Madagascar Risk Assessment Indicators: District-Level Flood and Cyclone Data

HeiGIT produced this dataset in 2026 to provide risk assessment indicators for Madagascar at the administrative level 2 (district). It aggregates demographic, infrastructure, and hazard exposure data from WorldPop and OpenStreetMap to support flood and cyclone resilience analysis.

Use Cases

• Analyzing healthcare accessibility using access_pop_hospitals_30min to identify districts with high travel times
• Estimating disaster impact on vulnerable groups by combining hazard exposure layers with children_u5 and elderly counts
• Evaluating infrastructure density using education_count and primary_healthcare_count for resource allocation

Strengths

• Aggregated at Admin Level 2 for localized district-level analysis
• Includes specific travel-time accessibility indicators (30min, 1h, 2h) derived from openrouteservice
• Integrates multi-source data from WorldPop, OSM, and Google Earth Engine

Limitations

• Data accuracy is dependent on OpenStreetMap completeness, which may be inconsistent in remote rural areas
• District-level aggregation masks sub-district spatial variations in hazard exposure

Provenance

Source

HeiGIT (Heidelberg Institute for Geoinformation Technology)

Collection Method

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

Freshness

Last updated March 2026.

Geography

Madagascar