Flood Risk Mapping: From DEM to Risk Zones in Minutes

Why flood risk mapping matters

Floods cause $40 billion in damages annually worldwide. Understanding where flooding will occur — before it happens — saves lives and money. Insurance companies, governments, and urban planners all need flood risk maps.

The data you need

At minimum, you need a Digital Elevation Model (DEM). With GeoPilot, you can upload a GeoTIFF DEM and the AI handles everything from there.

Step by step with GeoPilot

Upload your DEM file. Then type:

"Show flood risk zones colored by severity"

GeoPilot will:

• Fill depressions in the DEM
• Calculate flow direction and accumulation
• Compute HAND (Height Above Nearest Drainage)
• Classify areas into risk zones (Low, Medium, High, Critical)
• Color the map by severity

Advanced analysis

Follow up with questions like:

• "How many buildings are in the high-risk zone?"
• "Calculate population exposed to flood risk by district"
• "Generate a PDF flood risk report"

Who uses this

Insurance underwriters for property risk scoring. City planners for zoning decisions. Emergency managers for evacuation planning. Environmental consultants for EIA reports.