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Flood Risk Analysis
Flood mapping using runoff, stream channels and impervious surface data.
Purpose
Spatially identify flood risk from extreme rainfall and stream overflow.
Analysis Method
Hydrological modeling, surface runoff analysis and GIS-based flood-extent scenario simulation.
Data Sources
- · Digital elevation model
- · Meteorological rainfall data
- · Impervious surface map
- · Drainage infrastructure data
Outputs
- · Flood zone map
- · Surface runoff map
- · Exposed population and building analysis
Benefits
- · Infrastructure investment prioritization
- · Emergency planning
- · Insurance and investment risk assessment
Sample Use Scenario
A municipality wants to assess flood risk before permitting construction near a stream channel.