Savoie

Recorded Natural Hazards (Géorisques)

It has 273 municipalities and 448,226 inhabitants. Under the seismic zoning in force since 2011, 202 municipalities are in a medium or high seismicity zone (83% of inhabitants). A natural disaster has been declared 1,402 times since 1982 (one declaration per municipality and decree), mostly for floods (904) and storms (273). The most recent was signed on 8 July 2025. 72 municipalities have a high radon potential (category 3), home to 19% of inhabitants. 170 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

• 1982Storms · 6 November 1982273 municipalities
• 1982Floods and Mudflows · 6 November 1982273 municipalities
• 1990Floods and Mudflows · 14 February 1990100 municipalities
• 1991Floods and Mudflows · 21 December 199172 municipalities
• 1983Ground Movements · 26 November 198336 municipalities
• 1983Floods and Mudflows · 26 November 198336 municipalities

Most Frequently Affected Municipalities

• 21Val-Cenis
• 15Entrelacs
• 14La Motte-Servolex
• 14Val-d'Isère
• 13Aix-les-Bains
• 13Bourg-Saint-Maurice
• 13Modane
• 13Les Belleville

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