Climate and risks: seismic zone 2 and a fifth of the territory in flood-hazard areas
In the seismic classification published by the Civil Protection Department, Rieti is in zone 2 (sub-zones 2A-2B). According to ISPRA's IdroGEO platform about 22% of the municipal territory is in medium flood-hazard areas and 6,228 residents live in areas at flood risk; landslide risk is limited.
Sections: Seasons · Rainfall · Temperatures · Air quality · Environmental hazards
Seismic risk
The table of municipal seismic classification published by the Civil Protection Department (updated to May 2025) gives Rieti the value «2A-2B»: zone 2, with the sub-zones used in the Lazio Region's classification. According to the Department, in zone 2 strong earthquakes are possible; zone 1 is the most hazardous, zone 4 the least.
Floods and landslides
The IdroGEO municipal sheet, based on the ISPRA 2024 Report on hydrogeological instability, shows that out of 206.5 km² about 45.4 km² (22.0%) are medium flood-hazard areas (P2) and 21.3% are high-hazard areas (P3); the high-hazard areas are included in the medium-hazard ones. 6,228 residents (13.5%), 1,468 buildings (14.3%) and 640 businesses (16.3%) are in areas at flood risk. High and very high landslide-hazard areas (P3 and P4) cover 0.8% of the territory, with 69 residents exposed (0.2%). The platform also publishes the map of these areas.
Missing: temp_jan_avg, temp_jul_avg, rain_days_year
Data
Sources
Updated: 2026-10-22
Updated: 2026-10-22
Reviewed: 10/23/2026 · by piero.avolio · rev. 1 · Period: → 2027-10-31
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