Haute-Corse

Recorded Natural Hazards (Géorisques)

It has 236 municipalities and 187,180 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is very low (zone 1 of 5). A natural disaster has been declared 1,450 times since 1982 (one declaration per municipality and decree), mostly for floods (1,324). The most recent was signed on 23 March 2025. 92 municipalities have a high radon potential (category 3), home to 60% of inhabitants. 72 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

• 1993Floods and Mudflows · 31 October 1993129 municipalities
• 1994Floods and Mudflows · 4 November 1994101 municipalities
• 2011Floods and Mudflows · 4 November 201164 municipalities
• 1999Floods and Mudflows · 21 October 199962 municipalities
• 2015Floods and Mudflows · 1 October 201561 municipalities
• 2006Floods and Mudflows · 14 September 200661 municipalities

Most Frequently Affected Municipalities

• 25Bastia
• 23Lucciana
• 20Vescovato
• 19Biguglia
• 18Brando
• 18Aléria
• 18Penta-di-Casinca
• 16Venzolasca

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