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
Likelihood and intensity of a potentially destructive phenomenon (earthquake, floods)
Determined by nature
exposure
Location and value of things that are important to us(lives , property)
Determined by people
vulnerability
Likelihood that assets will be damaged or destroyed when exposed to a hazard event
risk
Likelihood that things we value will be harmed

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
Increasing Efforts & Complexity
Hazard/Risk Index
Pros: fast, low data requirements, output easy to understand
Cons: low resolution, subjective
Historical Scenario
Pros: based on event –specific data, good for frequent hazards
Cons: misses extreme events, potential impacts of climate change
Probabilistic
Pros: accounts for both frequent/low-impact and rare/extreme events
Cons: high data/expertise requirements, need to ensure outputs can be understood

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 Mapping Case 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

17. 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

18. Draft Web Portal

19. Draft Web Portal

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

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

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