Preprints
https://doi.org/10.5194/nhess-2017-303
https://doi.org/10.5194/nhess-2017-303

  31 Aug 2017

31 Aug 2017

Status: this preprint has been retracted.

Review Article: Validation of flood risk models: current practice and innovations

Daniela Molinari1, Karin De Bruijn2, Jessica Castillo3, Giuseppe T. Aronica4, and Laurens M. Bouwer2 Daniela Molinari et al.
  • 1Department of Civil and Environmental Engineering, Politecnico di Milano, Milan, 20133, Italy
  • 2Deltares, Delft, 2629-HD, The Netherlands
  • 3Research Institute on Water and Environmental Engineering, Universitat Politècnica de València, Valencia, 46022, Spain
  • 4Department of Engineering, University of Messina, Messina, 98166, Italy

Abstract. Although often neglected, model validation is a key topic in flood risk analysis, as flood risk estimates are characterised by significant levels of uncertainty. In this paper, we discuss the state of art of flood risk models validation, as concluded from the discussion among more than 50 experts at two main scientific events. The events aimed at identifying policy and research recommendations towards promoting more common practice of validation, and an improvement of flood risk models reliability. We pay specific attention to the different components of the risk modelling chain (i.e. flood hazard, defence failure and flood damage analysis) as well as to their role into risk estimates, to highlight specificities and commonalities with respect to implemented techniques and research needs. The main conclusions from this review can be summarised as the need of higher quality data to perform validation and of benchmark solutions to be followed in different contexts, along with a greater involvement of end-users in the debate on flood risk models validation.

This preprint has been retracted.

Daniela Molinari et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Daniela Molinari et al.

Daniela Molinari et al.

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This preprint has been retracted.

Short summary
Flood risk estimates are characterised by significant uncertainties; accordingly, evaluating the reliability of such estimates (i.e. validating flood risk models) is crucial. Here, we discuss the state of art of flood risk models validation with the aim of identifying policy and research recommendations towards promoting more common practice of validation. The main conclusions from this review can be summarised as the need of higher quality data to perform validation and of benchmark solutions.
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