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The urbanization process that has occurred in the last few years has been causing changes in the hydrologic cycle. These changes are making the classic systems work to the limit leading to some crises. To reduce these effects, some alternative techniques (BMPs) are being developed based mainly on stormwater retention and infiltration. For this case, there several different possible conceptions of drainage systems currently available, and it is important to have tools to compare the technical, social and environmental efficiency of these alternatives. The main purpose of this paper was to propose indicators that can be used to evaluate different types of urban drainage systems. These indicators were used and verified by utilizing two different methods of multicriteria analysis, Electre III and Compromise Programming, in three case studies of chosen areas whose drainage projects included differently conceived systems with classic, intermediaries and alternative techniques (BMPs). Several important conclusions were reached, such as the preference for alternative techniques over classic ones, when comparing environmental and social aspects with the hydraulic and hydrologic ones.

Análise Multicritério para a Avaliação de Sistemas de Drenagem Urbana Proposição de Indicadores e de Sistemática de Estudo