In a GIS-based risk assessment, what is the main purpose of overlaying hazard layers with asset locations?

• A. To identify overlap areas where exposure is highest.
• B. To visualize property boundaries for taxation.
• C. To eliminate the need for data validation.
• D. To focus only on aesthetics of the map.

Answer: (A)

Overlaying hazard layers with asset locations is about mapping where hazards intersect with what you’re protecting. By bringing hazard zones (like flood risk, wildfire, or seismic areas) onto the same map as asset locations, you can see exactly which assets lie within or near those hazards. This reveals exposure: which assets are at risk, how many, and where the highest concentration of risk is. With that insight, you can prioritize mitigation actions, allocate resources to the most exposed assets, and plan responses or resilience measures. It also helps in estimating potential losses and guiding decisions on protection, insurance, or relocation.

The other options don’t fit this purpose: mapping property boundaries for taxation isn’t about hazard exposure; overlay doesn’t remove the need for data validation, and overlays aren’t used mainly to improve map aesthetics but to reveal where risk affects assets.