Eure-et-Loir

Recorded Natural Hazards (Géorisques)

It has 363 municipalities and 433,129 inhabitants. Under the seismic zoning in force since 2011, its highest seismicity is very low (zone 1 of 5). A natural disaster has been declared 1,416 times since 1982 (one declaration per municipality and decree), mostly for floods (812) and ground movements (401). The most recent was signed on 8 July 2025. 64 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

• 1999Floods and Mudflows · 25 December 1999365 municipalities
• 1999Ground Movements · 25 December 1999365 municipalities
• 1995Floods and Mudflows · 17 January 199578 municipalities
• 2018Drought (Clay Shrinkage) · 1 October 201833 municipalities
• 2021Floods and Mudflows · 19 June 202124 municipalities
• 2018Floods and Mudflows · 11 June 201818 municipalities

Most Frequently Affected Municipalities

• 17Nogent-le-Rotrou
• 16Châteaudun
• 13Les Villages Vovéens
• 12Vald'Yerre
• 12Auneau-Bleury-Saint-Symphorien
• 12Chartres
• 12Lucé
• 12Luisant

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