Province of Sondrio

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

According to ISPRA’s mosaic, 14.5% of the territory of the province of Sondrio has high or very high landslide hazard (P3 and P4), with 3.2% of the residents. 4.7% of the territory of the province of Sondrio is in the flood area of the medium-probability scenario (P2), with 5% of the residents. Among Italy’s 107 provinces it ranks 26th for landslide hazard P3-P4 and 62nd for flood area (P2).

Municipalities by seismic zone: 64 in zone 3, 13 in zone 4.

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Municipalities by share of territory in landslide class P3/P4

Novate Mezzola	63.8%
Chiavenna	57.1%
Bormio	39.9%
Sondalo	31%
Samolaco	30.8%
Rogolo	30%
Aprica	28.9%
Sondrio	28.6%
Gordona	28.2%
Ponte in Valtellina	26%

Municipalities by share of territory in flood scenario P2

Mantello	40.2%
Delebio	26.2%
Poggiridenti	24.1%
Dubino	22.8%
Verceia	22.7%
Mese	20.4%
Traona	15.7%
Sondrio	13.7%
Samolaco	13.2%
Talamona	12.7%

All 77 municipalities

Municipality	Seismic zone	Landslide P3-P4	Flood P2
Albaredo per San Marco	3	15.2%	0.9%
Albosaggia	3	1.1%	9%
Andalo Valtellino	4	23.4%	6.5%
Aprica	3	28.9%	7.4%
Ardenno	3	13.1%	4.2%
Bema	3	7.7%	0%
Berbenno di Valtellina	3	13.3%	3.5%
Bianzone	3	3.5%	1.2%
Bormio	3	39.9%	7.6%
Buglio in Monte	3	6.5%	3.5%
Caiolo	3	3.8%	6.5%
Campodolcino	3	12.2%	3.4%
Caspoggio	3	16.4%	0.3%
Castello dell’Acqua	3	2.7%	4.5%
Castione Andevenno	3	3.4%	6.5%
Cedrasco	3	4.3%	5.9%
Cercino	4	0.2%	7.2%
Chiavenna	3	57.1%	5.8%
Chiesa in Valmalenco	3	4%	3.1%
Chiuro	3	3.8%	4.2%
Cino	4	2.9%	0%
Civo	3	12.9%	0.8%
Colorina	3	10.6%	8.7%
Cosio Valtellino	3	4.3%	3.1%
Dazio	3	20.2%	2.6%
Delebio	4	5.5%	26.2%
Dubino	4	7%	22.8%
Faedo Valtellino	3	7.7%	6.7%
Forcola	3	3.1%	3.2%
Fusine	3	8.5%	5.7%
Gerola Alta	3	4.3%	2.3%
Gordona	4	28.2%	4.9%
Grosio	3	7.5%	3.7%
Grosotto	3	8.6%	2.9%
Lanzada	3	4.3%	2.3%
Livigno	3	11%	3.4%
Lovero	3	8.6%	4.8%
Madesimo	3	21.2%	0.3%
Mantello	4	7.4%	40.2%
Mazzo di Valtellina	3	3.1%	4%
Mello	3	4%	0.7%
Mese	4	19.7%	20.4%
Montagna in Valtellina	3	5.4%	5.8%
Morbegno	3	1.3%	8.3%
Novate Mezzola	3	63.8%	4.1%
Pedesina	4	25.9%	0%
Piantedo	4	5%	3.1%
Piateda	3	1.6%	1.9%
Piuro	3	13.7%	0.6%
Poggiridenti	3	1.8%	24.1%
Ponte in Valtellina	3	26%	1.8%
Postalesio	3	10.4%	7%
Prata Camportaccio	3	19.8%	2.6%
Rasura	4	11.8%	0%
Rogolo	4	30%	4.7%
Samolaco	4	30.8%	13.2%
San Giacomo Filippo	3	24%	0.9%
Sernio	3	20.3%	5%
Sondalo	3	31%	6.5%
Sondrio	3	28.6%	13.7%
Spriana	3	23.8%	2.4%
Talamona	3	18.7%	12.7%
Tartano	3	25.5%	11.4%
Teglio	3	8.4%	7.4%
Tirano	3	12.8%	2.7%
Torre di Santa Maria	3	6.3%	2.7%
Tovo di Sant’Agata	3	2.8%	4.1%
Traona	3	0.7%	15.7%
Tresivio	3	5.8%	2.5%
Val Masino	3	4%	3.2%
Valdidentro	3	24.4%	8.9%
Valdisotto	3	16.3%	4.7%
Valfurva	3	5.7%	2.2%
Verceia	3	15.9%	22.7%
Vervio	3	2.4%	3.8%
Villa di Chiavenna	3	12.3%	0.2%
Villa di Tirano	3	4%	2.7%

Landslides and floods in the province

ISPRA indicator	SO	Lombardia
Landslide, very high hazard (P4)	6.4%	3.7%
Landslide, high hazard (P3)	8.2%	2.9%
Landslide, areas of attention	0%	0%
Residents in landslide areas P3-P4	3.2%	0.4%
Buildings in landslide areas P3-P4	4.1%	1.1%
Flood, high probability (P3)	3.6%	7.9%
Flood, medium probability (P2)	4.7%	10.2%
Flood, low probability (P1)	9%	20.3%
Residents in P2 flood areas	5%	4.4%
Buildings in P2 flood areas	4.3%	4.7%

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

Updated on 25 October 2026