Abstract
Spatial Data Modeling to Support National Flood Risk Assessment Track: Water Resources Author(s): Robert Deakin The assessment of flood risk at a national scale has been a concern of the UK government since the mid-1990s. Through the quantification of annual flood risk (in terms of economic damage), it has sought to establish appropriate levels of funding for medium- and long-term investment strategies in flood risk management. This paper examines the geospatial data modeling that has been fundamental to the development of these methodologies, which rely heavily on locally resolute mapping of defense infrastructure, floodplain morphology and risk receptors (properties, transport infrastructure, agriculture, environmental and cultural heritage assets). Vector and tesseral data combine, and interchange, within GIS to provide input to novel probabilistic flood risk models, the output from which support a national, Web-enabled flood map. These methods also enabled rapid scenario development allowing the use by government to evaluate potential investment policy options and responses to climate change. Robert Deakin Halcrow Group Ltd. Geomatics and GIS Burderop Park Swindon SN4 0QD GB Phone: +44 1793 812479 E-mail: deakinr@halcrow.com |
|||||
