Though it is almost impossible to fully recover the damage caused by the disasters, it is possible to:
- Minimize the potential risks
- Prepare and implement developmental plans
- Mobilize resources
- Help in rehabilitation and post-disaster reconstruction.
GIS plays a crucial role in efficient mitigation of disasters
Disaster Management mainly includes:
Flood Plain Mapping-Floodplain management activities includes: base mapping, topographic mapping, and post-disaster verification of mapped floodplain extents and depths.
It also includes mapping of: Obstructions Data (bridge and culvert cross-sections), Hydrologic Data (discharge rates for the storm(s) of interest), and Hydraulic Data (loss coefficients and hydraulic boundary conditions).
Typical floodplain analysis data requirements include:
- Reference stations creation and Control Point Survey
- Aerial Survey and Data collection
- Photogrammetric processing and GIS Creation
Earthquake Management- GIS provides an opportunity to civilian authorities and international agencies to enhance their preparedness for coping with natural disasters in general and earthquakes in particular.
Key features provided by GIS are:
- Map Navigation
- Layer control
- Remote detection
- Ground based detection
Using these features the planner and decision makers can better view and manage the data about the area under study.