Haute-Loire

Recorded Natural Hazards (Géorisques)

It has 257 municipalities and 228,654 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is moderate (zone 3 of 5). A natural disaster has been declared 1,564 times since 1982 (one declaration per municipality and decree), mostly for floods (895) and snow load (257). The most recent was signed on 21 April 2025. 197 municipalities have a high radon potential (category 3), home to 72% 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

• 1982Snow Load · 26 November 1982257 municipalities
• 1982Storms · 6 November 1982257 municipalities
• 1982Floods and Mudflows · 6 November 1982257 municipalities
• 2003Floods and Mudflows · 1 December 200372 municipalities
• 2008Floods and Mudflows · 1 November 200857 municipalities
• 1996Floods and Mudflows · 12 November 199648 municipalities

Most Frequently Affected Municipalities

• 16Coubon
• 15Aurec-sur-Loire
• 15Beaulieu
• 15Chadrac
• 15Le Monastier-sur-Gazeille
• 15Saint-Germain-Laprade
• 15Saint-Vincent
• 14Polignac

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