The use of aerial photogrammetry surveys can play a major role across emergency management phases such as mitigation, preparedness, response and recovery. It can be used to assist risk reduction initiatives through identification of hazard zones associated with flood plains, coastal inundation and erosion, and bushfires. It can also be used to verify hazard and loss models by measuring the location and magnitude of actual events.
The effective use of accurate digital terrain models makes a significant difference in reducing the effect of floods. Orthophotography helps emergency services gain a clear knowledge of the before and after flood damage.
During bushfires, Emergency Services, State and Federal Governments need to access up to date spatial information such as current vegetation, slope, aspect, infrastructure, infrastructure location, evacuation routes, hazardous areas and locations of water sources. Most of this information can be extracted from photogrammetry with visible and near-infrared aerial ortho-photos and elevation data to serve as a base for GIS applications and decision making.