Rochecorbon: geology and natural hazards

Seismic zone

1 of 5 (very low)

Radon potential

Category 1 of 3 (low potential)

Recognised natural disasters

28 since 1989

Underground cavities recorded

216

Ground movements recorded

57

Risk prevention plans

2

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

• Inondation
• Mouvement de terrain

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

• Sécheresse: 10
• Inondations et/ou coulées de boue: 9
• Mouvement de terrain: 9
• Effondrement et/ou affaisement: 1

1. Sécheresse

   Event from 01/07/2022 to 30/09/2022, order published in the Journal officiel on 08/09/2023.

2. Mouvement de terrain

   Event on 31/12/2020, order published in the Journal officiel on 28/03/2021.

3. Sécheresse

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

4. Sécheresse

   Event from 01/10/2018 to 31/12/2018, order published in the Journal officiel on 17/07/2019.

5. Inondations et/ou coulées de boue

   Event on 11/06/2018, order published in the Journal officiel on 20/10/2018.

6. Sécheresse

   Event from 01/04/2011 to 30/06/2011, order published in the Journal officiel on 17/07/2012.

7. Mouvement de terrain

   Event on 30/04/2010, order published in the Journal officiel on 17/09/2010.

8. Inondations et/ou coulées de boue

   Event on 31/05/2008, order published in the Journal officiel on 05/07/2008.

9. Inondations et/ou coulées de boue

   Event from 31/05/2008 to 01/06/2008, order published in the Journal officiel on 13/08/2008.

10. Mouvement de terrain

    Event on 31/05/2008, order published in the Journal officiel on 13/08/2008.

11. Sécheresse

    Event from 01/07/2005 to 30/09/2005, order published in the Journal officiel on 22/02/2008.

12. Inondations et/ou coulées de boue

    Event from 08/12/2003 to 10/12/2003, order published in the Journal officiel on 23/05/2004.

13. Mouvement de terrain

    Event on 29/08/2001, order published in the Journal officiel on 28/03/2002.

14. Inondations et/ou coulées de boue

    Event on 01/05/2001, order published in the Journal officiel on 18/01/2002.

15. Mouvement de terrain

    Event on 18/03/2001, order published in the Journal officiel on 01/12/2001.

16. Mouvement de terrain

    Event from 08/02/2001 to 09/02/2001, order published in the Journal officiel on 01/12/2001.

17. Mouvement de terrain

    Event on 20/11/2000, order published in the Journal officiel on 01/12/2001.

18. 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.

19. Inondations et/ou coulées de boue

    Event on 05/08/1997, order published in the Journal officiel on 28/03/1998.

20. Inondations et/ou coulées de boue

    Event on 04/07/1997, order published in the Journal officiel on 28/03/1998.

21. Effondrement et/ou affaisement

    Event on 23/07/1995, order published in the Journal officiel on 28/01/1996.

22. Mouvement de terrain

    Event from 01/01/1995 to 31/01/1995, order published in the Journal officiel on 03/08/1995.

23. Inondations et/ou coulées de boue

    Event on 09/08/1994, order published in the Journal officiel on 24/11/1994.

24. Sécheresse

    Event from 01/01/1994 to 31/12/1996, order published in the Journal officiel on 28/03/1998.

25. Sécheresse

    Event from 01/01/1992 to 30/04/1993, order published in the Journal officiel on 10/06/1994.

26. Sécheresse

    Event from 01/12/1990 to 31/12/1991, order published in the Journal officiel on 07/02/1993.

27. Sécheresse

    Event from 01/03/1990 to 30/11/1990, order published in the Journal officiel on 30/08/1991.

28. Sécheresse

    Event from 01/06/1989 to 31/12/1989, order published in the Journal officiel on 15/12/1990.

Seismic zone

Zone 1 of 5: very 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.

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.

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

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

See cavities and ground movements on the map

• PER sur la commune Rochecorbon

  Natural risk prevention plan.

• PPRI - Val de Tours - Val de Luynes (révision)

  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.

• La Ville-aux-Dames (37)
• Parçay-Meslay (37)
• Vouvray (37)
• Saint-Pierre-des-Corps (37)
• Larçay (37)
• Tours (37)
• Saint-Avertin (37)
• Notre-Dame-d’Oé (37)

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.