1. GIS Hazard Mapping and Disaster Preparedness in Barbados Coastal Planning for Disaster Management Seminar June 30th,2006 Ramon Roach Water Quality Analyst Marine Department CZMU Barbados

2. Overview • Hazard Mapping • Traditional Hazard Mapping • GIS Hazard Mapping • Is it Necessary? • HM in Barbados • Flood Hazard Mapping • Analytical Results • Applications for HM in Barbados • Disaster Management • Long-Term Planning Way Forward UVI, 2006 Coastal Planning for Disaster Management Seminar – June 30, 2006

3. Hazard Mapping • Definition: • Process of establishing geographically where and to what extent particular phenomena are likely to pose a threat to people, property, infrastructure and economic activities. • Traditionally using paper maps. • Modeling Hazard Scenarios • Evaluate effects • Frequency of occurrence • Duration of event • Intensity of event Coastal Planning for Disaster Management Seminar – June 30, 2006

4. GIS Hazard Mapping • Digital Implementation of Hazard Mapping • Geographic Information Systems (GIS) • Software Packages • ESRI ArcView • Mapmaker • Advantages Over Paper Maps • Easier to update • Automated spatial analysis • Straightforward data management • Easier to distribute • Interoperable with other data types • Effective multi-hazard mapping Coastal Planning for Disaster Management Seminar – June 30, 2006

5. LACLLA (2005) Hazard Mapping • Why produce hazard maps? • Current and projected environmental hazards make them essential • Hurricanes • Tsunamis • Climate Change • Sea Level Rise • Improves decision making • Improves planning effectiveness

6. Flood Hazard Mapping in Barbados • DELCAN Atlantic Coast Study • 1:100yr storm model • Wave runup • Contour map elevations • Disruption of services and commerce • Banking • Utilities Coastal Planning for Disaster Management Seminar – June 30, 2006

7. Flood Hazard Mapping in Barbados • Flood Model Results • 6,000 residences along the west and south coasts • 70% of west coast hotels • Emergency Shelters • St. Lawrence Church • St. Christopher’s School • Payne’s Bay Methodist Church • Police Stations • Worthing Police Station • Central Police Station • Holetown Police Station 7 Coastal Planning for Disaster Management Seminar – June 30, 2006

8. Applications for Hazard Mapping in Barbados • Disaster Management Planning • Emergency Services • Evacuation Routes • Nearest “safe” shelter depending on type or scale of environmental hazard • Number of persons displaced and excess housing required • Basic services required following a disaster • Sanitation • Drinking water • Food serc.carleton.edu Coastal Planning for Disaster Management Seminar – June 30, 2006

9. Applications for Hazard Mapping in Barbados • Long-term Development Planning • Building Setbacks • CZMU beach and cliff setbacks • Minimum building elevations (TCPDO) • Relocation or retrofitting of essential services • Utilities • Emergency Shelters • Police Stations Coastal Planning for Disaster Management Seminar – June 30, 2006

10. Applications for Hazard Mapping in Barbados • Insurance Rate Calculation • Digital Flood Insurance Rate Maps (DFIRMS) • Insurance rate based on flood vulnerability • Rates adjusted depending on base flood elevation (BFE) and freeboard • Promotes improved building practices www.ci.central-point.or.us Coastal Planning for Disaster Management Seminar – June 30, 2006

11. The Way Forward • Detailed Multi-Hazard Mapping Study for the coast • Various hazard scenarios including tsunamis and sea level rise • Tiered response systems and mitigation strategies based on hazard severity • Holistic approach to hazard management • Improved inter-agency cooperation • Long-term mitigation strategies incorporated into development planning Coastal Planning for Disaster Management Seminar – June 30, 2006