Articles | Volume 20, issue 2
Nat. Hazards Earth Syst. Sci., 20, 625–641, 2020
https://doi.org/10.5194/nhess-20-625-2020

Special issue: Advances in computational modelling of natural hazards and...

Nat. Hazards Earth Syst. Sci., 20, 625–641, 2020
https://doi.org/10.5194/nhess-20-625-2020

Research article 27 Feb 2020

Research article | 27 Feb 2020

Improved accuracy and efficiency of flood inundation mapping of low-, medium-, and high-flow events using the AutoRoute model

Michael L. Follum et al.

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Cited articles

Afshari, S., Tavakoly, A. A., Rajib, M. A., Zheng, X., Follum, M. L., Omranian, E., and Fekete, B. M.: Comparison of new generation low-complexity flood inundation mapping tools with a hydrodynamic model, J. Hydrol., 556, 539–556, https://doi.org/10.1016/j.jhydrol.2017.11.036, 2018. 
Ali, A. M., Solomatine, D. P., and Di Baldassarre, G.: Assessing the impact of different sources of topographic data on 1-D hydraulic modelling of floods, Hydrol. Earth Syst. Sci., 19, 631–643, https://doi.org/10.5194/hess-19-631-2015, 2015. 
Bates, P. D. and De Roo, A. P. J.: A simple raster-based model for flood inundation simulation, J. Hydrol., 236, 54–77, https://doi.org/10.1016/S0022-1694(00)00278-X, 2000. 
Benedict, S. T., Caldwell, A. W., and Clark, J. M.: Flood-inundation maps for the Saluda River from Old Easley Bridge Road to Saluda Lake Dam near Greenville, South Carolina, US Geological Survey Scientific Investigations Map 3244, US Geological Survey, Reston, Virginia, USA, https://doi.org/10.3133/sim3244, 2013. 
Brandt, S. A. and Lim, N. J.: Importance of river bank and floodplain slopes on the accuracy of flood inundation mapping, in: River Flow 2012: Vol. 2, Proceedings of the International Conference on Fluvial Hydraulics, San 5–7 September 2012, José, Costa Rica, edited by: Murillo Muñoz, R. E., CRC Press/Balkema (Taylor & Francis), Leiden, the Netherlands, 1015–1020, 2012. 
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AutoRoute is one of the tools used by the US Military to create high-resolution flood inundation maps at regional to continental scales. Although proven to be useful in simulating floods in remote regions of the world, the accuracy of the model has had only limited testing for nonextreme flood cases. This paper presents improvements to AutoRoute to accurately simulate both extreme and nonextreme flood cases while improving the applicability in a production setting.
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