Methods and tools to support real time risk-based flood forecasting - a UK pilot application

Methods and tools to support real time risk-based flood forecasting - a UK pilot application.
Brown, E.and Bachmann, D. and Cranston, M. and de Leeuw, A. and Boelee, L. and Diermanse, F. and Eilander, D. and De Bruijn, K. and Weerts, A. and Hazelwood, C. and Beckers, J.
In: FLOODrisk 2016, 18-20 October 2016, Lyon, France. (2016)

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Abstract:Flood managers have traditionally used deterministic models to assess potential flood risk. This risk information has been widely available for strategic planning, but restrictions on input data and simulation times have meant that information on the risk of flooding has not been available for operational flood forecasting purposes. In practice, however, the operational flood manager has probabilistic questions to answer, which are not completely supported by the outputs of traditional, deterministic flood forecasting systems. In a collaborative approach, HR Wallingford and Deltares have developed methods, tools and techniques to extend existing flood forecasting systems with elements of strategic flood risk analysis, including probabilistic failure analysis, two dimensional flood spreading simulation and the analysis of flood impacts and consequences. This paper presents the results of the application of these new operational flood risk management tools to a pilot catchment in the UK. It discusses the problems of performing probabilistic flood risk assessment in real time and how these have been addressed in this study. It also describes the challenges of the communication of risk to operational flood managers and to the general public, and how these new methods and tools can provide risk-based supporting evidence to assist with this process.
Item Type:Conference or Workshop Item (Paper)
Subjects:Floods > General
ID Code:1303
Deposited On:18 May 2016 13:49
Last Modified:18 Jan 2017 13:11

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