk in urban watershed based on multi-criteria decision analysis and combinatorial weighting factors has been developed. The aim of this paper is to make contributions to the mixed weighing method to determine urban flood hazard. Risk maps were developed in a case study by applying EPA_SWMM model to simulate a 1 hour and 28.8 mm depth rainfall event. Finally, new criteria are proposed for standardization of this indicator by changing the normalized scale, from a qualitative sensitivity analysis and comparing hazard maps.

Keywords : hazard; risk; urban drainage; indicator; floods.

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