Lento: geology and natural hazards

Seismic zone

1 of 5 (very low)

Radon potential

Category 3 of 3 (significant potential)

Recognised natural disasters

10 since 1993

Underground cavities recorded

1

Ground movements recorded

9

Risk prevention plans

1

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

• Inondation: par submersion marine
• Séisme
• Feu de forêt
• Radon
• Rupture de barrage

10 events recognised as a natural disaster by ministerial order since 1993.

• Inondations et/ou coulées de boue: 10

1. Inondations et/ou coulées de boue

   Event from 23/12/2025 to 25/12/2025, order published in the Journal officiel on 17/03/2026.

2. Inondations et/ou coulées de boue

   Event from 15/03/2015 to 17/03/2015, order published in the Journal officiel on 07/06/2015.

3. Inondations et/ou coulées de boue

   Event from 27/11/2014 to 29/11/2014, order published in the Journal officiel on 19/02/2015.

4. Inondations et/ou coulées de boue

   Event from 04/11/2011 to 05/11/2011, order published in the Journal officiel on 19/11/2011.

5. Inondations et/ou coulées de boue

   Event from 27/11/2008 to 28/11/2008, order published in the Journal officiel on 18/03/2009.

6. Inondations et/ou coulées de boue

   Event from 30/10/2007 to 31/10/2007, order published in the Journal officiel on 04/04/2008.

7. Inondations et/ou coulées de boue

   Event on 14/09/2006, order published in the Journal officiel on 01/04/2007.

8. 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.

9. Inondations et/ou coulées de boue

   Event from 31/10/1993 to 02/11/1993, order published in the Journal officiel on 15/12/1993.

10. Inondations et/ou coulées de boue

    Event from 23/09/1993 to 24/09/1993, order published in the Journal officiel on 10/06/1994.

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 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.

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

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

See cavities and ground movements on the map

• PPRN-I - GOLO BASTIA SUD_LENTO

  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.

• Bigorno (2B)
• Canavaggia (2B)
• Campitello (2B)
• Bisinchi (2B)
• Volpajola (2B)
• Piève (2B)
• Scolca (2B)
• Sorio (2B)

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.