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Vulnerability & Risk Hazard Mapping

Vulnerability & Risk Hazard Mapping. Risk assesment. What is a Risk Assessment ?.

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Vulnerability & Risk Hazard Mapping

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  1. Vulnerability & Risk Hazard Mapping

  2. Risk assesment

  3. What is a Risk Assessment ? • A methodology to determine the nature and extent of risk by analyzing potential hazards and evaluating existing conditions of vulnerability that together could potentially harm exposed people, property, services, livelihood and the environment on which they depend Hazard Exposure Vulnerability Impact

  4. Hazard Risk Terminology

  5. Considerations for Hazard Risk Assessment • What is intended purpose of the hazard/risk assessment? e.g building codes, land use planning, disaster management training etc. • Who are the end users? e.g engineers, urban planners, disaster managers, local community, financial planners etc. • What data sets exist to support the assessment? e.g land use, building types, historical event catalogue etc.

  6. Styles of Hazard Risk Analysis

  7. Vulnerability Vulnerability: The inability to anticipate, cope with and recover from a natural disaster, such as a flood or storm : Vulnerability is dependent on • The exposure to the hazard • The sensitivity to the impact • The resilience to recover from the consequences No simple, universally accepted method to assess vulnerability (yet)

  8. Example: income as indicator for vulnerability

  9. Vulnerability formula In which: V = Vulnerability E = Exposure S = Sensitivity C = Coping Capacity (or Resilience)

  10. Approach Towards Risk Assessment & Management • Multi Hazard Risk Assessment Frame Work • Risk = f (Hazard, vulnerability ) • Risk = f (Hazard, vulnerability, capacity ) • Risk = f (Hazard, vulnerability, preparedness )

  11. 3D- Approach

  12. Hazard MappingCase study

  13. Vulnerability & Hazard Warning Mapping Tool Several GIS layers are being prepared in a buffer of 20km across the Indus River from Chashma down to delta where it merges with sea. In addition to this the Nowshera and right bank of Indus river in Sindh is also being covered • GIS Layers: • Settlements • Roads • Embankments • Railway line • Bridges • Agriculture land

  14. Draft Web Portal • Pre-Disaster (Preparedness) • Interactive GIS tool • Risk mapping at district level • Vulnerability assessment • Evacuation plans • Safest route identification • Post Disaster (Response) • Damage assessment • Damage Need Analysis • Information dissemination

  15. Draft Web Portal

  16. Draft Web Portal

  17. Flood Forecast • Flood Early Warning • Hazard Mapping • Visualize Layers • Download Maps • Downloads • Maps • Other products Use rri simulated output for hazard mappingand perform gis analysis for damage assessment Flood hazard mapping

  18. Flood Forecast • Flood Early Warning • Hazard Mapping • Visualize Layers • Download Maps • Downloads • Maps • Other products Use rri simulated output for hazard mappingand perform gis analysis for damage assessment Mapping – Download Maps

  19. Flood Forecast • Flood Early Warning • Hazard Mapping • Visualize Layers • Download Maps • Downloads • Maps • Other products Download – Maps

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