Lesotho Risk Assessment Indicators: Admin Level 2 Flood and Demographic Data

Risk assessment indicators for Lesotho at the admin level 2 (district) scale, specifically designed for flood hazard analysis. Produced by the Heidelberg Institute for Geoinformation Technology (HeiGIT) and updated in March 2026, the data integrates demographic, environmental, and infrastructure layers from WorldPop, OpenStreetMap, and Google Earth Engine.

Use Cases

• Mapping healthcare gaps by analyzing population percentages within 30-minute hospital travel times using access_pop_hospitals_30min
• Identifying high-risk zones for flood response based on the number of children under 5 (children_u5) and elderly residents (elderly)
• Quantifying district-level infrastructure resilience using facility counts for schools and hospitals via education_count and hospitals_count

Strengths

• Admin level 2 granularity for all indicators
• Integration of specific travel-time accessibility metrics (30, 60, 120 min)
• Multi-source validation using WorldPop and OpenStreetMap

Limitations

• Potential under-counting of facilities in OpenStreetMap due to volunteer mapping gaps in rural areas
• Demographic data is based on modeled WorldPop estimates rather than a direct physical census

Provenance

Source

HeiGIT (Heidelberg Institute for Geoinformation Technology)

Collection Method

Aggregated from open data sources including WorldPop, OSM, and Google Earth Engine via the GAIA Pipeline.

Freshness

Updated as of March 2026.

Geography

Lesotho