Nigeria Risk Assessment Indicators: District-Level Flood and Infrastructure Data

Nigeria risk assessment indicators aggregated at the admin level 2 (district) scale, produced by HeiGIT and last updated in March 2026. The data integrates demographic, infrastructure, and environmental metrics from WorldPop and OpenStreetMap to facilitate flood hazard and resilience analysis.

Use Cases

• Flood risk modeling using access_pop_hospitals_30min to identify populations at risk of isolation during hazards
• Demographic vulnerability mapping using children_u5 and elderly counts per district
• Infrastructure gap analysis by comparing primary_healthcare_count against total population per ADM2_PCODE

Strengths

• Aggregated at admin level 2 for localized district-level analysis
• Includes multi-modal accessibility data with 30, 60, and 120-minute travel time thresholds
• Integrates data from four major open sources including WorldPop and OpenStreetMap

Limitations

• Facility counts like hospitals_count are subject to OpenStreetMap contributor bias and may be incomplete in remote areas
• Potential temporal misalignment between static demographic data and infrastructure updates

Provenance

Source

HeiGIT (Heidelberg Institute for Geoinformation Technology) via HDX

Collection Method

Aggregated via the GAIA Pipeline using WorldPop, OpenStreetMap, and Google Earth Engine

Freshness

Last updated March 2026.

Geography

Nigeria