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Bailleul: geology and natural hazards

What public services say about the ground beneath the commune (population 14,732) and the hazards it faces: natural disasters, earthquakes, radon, cavities, clays, groundwater and rocks.

Hazard names and other data are quoted as their producers publish them, in French.

Explore the commune on the map

Bailleul at a glance

Seismic zone
2 of 5 (low)
Radon potential
Category 1 of 3 (low potential)
Recognised natural disasters
23 since 1989
Underground cavities recorded
None
Ground movements recorded
2
Risk prevention plans
None

Hazards listed by the French State

Natural and technological hazards to which the commune is exposed, according to the national GASPAR database.

  • Inondation
  • Mouvement de terrain
  • Séisme
  • Transport de marchandises dangereuses
  • Engins de guerre

Recognised natural disasters

23 events recognised as a natural disaster by ministerial order since 1989.

  • Inondations et/ou coulées de boue: 12
  • Sécheresse: 11
  • Mouvement de terrain: 1

  1. Sécheresse

    Event from 31/12/2024 to 30/12/2025, order published in the Journal officiel on 16/07/2026.

  2. Inondations et/ou coulées de boue

    Event from 27/12/2023 to 11/01/2024, order published in the Journal officiel on 24/01/2024.

  3. Inondations et/ou coulées de boue

    Event from 13/11/2023 to 24/11/2023, order published in the Journal officiel on 28/12/2023.

  4. Inondations et/ou coulées de boue

    Event from 02/11/2023 to 12/11/2023, order published in the Journal officiel on 12/12/2023.

  5. Sécheresse

    Event from 01/04/2022 to 30/09/2022, order published in the Journal officiel on 03/05/2023.

  6. Inondations et/ou coulées de boue

    Event from 27/11/2021 to 29/11/2021, order published in the Journal officiel on 30/03/2022.

  7. Sécheresse

    Event from 01/07/2019 to 30/09/2019, order published in the Journal officiel on 25/10/2020.

  8. Inondations et/ou coulées de boue

    Event from 30/05/2016 to 31/05/2016, order published in the Journal officiel on 28/04/2017.

  9. Sécheresse

    Event from 01/07/2015 to 30/09/2015, order published in the Journal officiel on 16/12/2016.

  10. Inondations et/ou coulées de boue

    Event from 05/03/2012 to 06/03/2012, order published in the Journal officiel on 02/08/2012.

  11. Sécheresse

    Event from 01/04/2011 to 30/06/2011, order published in the Journal officiel on 06/12/2012.

  12. Inondations et/ou coulées de boue

    Event from 23/07/2007 to 24/07/2007, order published in the Journal officiel on 08/12/2007.

  13. Inondations et/ou coulées de boue

    Event on 04/07/2005, order published in the Journal officiel on 30/12/2005.

  14. Inondations et/ou coulées de boue

    Event on 09/05/2000, order published in the Journal officiel on 01/08/2000.

  15. Mouvement de terrain, Inondations et/ou coulées de boue

    Event from 25/12/1999 to 29/12/1999, order published in the Journal officiel on 30/12/1999.

  16. Sécheresse

    Event from 01/10/1996 to 30/06/1998, order published in the Journal officiel on 05/02/1999.

  17. Sécheresse

    Event from 01/01/1994 to 30/09/1996, order published in the Journal officiel on 25/05/1997.

  18. Inondations et/ou coulées de boue

    Event from 19/12/1993 to 02/01/1994, order published in the Journal officiel on 15/01/1994.

  19. Sécheresse

    Event from 01/01/1993 to 30/09/1993, order published in the Journal officiel on 07/05/1995.

  20. Inondations et/ou coulées de boue

    Event from 19/11/1991 to 20/11/1991, order published in the Journal officiel on 18/08/1992.

  21. Sécheresse

    Event from 01/01/1991 to 31/12/1992, order published in the Journal officiel on 03/09/1993.

  22. Sécheresse

    Event from 01/01/1990 to 31/12/1990, order published in the Journal officiel on 17/04/1991.

  23. Sécheresse

    Event from 01/06/1989 to 19/12/1989, order published in the Journal officiel on 28/02/1990.

Earthquakes and radon

Seismic zone

Zone 2 of 5: low. This regulatory zoning, in force since 2011, sets the rules for earthquake-resistant construction.

Radon potential

Category 1 of 3: low potential. The geological formations have the lowest uranium content. Radon is a naturally occurring radioactive gas that can build up in poorly ventilated rooms.

Beneath the town hall

What BRGM maps say at the town hall. They describe that single point: elsewhere in the commune, the ground may be quite different.

  • Shrink-swell clays

  • Rising groundwater

  • Underground cavities

  • Ground movements

  • Earthquakes

  • Nature of the ground

Cavities and ground movements

Recorded across the whole commune by BRGM, in its national databases of underground cavities and ground movements.

No underground cavity recorded (quarries, cellars, military works, natural cavities…).

2 ground movements recorded (landslides, rockfalls, collapses, mudflows…).

See cavities and ground movements on the map

Risk prevention plans

No risk prevention plan is listed for the commune.

Nearby communes

Sources and limitations

Listed hazards, natural disasters, seismic zoning, radon potential, cavities, ground movements and prevention plans: Géorisques, published by the French ministry for the ecological transition, under Licence Ouverte Etalab 2.0, data accessed on 03/11/2026. Summary beneath the town hall: BRGM map services, queried when the page is displayed. List of communes and populations: API Découpage administratif (geo.api.gouv.fr), d’après le code officiel géographique de l’Insee, version of 30/10/2026.

This information reflects the state of knowledge at the scale of the commune or of a single point. It replaces neither a soil survey nor the official risk statement (état des risques) required for a sale or a rental, which is drawn up on the official French government service.