IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 1: Extremes and Variability : Rainfall-on-grid modelling - a decade of practice
Rainfall-on-grid modelling - a decade of practice
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Almost ten years ago the author of this paper developed a modelling technique for two dimensional hydraulic models. The technique was simple and despite some earlier resistance from the industry, has established itself as a preferred method of preliminary broad-scale flood risk assessment. The application of this technique has been mostly in urban areas where flood risk assessment is usually required on a catchment scale. This modelling technique is based on applying rainfall directly on to the two-dimensional grid of a hydraulic model and routing the runoff within the hydraulic model. This approach eliminates/minimises the need for hydrologic modelling for runoff estimation. All major commercial two-dimensional modelling systems now offer this approach as a standard functionality within the software. This paper describes the technique, presents its history and evolution and discusses its current uses. The limitations of this technique are also highlighted.
File Size : 1,402,446 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 1: Extremes and Variability
Date Published : 07/08/2012
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