Urban flood return period assessment through rainfall-flood response modelling

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Abstract

Intense rainfall can often cause severe floods, especially in urbanized areas, where population density or large impermeable areas are found. In this context, floods can generate a direct impact in a social-environmental-economic viewpoint. Traditionally, in design of Urban Drainage Systems (UDS), correlation between return period (RP) of a given rainfall and RP of its consequent flood has been assumed to be linear (e.g.DS/EN752 (2008)). However, this is not always the case. Complex UDS, where diverse hydraulic infrastructures are often found, increase the heterogeneity of system response, which may cause an alteration of the mentioned correlation. Consequently, reliability on future urban planning, design and resilience against floods may be also affected by this misassumption. In this study, an assessment of surface flood RP across rainfall RP has been carried out at Lystrup, a urbanized catchment area of. located in Jutland (Denmark), which has received the impact of several pluvial flooding in the last recent years.
Original languageEnglish
Publication date2017
Publication statusPublished - 2017
EventEuropean Geosciences Union General Assembly 2017 - Wien, Austria
Duration: 23 Apr 201728 Apr 2017

Conference

ConferenceEuropean Geosciences Union General Assembly 2017
CountryAustria
CityWien
Period23/04/201728/04/2017

Keywords

  • Urban flooding
  • Rainfall

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