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Preferences for Blue-Green or Grey Infrastructure to Reduce Flood Risk: A Choice Experiment

John Deely and Stephen Hynes

No 309506, Working Papers from National University of Ireland, Galway, Socio-Economic Marine Research Unit

Abstract: Flood reduction infrastructure is a vital aspect of many urban and peri-urban areas. To date, the majority of flood reduction projects use traditional “grey” materials and techniques. However, the use of blue-green infrastructures (BGI) is becoming more popular. This paper explores residents’ preferences for BGI or grey infrastructure projects to reduce flood risk. A discrete choice experiment using a split sample methodology was employed to determine if residents of the Carlingford Lough catchment in Ireland prefer either type of infrastructure to reduce flood risk. A random parameter logit was applied to the data. The results reveal that for the average person, they have a preference for flood risk reduction resulting in a flooding event once every 25 years rather than once every five years. The average respondent also holds a preference for BGI based solutions as opposed to a grey infrastructure solution. However, respondent living in a flood-prone area show no greater preference for a BGI solution.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Pages: 31
Date: 2020
New Economics Papers: this item is included in nep-dcm and nep-env
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DOI: 10.22004/ag.econ.309506

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