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Metropolitan City of Napoli

Natural hazards and seismic zone municipality by municipality, for home buyers.

According to ISPRA’s mosaic, 16.8% of the territory of the Metropolitan City of Napoli has high or very high landslide hazard (P3 and P4), with 3.2% of the residents. 4.2% of the territory of the Metropolitan City of Napoli is in the flood area of the medium-probability scenario (P2), with 3.4% of the residents. Among Italy’s 107 provinces it ranks 21st for landslide hazard P3-P4 and 70th for flood area (P2).

Municipalities by seismic zone: 76 in zone 2, 16 in zone 3.

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Municipalities by share of territory in landslide class P3/P4

Pimonte71.6%
Lettere71.1%
Agerola69.1%
Gragnano61.8%
Casamicciola Terme59.8%
Serrara Fontana58.5%
Massa di Somma56.6%
Barano d’Ischia56.5%
Meta55.6%
Vico Equense54.2%

Municipalities by share of territory in flood scenario P2

Cicciano39.2%
Grumo Nevano32%
Casandrino28.8%
Cimitile26%
Pollena Trocchia18.6%
Tufino18.2%
Pompei17.1%
Melito di Napoli15.8%
Ottaviano15.7%
Camposano14.8%

All 92 municipalities

MunicipalitySeismic zoneLandslide P3-P4Flood P2
Acerra20%0.9%
Afragola20%0%
Agerola369.1%0.1%
Anacapri335.5%0%
Arzano20%0.3%
Bacoli212.2%2.1%
Barano d’Ischia256.5%6.3%
Boscoreale20%1.2%
Boscotrecase24.2%4.7%
Brusciano20%0%
Caivano20%0%
Calvizzano21.5%10%
Camposano20%14.8%
Capri334%1.5%
Carbonara di Nola247.2%5.8%
Cardito20%0%
Casalnuovo di Napoli20%0.1%
Casamarciano241.9%2.4%
Casamicciola Terme259.8%4.9%
Casandrino20%28.8%
Casavatore20%0%
Casola di Napoli353.4%5.4%
Casoria20%0%
Castellammare di Stabia343.9%10.2%
Castello di Cisterna20%0%
Cercola20%0.7%
Cicciano20.1%39.2%
Cimitile20%26%
Comiziano20%3.4%
Crispano20%0%
Ercolano215.1%6.5%
Forio242.5%2%
Frattamaggiore20%8.3%
Frattaminore20%8.6%
Giugliano in Campania20.1%0.2%
Gragnano361.8%3.7%
Grumo Nevano20%32%
Ischia240.2%3.3%
Lacco Ameno226.2%6.7%
Lettere371.1%1%
Liveri214.4%14.1%
Marano di Napoli221%3.9%
Mariglianella20%0%
Marigliano20%0.3%
Massa di Somma256.6%1%
Massa Lubrense329.6%1.3%
Melito di Napoli20%15.8%
Meta355.6%3.4%
Monte di Procida230.9%2.3%
Mugnano di Napoli20%2.6%
Napoli212.4%1.7%
Nola23.8%8.7%
Ottaviano227%15.7%
Palma Campania217.9%1.7%
Piano di Sorrento326%1.6%
Pimonte371.6%2.6%
Poggiomarino20%4.5%
Pollena Trocchia230.8%18.6%
Pomigliano d’Arco20%0%
Pompei20%17.1%
Portici20%0.2%
Pozzuoli224.2%1.6%
Procida218.6%0.9%
Qualiano20.1%5.6%
Quarto25.6%2.5%
Roccarainola247.3%7.2%
San Gennaro Vesuviano20%0%
San Giorgio a Cremano20%2.5%
San Giuseppe Vesuviano26.2%6.9%
San Paolo Bel Sito28%4.4%
San Sebastiano al Vesuvio22.4%0.1%
San Vitaliano20%6.5%
Sant’Agnello330.3%3.5%
Sant’Anastasia223.8%9.5%
Sant’Antimo20%3.9%
Sant’Antonio Abate33.9%8.6%
Santa Maria la Carità30%0.8%
Saviano20%1.5%
Scisciano20%0%
Serrara Fontana258.5%10.1%
Somma Vesuviana228.3%13.6%
Sorrento322.3%1.5%
Striano20%8.7%
Terzigno214.1%4.5%
Torre Annunziata20%7%
Torre del Greco24.9%3.5%
Trecase22.1%10.4%
Tufino26%18.2%
Vico Equense354.2%1.3%
Villaricca20.8%2.8%
Visciano242%1.7%
Volla20%0.6%

Landslides and floods in the province

ISPRA indicatorNACampania
Landslide, very high hazard (P4)9.1%9.5%
Landslide, high hazard (P3)7.8%10.1%
Landslide, areas of attention0%22%
Residents in landslide areas P3-P43.2%4.7%
Buildings in landslide areas P3-P46.5%9.2%
Flood, high probability (P3)2.8%2.5%
Flood, medium probability (P2)4.2%5.7%
Flood, low probability (P1)5.4%6.2%
Residents in P2 flood areas3.4%5.1%
Buildings in P2 flood areas4.3%5.9%

Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).

Updated on