Freetown, Sierra Leone Flood Risk Assessment

This comprehensive flood risk assessment combines: (1) JBA's high-resolution (1m) probabilistic flood hazard maps for both river and surface water flooding across 6 return periods (RP20-RP1500); (2) GEM Foundation's building exposure database (GED4ALL taxonomy) with 153,436 georeferenced buildings valued at USD $8.08 billion; and (3) complete catastrophe modeling loss outputs including Average Annual Loss, loss exceedance curves (OEP/AEP), event loss tables (1,943 stochastic events), and spatial loss aggregations. Dataset represents industry-standard probabilistic flood risk assessment comparable to commercial catastrophe models.