DBPapers
DOI: 10.5593/SGEM2016/B23/S11.035

HOW CAN A BELGIAN FLOOD RISK ASSESSMENT BE THE BASE OF A NEW RISK APPROACH IN ANNOTTO BAY, JAMAICA?

H. Glas, B.Roo, G. Deruyter, A. Wulf, P. Maeyer
Friday 9 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-60-5 / ISSN 1314-2704, June 28 - July 6, 2016, Book2 Vol. 3, 271-278 pp

ABSTRACT
Flooding affects more people worldwide than any other hazard. Although the damages caused by inundations are severe in many countries, developed as well as developing, this last group lacks the resilience to cope with such hazards. Technocratic interventions have proven not to be sufficient to decrease the material and human cost of a flood. Therefore, risk-based methodologies are developed in order to minimize the consequences of these hazards. In Flanders, Belgium, an elaborate and detailed flood risk assessment tool was created, called LATIS. This tool calculates material, human and cultural losses for different flood return periods. The result is a risk map, indicating the high risk areas and the corresponding costs. This LATIS methodology was used as the base principle for a new risk analysis for Annotto Bay, Jamaica. As in most developing countries, data availability is a major issue in Jamaica. Therefore, the LATIS method had to be simplified and assumptions had to be made. Especially rainfall data and flood information was lacking. Furthermore, flooding, risk and damage are perceived differently in these regions, since the living conditions are incomparable to Flanders. An example can be found in the road network, which for the Annotto Bay risk assessment mainly served as a means to divide land use polygons and to locate buildings and not necessarily to calculate the road damage itself as opposed to developed countries such as Belgium. Taking into account the differences between developing and developed countries, a flood damage map for Annotto Bay was created. The LATIS methodology was stripped and rebuilt in order to fit the conditions of Jamaica and the available data. Although the Annotto Bay method is less elaborate, the result still presents an accurate view of the high risk areas and the spread of the flood damage. This new approach can thus be the base of other risk assessments in developing countries.

Keywords: vulnerability, risk assessment, flood analysis, damage map, LATIS

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