A multicriteria methodology for performance evaluation of urban drainage systems.

What is it about?

The objective was to develop a methodology for the performance evaluation of urban drainage systems. Sixteen criteria classified in six dimensions (legal, economic, environmental, social, sustainability, technical) were selected by experts and measured by performance indicators and evaluation tables. The selected multi-objective methods were ELECTRE-TRI and TOPSIS. The categories used to define performance were “excellent”, “very good”, “good”, “fair”, “bad”, and “very bad”. To verify the methodology, it was applied to three scenarios of an existing urban drainage system. Scenario-I was a conventional drainage network. Scenario II added two detention basins to Scenario I and Scenario III included micro reservoirs in each urban lot. The ELECTRE-TRI method indicated the performances as regular, very good, and excellent for scenarios I, II, and III, respectively. By the TOPSIS method, Scenario-I was classified as good, while Scenario-II and Scenario-III were classified as very good. These results were consistent and confirmed the expectation of using stormwater best management practices.

Featured Image

Why is it important?

By using this methodology, it is possible to measure how much efficient is a solution for the drainage of a given urban area.

Perspectives