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Haute-Savoie (74)

Manigod: geology and natural hazards

What public services say about the ground beneath the commune (population 1,000) 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

Manigod at a glance

Seismic zone
4 of 5 (medium)
Radon potential
Category 1 of 3 (low potential)
Recognised natural disasters
12 since 1982
Underground cavities recorded
None
Ground movements recorded
7
Risk prevention plans
1

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, par lave torrentielle (torrent et talweg), par remontées de nappes naturelles
  • Mouvement de terrain: eboulement ou chutes de pierres et de blocs, glissement de terrain
  • Séisme
  • Avalanche
  • Radon
  • Risque industriel: effet de surpression
  • Engins de guerre

Recognised natural disasters

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

  • Inondations et/ou coulées de boue: 7
  • Glissement de terrain: 3
  • Secousse sismique: 2
  • Mouvement de terrain: 1
  • Tempête: 1

  1. Inondations et/ou coulées de boue

    Event from 03/01/2018 to 05/01/2018, order published in the Journal officiel on 10/03/2018.

  2. Mouvement de terrain

    Event from 30/04/2015 to 04/05/2015, order published in the Journal officiel on 22/07/2015.

  3. Inondations et/ou coulées de boue

    Event from 30/04/2015 to 02/05/2015, order published in the Journal officiel on 22/07/2015.

  4. Inondations et/ou coulées de boue

    Event on 05/08/1997, order published in the Journal officiel on 29/07/1998.

  5. Secousse sismique

    Event from 15/07/1996 to 23/07/1996, order published in the Journal officiel on 17/10/1996.

  6. Secousse sismique

    Event on 14/12/1994, order published in the Journal officiel on 07/05/1995.

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

    Event from 31/12/1993 to 01/01/1994, order published in the Journal officiel on 25/06/1994.

  8. Inondations et/ou coulées de boue

    Event from 19/12/1993 to 21/12/1993, order published in the Journal officiel on 25/06/1994.

  9. Glissement de terrain

    Event from 26/11/1992 to 27/11/1992, order published in the Journal officiel on 08/07/1993.

  10. Glissement de terrain

    Event from 25/10/1992 to 26/10/1992, order published in the Journal officiel on 03/09/1993.

  11. Inondations et/ou coulées de boue

    Event from 10/02/1990 to 17/02/1990, order published in the Journal officiel on 23/03/1990.

  12. Inondations et/ou coulées de boue, Tempête

    Event from 06/11/1982 to 10/11/1982, order published in the Journal officiel on 19/11/1982.

Earthquakes and radon

Seismic zone

Zone 4 of 5: medium. 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…).

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

See cavities and ground movements on the map

Risk prevention plans

  • PPR Manigod

    Natural risk prevention plan.

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.