Côte-d'Or

Recorded Natural Hazards (Géorisques)

It has 698 municipalities and 540,100 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is low (zone 2 of 5). A natural disaster has been declared 1,797 times since 1982 (one declaration per municipality and decree), mostly for floods (1,228) and drought (562). The most recent was signed on 8 July 2025. 67 municipalities have a high radon potential (category 3), home to 4% of inhabitants. 102 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

• 1984Floods and Mudflows · 11 July 1984243 municipalities
• 1982Floods and Mudflows · 8 December 1982110 municipalities
• 2018Drought (Clay Shrinkage) · 1 July 201894 municipalities
• 1983Floods and Mudflows · 16 May 198375 municipalities
• 2003Drought (Clay Shrinkage) · 1 July 200367 municipalities
• 2020Drought (Clay Shrinkage) · 1 July 202056 municipalities

Most Frequently Affected Municipalities

• 13Fontaine-lès-Dijon
• 11Auxonne
• 11Dijon
• 11Marsannay-la-Côte
• 11Montbard
• 10Chenôve
• 10Longvic
• 9Belleneuve

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