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Alpes-Maritimes (06)

Pégomas: geology and natural hazards

What public services say about the ground beneath the commune (population 8,240) 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

Pégomas at a glance

Seismic zone
3 of 5 (moderate)
Radon potential
Category 3 of 3 (significant potential)
Recognised natural disasters
36 since 1982
Underground cavities recorded
None
Ground movements recorded
None
Risk prevention plans
2

Hazards listed by the French State

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

  • Inondation: par une crue torrentielle ou à montée rapide de cours d’eau, par ruissellement et coulée de boue
  • Mouvement de terrain: eboulement ou chutes de pierres et de blocs, glissement de terrain, tassements différentiels
  • Séisme
  • Feu de forêt
  • Radon
  • Rupture de barrage
  • Transport de marchandises dangereuses

Recognised natural disasters

36 events recognised as a natural disaster by ministerial order since 1982.

  • Inondations et/ou coulées de boue: 23
  • Sécheresse: 6
  • Mouvement de terrain: 5
  • Glissement de terrain: 2
  • Tempête: 1

  1. Inondations et/ou coulées de boue

    Event from 15/10/2024 to 19/10/2024, order published in the Journal officiel on 04/11/2024.

  2. Inondations et/ou coulées de boue

    Event on 22/09/2024, order published in the Journal officiel on 02/12/2024.

  3. Mouvement de terrain

    Event on 02/03/2024, order published in the Journal officiel on 20/12/2024.

  4. Inondations et/ou coulées de boue

    Event from 02/03/2024 to 03/03/2024, order published in the Journal officiel on 28/06/2024.

  5. Inondations et/ou coulées de boue

    Event on 15/06/2023, order published in the Journal officiel on 20/10/2023.

  6. Sécheresse

    Event from 01/04/2023 to 30/06/2023, order published in the Journal officiel on 02/07/2024.

  7. Sécheresse

    Event from 01/07/2022 to 30/09/2022, order published in the Journal officiel on 03/05/2023.

  8. Inondations et/ou coulées de boue

    Event from 01/12/2019 to 02/12/2019, order published in the Journal officiel on 19/12/2019.

  9. Mouvement de terrain

    Event from 01/12/2019 to 02/12/2019, order published in the Journal officiel on 12/06/2020.

  10. Inondations et/ou coulées de boue

    Event from 23/11/2019 to 24/11/2019, order published in the Journal officiel on 30/11/2019.

  11. Mouvement de terrain

    Event from 22/11/2019 to 24/11/2019, order published in the Journal officiel on 12/06/2020.

  12. Inondations et/ou coulées de boue

    Event on 03/10/2015, order published in the Journal officiel on 29/10/2015.

  13. Inondations et/ou coulées de boue

    Event on 13/09/2015, order published in the Journal officiel on 22/01/2016.

  14. Inondations et/ou coulées de boue

    Event on 25/06/2014, order published in the Journal officiel on 04/10/2014.

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

    Event on 26/10/2012, order published in the Journal officiel on 27/06/2013.

  16. Inondations et/ou coulées de boue

    Event from 04/11/2011 to 06/11/2011, order published in the Journal officiel on 19/11/2011.

  17. Inondations et/ou coulées de boue

    Event from 30/10/2010 to 01/11/2010, order published in the Journal officiel on 02/04/2011.

  18. Inondations et/ou coulées de boue

    Event on 18/09/2009, order published in the Journal officiel on 14/11/2009.

  19. Mouvement de terrain

    Event from 11/12/2008 to 17/12/2008, order published in the Journal officiel on 01/07/2009.

  20. Sécheresse

    Event from 01/07/2007 to 30/09/2007, order published in the Journal officiel on 13/08/2008.

  21. Inondations et/ou coulées de boue

    Event from 08/09/2005 to 09/09/2005, order published in the Journal officiel on 14/10/2005.

  22. Sécheresse

    Event from 01/01/2005 to 31/03/2005, order published in the Journal officiel on 05/07/2008.

  23. Sécheresse

    Event from 01/07/2004 to 30/09/2004, order published in the Journal officiel on 05/07/2008.

  24. Sécheresse

    Event from 01/01/2004 to 31/03/2004, order published in the Journal officiel on 05/07/2008.

  25. Inondations et/ou coulées de boue

    Event from 24/12/2000 to 25/12/2000, order published in the Journal officiel on 22/04/2001.

  26. Inondations et/ou coulées de boue

    Event on 23/11/2000, order published in the Journal officiel on 14/06/2001.

  27. Inondations et/ou coulées de boue

    Event from 05/11/2000 to 06/11/2000, order published in the Journal officiel on 29/12/2000.

  28. Inondations et/ou coulées de boue

    Event from 11/01/1996 to 12/01/1996, order published in the Journal officiel on 14/02/1996.

  29. Inondations et/ou coulées de boue

    Event from 04/11/1994 to 06/11/1994, order published in the Journal officiel on 25/11/1994.

  30. Inondations et/ou coulées de boue

    Event from 26/06/1994 to 27/06/1994, order published in the Journal officiel on 30/06/1994.

  31. Glissement de terrain

    Event on 26/06/1994, order published in the Journal officiel on 07/05/1995.

  32. Inondations et/ou coulées de boue

    Event from 06/01/1994 to 13/01/1994, order published in the Journal officiel on 29/04/1994.

  33. Inondations et/ou coulées de boue

    Event from 05/10/1993 to 10/10/1993, order published in the Journal officiel on 24/10/1993.

  34. Glissement de terrain

    Event from 24/04/1993 to 29/04/1993, order published in the Journal officiel on 03/09/1993.

  35. Inondations et/ou coulées de boue

    Event from 10/10/1987 to 11/10/1987, order published in the Journal officiel on 16/01/1988.

  36. Tempête

    Event from 06/11/1982 to 10/11/1982, order published in the Journal officiel on 22/12/1982.

Earthquakes and radon

Seismic zone

Zone 3 of 5: moderate. This regulatory zoning, in force since 2011, sets the rules for earthquake-resistant construction.

Radon potential

Category 3 of 3: significant potential. At least part of the commune has higher-than-average 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…).

No ground movement recorded (landslides, rockfalls, collapses, mudflows…).

See cavities and ground movements on the map

Risk prevention plans

  • PPRN-IF - Pégomas 2001

    Natural risk prevention plan.

  • PPRN-I - BV Siagne 2021 Révision 2

    Natural risk prevention plan, under revision.

The zoning and regulations of each plan, which may prohibit or restrict building, can be consulted at the town hall and on Géorisques.

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 02/11/2026. 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.