Multicriteria analysis applied to the management of urban pluvial waters

Abstract

The urbanization process significantly changes natural drainage processes within a river basin, for instance with the increase of volume of rainwater drained superficially it also increases the peak flows of water bodies, degradation of the water quality, and the sediment generation, among others. Rainwater drainage management plays a key role in urban areas, becoming increasingly complex, involving not only hydrological and hydraulic aspects, but also environmental, social and health issues, as well as other technical and high costs issues. This complexity leads, increasingly, to the use of multicriteria analysis as a support for decision-making. To deal with this, this work aimed to apply a multicriteria analysis methodology, using PROMETHEE method, to issues of urban rainwater drainage. The results indicated that the application of multiparticipative decision making and multicriteria analysis to possible scenarios of hydraulic interventions is well suited to reality. RESUMOO processo de urbanização altera significativamente os processos de escoamento natural da bacia hidrográfica, com o aumento do volume das águas pluviais escoadas superficialmente, incremento das vazões de pico dos corpos d'água, degradação da qualidade da água, geração de sedimentos, entre outros. A gestão das águas pluviais tem, então, um papel fundamental em uma área urbana, este processo vem se tornando cada vez mais complexo, envolvendo não somente aspectos hidrológicos e hidráulicos, como também questões ambientais, sociais e sanitárias, além dos aspectos técnicos e de custos usualmente considerados. Esta complexidade leva, cada vez mais, ao uso da análise multicritério como suporte a decisão. Neste sentido, este trabalho objetiva a aplicação de uma metodologia de análise multicriterial aplicado a drenagem urbana, com o auxílio do PROMETHEE. Os resultados indicaram que a aplicação de análise de multicritério agregado aos cenários de intervenções hidráulicas se adequa bem à realidade, pois permite incluir uma gestão participativa.

Multi-Criteria Evaluation for China Low-Impact Development Based on Principal Component Analysis

“…Therefore, a numerical system could be used to represent effectiveness, i.e., the ratings 'most important', 'more important', 'important', 'less important', 'not important' are converted to the numbers 5, 4, 3, 2, and 1 respectively. This rating was used to quantify the quantitative indicators [39]. The numbers only present the relative scores of various LID alternatives.…”

Multicriteria Decision Analysis Applied to Sponge City Construction in China: A Case Study

“…Linkov et al (2007) applied a Stochastic Multiobjective Acceptability Analysis III (SMAA III) approach of MCDA to the analysis of a suite of metrics to gauge response to an oil spill and to deal with assessment of the contaminated site (Linkov et al , ). Araújo et al () used a multicriteria analysis to deal with complex urban rainwater drainage issues. The analysis was expanded to include environmental, social, health, and other technical issues, rather than just hydrological and hydraulic aspects.…”

“…Multicriteria decision analysis enables the application of theoretical scientific approaches to decisions in multicriteria problems (Linkov et al ). It can help decision makers choose the best option between two or more decision alternatives (Araújo et al ). Normally, the several steps for MCDA are identifying objectives, identifying options for achieving the objectives, identifying the criteria used to compare alternatives, analyzing the alternatives, making choices, and providing or receiving feedback (Department for Communities and Local Government ).…”

Indicadores e índices para o gerenciamento de águas pluviais urbanas no Brasil: situação atual e oportunidades de evolução

“…contexto, a necessidade da consideração de diversos aspectos e condições existentes no meio urbano torna o gerenciamento das águas pluviais complexo (Araújo et al, 2017).…”