Hydraulic hazardous areas — View Service

ISPRA mosaic of the hydraulic hazardous areas drawn up by the Basin Authorities (now the District Basin Authority) on the 3 scenarios (Legislative Decree 49/2010 transposing the Floods Directive 2007/60/EC): a) High hydraulic hazard areas P3 with return time between 20 and 50 years (frequent floods); B) areas with average P2 hazards with return time between 100 and 200 years (infrequent floods); C) P1 hazard areas (low probability of floods or extreme event scenarios).