Flood Risk Level (L1–L5)
Flood Risk Level rates a location's flooding exposure on a five-step scale, L1 (lowest) to L5 (highest), based on Bangkok's district flood model.
How we calculate it
Each building inherits the flood level of its district polygon from our Bangkok flood layer (risk_factors.flood_risk_level). Where a per-building score exists it overrides the district value. See the live map on the Flood page.