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Socio-economic assessment of green infrastructure for climate change adaptation in the context of urban drainage planning

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hdl:2117/327979
Document typeArticle
Defense date2020-05
Rights accessOpen Access
This work is protected by the corresponding intellectual and industrial property rights.
Except where otherwise noted, its contents are licensed under a Creative Commons license
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Attribution 3.0 Spain
ProjectRESCCUE - RESCCUE (EC-H2020-700174)
BINGO - Bringing INnovation to onGOing water management – A better future under climate change (EC-H2020-641739)
BINGO - Bringing INnovation to onGOing water management – A better future under climate change (EC-H2020-641739)
Abstract
Green infrastructure (GI) contributes to improve urban drainage and also has other societal and environmental benefits that grey infrastructure usually does not have. Economic assessment for urban drainage planning and decision making often focuses on flood criteria. This study presents an economic assessment of GI based on a conventional cost-benefit analysis (CBA) that includes several benefits related to urban drainage (floods, combined sewer overflows and waste water treatment), environmental impacts (receiving water bodies) and additional societal and environmental benefits associated with GI (air quality improvements, aesthetic values, etc.). Benefits from flood damage reduction are monetized based on the widely used concept of Expected Annual Damage (EAD) that was calculated using a 1D/2D urban drainage model together with design storms and a damage model based on tailored flood depth–damage curves. Benefits from Combined Sewer Overflows (CSO) damage reduction were monetized using a 1D urban drainage model with continuous rainfall simulations and prices per cubic meter of spilled combined sewage water estimated from literature; other societal benefits were estimated using unit prices also estimated from literature. This economic assessment was applied to two different case studies: the Spanish cities of Barcelona and Badalona. The results are useful for decision making and also underline the relevancy of including not only flood damages in CBA of GI.
CitationLocatelli, L. [et al.]. Socio-economic assessment of green infrastructure for climate change adaptation in the context of urban drainage planning. "Sustainability", Maig 2020, vol. 12, núm. 9, p. 3792:1-3792:18.
ISSN2071-1050
Publisher versionhttps://www.mdpi.com/2071-1050/12/9/3792
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