Aveyron

Recorded Natural Hazards (Géorisques)

It has 285 municipalities and 279,609 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is low (zone 2 of 5). A natural disaster has been declared 1,257 times since 1982 (one declaration per municipality and decree), mostly for floods (813) and storms (285). The most recent was signed on 18 January 2026. 218 municipalities have a high radon potential (category 3), home to 80% of inhabitants. 162 municipalities are covered by an approved natural hazard prevention plan.

Seismicity Zones

Number of municipalities in each zone of the regulatory seismic zoning (from 1, very low, to 5, high).

Natural Disasters Declared Since 1982

Declarations per five-year period.

Most Widespread Events

• 1982Floods and Mudflows · 6 November 1982285 municipalities
• 1982Storms · 6 November 1982285 municipalities
• 1994Floods and Mudflows · 4 November 199480 municipalities
• 2003Floods and Mudflows · 3 December 200374 municipalities
• 1992Floods and Mudflows · 26 September 199248 municipalities
• 2022Drought (Clay Shrinkage) · 1 July 202225 municipalities

Most Frequently Affected Municipalities

• 19Millau
• 15Rivière-sur-Tarn
• 13Saint-Affrique
• 12Brusque
• 12Compeyre
• 11Aguessac
• 11Camarès
• 11Creissels

Hazards Listed by Municipality

Number of municipalities exposed to each natural hazard according to the departmental major risks file.

Hazards at a specific address on Géorisques