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Climate 2013, 1(3), 148-162; doi:10.3390/cli1030148

Application of a 2D Hydrodynamic Model for Assessing Flood Risk from Extreme Storm Events

The James Hutton Institute, Aberdeen AB15 8QH, Scotland, UK
Received: 28 July 2013 / Revised: 8 October 2013 / Accepted: 17 October 2013 / Published: 5 November 2013
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In the wake of increasing flood disasters, there is an increasing use of flood inundation models to assess risks and impacts at different temporal and spatial scales. Assessing the impacts of extreme climatic rainfall events will require developing design rainfall profiles to represent rainfall under different conditions. Rainfall profiles of different return periods were developed using the Flood Estimation Handbook (FEH) methodology for a small rural catchment of Scotland, to assess flood risks at a catchment scale. Rainfall induced runoff flows were estimated based on a set of catchment characteristics. The channel and floodplain flows were modelled using a two-dimensional hydrodynamic model-TUFLOW. The main channel was represented by a one-dimensional linear channel based on surveyed data and the floodplain topography, was represented by a digital terrain model based on Light Detection and Ranging (LiDAR). A range of hydrological events with different return periods are simulated. Results show that many residential houses and an extensive area of agricultural land are at risk of flooding from extreme events such as a 1 in 100 year flood. View Full-Text
Keywords: hydrodynamic models; flow hydrograph; flood inundation map; LiDAR hydrodynamic models; flow hydrograph; flood inundation map; LiDAR

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ghimire, S. Application of a 2D Hydrodynamic Model for Assessing Flood Risk from Extreme Storm Events. Climate 2013, 1, 148-162.

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