Metodologia para priorização de intervenções em trechos de cursos de água: estudo de caso torrentes Bolonia e Yomasa, Bogotá - Colômbia

Abstract

The cities represent one of more the expressive matenal izations of the anthropic actions and they need to be in baance with his ecosystenns to provide quaity of life to his inhabitants. The water courses as members of the urban ecosystems, are highly impressed depending on the urbanization. Several researchescome trying and investigating ways of recoveing or restoring this type of ecosystems, contributing to the minimization of the negative impacts of the urbanization. Between the existing offe·s they are the rwtoraticn of both urban and rural water courses, that in the last decades come being planned and realized in several countries. Meanwhilethe definition of which wate· courses must be restored is complex. In this context the present work seeks to attend to this need, offering a methodology of aid for decision based on analysis multi criterion for prioritization of intenxentions in oourx of wate· based on an eva uation that considers the impacts suffered by the course of water and the pressure by anthropic occupation that suffers this span. It is based on a qualitative evaluation with base on indicators that integrate sanitary aspects risk of flood, environmental, hydrological, sedimentological social and pressure. The mehodology proposes the establishment of the weight of the indicators by means of it consults specialists The aggregation of the indicators of state was realized by the method multi criterion TOPSIS, cbtai ning a index of state,, that analyzed as a whole with the index of anthropic prewire allows the hierarchical organization of the spans for priority of intervention.This methodology was evaluated by means of his application to a study of case, in snippets Torrents in the city of Bogota, having performed a sensitivity analysfs of the results. The methodology shown coherent and of easy application, bei ng able to be constituted in a useful tool to help the decision to the analysts and decisores in the definition of prioritization of interventions for the water courses, subsidizi ng thisway the decision-making process