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) : 34th World Congress Brisbane : Integrating urban drainage within a rainfall based flood risk assessment model and the impact on flo...
Integrating urban drainage within a rainfall based flood risk assessment model and the impact on flood hazard
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Seeking to develop urban Flood Risk Assessment (FRA) modelling, this paper reviews the degree to which an existing TUFLOW (BMT WBM, 2009) 100yr event rainfall FRA model of a densely populated UK town is enhanced by dynamically linking the 2D overland model to a new 1D urban
drainage and sewer network model. The hydrodynamic 1D-2D model details road drainage features such as kerb-side gutter channels and gully inlets connecting the urban surface model to a subsurface storm sewer network. This is used to assess the impact of integrating urban drainage on the overall FRA flood result in terms of inundation (peak depths and extents). The paper further considers potential application through the use of maximum velocity to map Flood Hazard to both people and
infrastructure (DEFRA, 2005). Results indicate that while integrating urban drainage has significant impact on inundation result, the wider Flood Hazard prediction remains largely unaffected.
File Size : 2,265,570 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : 34th World Congress Brisbane
Date Published : 07/08/2012
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