Flood-hazard analysis
Combined topography, drainage, rainfall and land-use information in a GIS-based assessment.
Integrated flood-risk assessment · Plateau State
Plateau Flood Hazard, Vulnerability and Risk Assessment
Terrain, drainage, rainfall, land cover, exposed assets and vulnerable communities integrated across three catchments for mitigation and early-warning planning.
Project objective
Connect physical flood hazard with people, assets and vulnerability.
The assessment combined terrain, drainage, rainfall, land use, exposure and vulnerability indicators to identify flood-prone zones and develop integrated risk maps for mitigation, preparedness and early-warning planning.
3Catchments assessed
7Local government areas
AHPMulti-criteria weighting
30 mCore analysis resolution
My contribution
Building an integrated hazard–exposure–vulnerability framework.
My GIS role linked hydrological terrain analysis with land cover, exposed assets, vulnerable populations and decision-ready cartography.
Watershed delineation
Derived watersheds and flood-prone zones from DEM-based hydrological analysis.
Land-cover influence
Assessed how urban growth and vegetation loss affect runoff and flood susceptibility.
Exposure mapping
Mapped settlements, roads, farmland, infrastructure and vulnerable populations.
Multi-criteria risk
Integrated hazard, exposure and vulnerability layers through weighted spatial overlay.
Decision support
Produced thematic maps and datasets for mitigation, early warning and stakeholder communication.
Spatial workflow
Integrating the components of flood risk.
- 01Delineate
Derive catchments, drainage and terrain controls from elevation data.
- 02Model hazard
Combine rainfall, topography, proximity, drainage and land-cover indicators.
- 03Map exposure
Locate settlements, roads, farmland and critical infrastructure.
- 04Assess vulnerability
Integrate social and physical sensitivity indicators.
- 05Combine risk
Apply AHP-informed overlay and communicate priority areas.
Project gallery
Catchment-scale flood evidence and priority locations.
Outputs and value
Risk maps structured for mitigation and preparedness.
The completed spatial products identified where hazard, exposure and vulnerability overlap and supported practical risk-reduction discussions.
- DEM-derived watersheds, drainage and flood-prone zones
- LULC and rainfall evidence supporting hazard interpretation
- Settlement, road, farmland and critical-infrastructure exposure maps
- Integrated hazard, vulnerability and flood-risk classifications
- Cartographic outputs for technical reporting
- Spatial evidence for mitigation and early-warning planning
Project attribution: Completed for Plateau State ACReSAL within a multidisciplinary flood-risk assignment. This page describes Samuel Bahago Gabriel's GIS contribution.
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