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Open AccessArticle

Framework for Offline Flood Inundation Forecasts for Two-Dimensional Hydrodynamic Models

Chair of Hydrology and River Basin Management, Department of Civil, Geo and Environmental Engineering, Technical University of Munich, Arcisstrasse 21, 80333 Munich, Germany
Author to whom correspondence should be addressed.
Geosciences 2018, 8(9), 346;
Received: 19 July 2018 / Revised: 22 August 2018 / Accepted: 11 September 2018 / Published: 13 September 2018
(This article belongs to the Special Issue Hydrology of Urban Catchments)
The paper presents a new methodology for hydrodynamic-based flood forecast that focuses on scenario generation and database queries to select appropriate flood inundation maps in real-time. In operational flood forecasting, only discharges are forecasted at specific gauges using hydrological models. Hydrodynamic models, which are required to produce inundation maps, are computationally expensive, hence not feasible for real-time inundation forecasting. In this study, we have used a substantial number of pre-calculated inundation maps that are stored in a database and a methodology to extract the most likely maps in real-time. The method uses real-time discharge forecast at upstream gauge as an input and compares it with the pre-recorded scenarios. The results show satisfactory agreements between offline inundation maps that are retrieved from a pre-recorded database and online maps, which are hindcasted using historical events. Furthermore, this allows an efficient early warning system, thanks to the fast run-time of the proposed offline selection of inundation maps. The framework is validated in the city of Kulmbach in Germany. View Full-Text
Keywords: database; flood forecast; flood inundation map; hydrodynamic models database; flood forecast; flood inundation map; hydrodynamic models
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Bhola, P.K.; Leandro, J.; Disse, M. Framework for Offline Flood Inundation Forecasts for Two-Dimensional Hydrodynamic Models. Geosciences 2018, 8, 346.

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