Territoire de Belfort

Recorded Natural Hazards (Géorisques)

It has 101 municipalities and 140,255 inhabitants. Under the seismic zoning in force since 2011, 35 municipalities are in a medium or high seismicity zone (21% of inhabitants). A natural disaster has been declared 540 times since 1982 (one declaration per municipality and decree), mostly for floods (333) and ground movements (132). The most recent was signed on 13 October 2024. 30 municipalities have a high radon potential (category 3), home to 54% of inhabitants. 58 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

• 1999Ground Movements · 25 December 1999101 municipalities
• 1999Floods and Mudflows · 25 December 1999101 municipalities
• 1990Floods and Mudflows · 14 February 199057 municipalities
• 2018Drought (Clay Shrinkage) · 1 July 201833 municipalities
• 1988Floods and Mudflows · 1 August 198831 municipalities
• 1988Ground Movements · 1 August 198831 municipalities

Most Frequently Affected Municipalities

• 13Belfort
• 11Offemont
• 11Valdoie
• 10Rougemont-le-Château
• 9Andelnans
• 9Bavilliers
• 9Essert
• 9Foussemagne

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