Cannes: geology and natural hazards

Seismic zone

3 of 5 (moderate)

Radon potential

Category 3 of 3 (significant potential)

Recognised natural disasters

51 since 1982

Underground cavities recorded

4

Ground movements recorded

6

Risk prevention plans

2

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, par submersion marine
• Mouvement de terrain: glissement de terrain, recul du trait de côte et de falaises, tassements différentiels
• Séisme
• Feu de forêt
• Radon
• Rupture de barrage
• Transport de marchandises dangereuses

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

• Inondations et/ou coulées de boue: 23
• Chocs mécaniques liés à l’action des vagues: 14
• Sécheresse: 8
• Mouvement de terrain: 4
• Glissement de terrain: 2
• Tempête: 1

1. Inondations et/ou coulées de boue

   Event on 22/09/2024, order published in the Journal officiel on 20/12/2024.

2. Sécheresse

   Event from 31/03/2023 to 29/06/2023, order published in the Journal officiel on 02/08/2024.

3. Chocs mécaniques liés à l’action des vagues

   Event from 17/01/2023 to 18/01/2023, order published in the Journal officiel on 07/07/2023.

4. Sécheresse

   Event from 01/04/2022 to 30/09/2022, order published in the Journal officiel on 08/09/2023.

5. Chocs mécaniques liés à l’action des vagues

   Event from 20/12/2019 to 21/12/2019, order published in the Journal officiel on 13/03/2020.

6. 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.

7. Mouvement de terrain

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

8. 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.

9. Chocs mécaniques liés à l’action des vagues

   Event from 23/11/2019 to 24/11/2019, order published in the Journal officiel on 29/01/2020.

10. Mouvement de terrain

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

11. Inondations et/ou coulées de boue

    Event on 03/10/2015, order published in the Journal officiel on 08/10/2015.

12. Mouvement de terrain

    Event from 03/10/2015 to 04/10/2015, order published in the Journal officiel on 27/01/2017.

13. Inondations et/ou coulées de boue

    Event from 04/11/2014 to 05/11/2014, order published in the Journal officiel on 06/01/2015.

14. Chocs mécaniques liés à l’action des vagues

    Event on 08/11/2011, order published in the Journal officiel on 03/01/2012.

15. 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.

16. Chocs mécaniques liés à l’action des vagues

    Event on 04/05/2010, order published in the Journal officiel on 26/06/2010.

17. Chocs mécaniques liés à l’action des vagues

    Event on 19/02/2010, order published in the Journal officiel on 26/06/2010.

18. Chocs mécaniques liés à l’action des vagues

    Event on 01/01/2010, order published in the Journal officiel on 13/05/2010.

19. Chocs mécaniques liés à l’action des vagues

    Event from 22/12/2009 to 25/12/2009, order published in the Journal officiel on 13/05/2010.

20. Inondations et/ou coulées de boue

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

21. Inondations et/ou coulées de boue

    Event on 15/09/2009, order published in the Journal officiel on 14/11/2009.

22. Chocs mécaniques liés à l’action des vagues

    Event from 14/12/2008 to 15/12/2008, order published in the Journal officiel on 21/05/2009.

23. Chocs mécaniques liés à l’action des vagues

    Event from 30/11/2008 to 01/12/2008, order published in the Journal officiel on 21/05/2009.

24. Sécheresse

    Event from 01/07/2007 to 30/09/2007, order published in the Journal officiel on 18/03/2009.

25. Sécheresse

    Event from 01/01/2007 to 31/03/2007, order published in the Journal officiel on 18/03/2009.

26. Sécheresse

    Event from 01/01/2006 to 31/03/2006, order published in the Journal officiel on 18/03/2009.

27. Inondations et/ou coulées de boue

    Event from 08/09/2005 to 09/09/2005, order published in the Journal officiel on 30/12/2005.

28. Sécheresse

    Event from 01/01/2005 to 31/03/2005, order published in the Journal officiel on 13/12/2009.

29. Inondations et/ou coulées de boue

    Event on 05/08/2004, order published in the Journal officiel on 15/01/2005.

30. Sécheresse

    Event from 01/07/2004 to 30/09/2004, order published in the Journal officiel on 18/03/2009.

31. Sécheresse

    Event from 01/01/2004 to 31/03/2004, order published in the Journal officiel on 18/03/2009.

32. Chocs mécaniques liés à l’action des vagues

    Event from 31/10/2003 to 01/11/2003, order published in the Journal officiel on 23/05/2004.

33. Inondations et/ou coulées de boue

    Event from 24/12/2000 to 25/12/2000, order published in the Journal officiel on 26/09/2001.

34. Chocs mécaniques liés à l’action des vagues

    Event on 06/11/2000, order published in the Journal officiel on 23/03/2001.

35. 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.

36. Inondations et/ou coulées de boue

    Event from 23/10/1999 to 24/10/1999, order published in the Journal officiel on 19/03/2000.

37. Inondations et/ou coulées de boue

    Event on 05/09/1998, order published in the Journal officiel on 10/03/1999.

38. 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.

39. Mouvement de terrain

    Event from 11/01/1996 to 12/01/1996, order published in the Journal officiel on 17/04/1996.

40. 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.

41. Glissement de terrain, Inondations et/ou coulées de boue

    Event from 26/06/1994 to 27/06/1994, order published in the Journal officiel on 24/11/1994.

42. 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.

43. Glissement de terrain

    Event from 05/10/1993 to 10/10/1993, order published in the Journal officiel on 31/01/1995.

44. Chocs mécaniques liés à l’action des vagues

    Event on 05/12/1992, order published in the Journal officiel on 28/03/1993.

45. Inondations et/ou coulées de boue

    Event from 28/09/1991 to 30/09/1991, order published in the Journal officiel on 15/10/1992.

46. Inondations et/ou coulées de boue

    Event from 25/02/1989 to 26/02/1989, order published in the Journal officiel on 13/12/1989.

47. Chocs mécaniques liés à l’action des vagues

    Event from 25/02/1989 to 26/02/1989, order published in the Journal officiel on 07/02/1990.

48. 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.

49. Inondations et/ou coulées de boue

    Event from 04/10/1987 to 05/10/1987, order published in the Journal officiel on 30/06/1988.

50. Tempête

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

51. Inondations et/ou coulées de boue

    Event from 06/11/1982 to 10/11/1982, order published in the Journal officiel on 06/02/1983.

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.

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

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

4 underground cavities recorded (quarries, cellars, military works, natural cavities…).

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

See cavities and ground movements on the map

• PPRN-IF - Cannes 2010

  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.

• Le Cannet (06)
• Vallauris (06)
• Mougins (06)
• La Roquette-sur-Siagne (06)
• Mandelieu-la-Napoule (06)
• Théoule-sur-Mer (06)
• Pégomas (06)
• Mouans-Sartoux (06)

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.