Vienne

Recorded Natural Hazards (Géorisques)

It has 265 municipalities and 438,897 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is moderate (zone 3 of 5). A natural disaster has been declared 3,198 times since 1982 (one declaration per municipality and decree), mostly for floods (1,425) and drought (1,082). The most recent was signed on 21 April 2025. 28 municipalities have a high radon potential (category 3), home to 6% of inhabitants. 41 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

• 2010Floods and Mudflows · 27 February 2010266 municipalities
• 1999Ground Movements · 25 December 1999266 municipalities
• 2010Ground Movements · 27 February 2010266 municipalities
• 1999Floods and Mudflows · 25 December 1999266 municipalities
• 1982Floods and Mudflows · 8 December 1982266 municipalities
• 1993Floods and Mudflows · 24 December 1993107 municipalities

Most Frequently Affected Municipalities

• 26Poitiers
• 25La Roche-Posay
• 24Chauvigny
• 22Jaunay-Marigny
• 22Lathus-Saint-Rémy
• 22Mignaloux-Beauvoir
• 22Valdivienne
• 22Saint-Martin-la-Pallu

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