Zonificación de la amenaza ante inundaciones a partir de un método de evaluación multicriterio en la ciudad de Santiago de Cali, Colombia

Abstract

The purpose of this article is to Zone the flood threat in Santiago de Cali, Colombia, based on a multicriteria evaluation method integrated by seven analysis variables, constructed from the linear combination weighted and implemented in the platform of a geographic information system. The results shows that the threat classified as high, occupies 6 % of the surface of the floodplate, the average 22 % and the low 72 %. The most vulnerable areas are sectors located in 37 neighborhoods located mainly in the eastern part of the city, a condition that is determined by the depth of flood, the accumulation of flow, the slope and the proximity to channels and water sources. The zoning of the threat to floods is an approach to the knowledge of disaster risk and approaches the instrumentation of land management.