Province of Biella
Natural hazards and seismic zone municipality by municipality, for home buyers.
According to ISPRA’s mosaic, 1.4% of the territory of the province of Biella has high or very high landslide hazard (P3 and P4), with 0.8% of the residents. 4.2% of the territory of the province of Biella is in the flood area of the medium-probability scenario (P2), with 3.4% of the residents. Among Italy’s 107 provinces it ranks 81st for landslide hazard P3-P4 and 71st for flood area (P2).
Municipalities by seismic zone: 24 in zone 3, 50 in zone 4.
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Municipalities by share of territory in landslide class P3/P4
| Valle San Nicolao | 7.3% |
|---|---|
| Valdilana | 5.1% |
| Pettinengo | 5% |
| Veglio | 4.3% |
| Bioglio | 4.2% |
| Ternengo | 4.1% |
| Occhieppo Superiore | 4% |
| Campiglia Cervo | 3.8% |
| Biella | 3.7% |
| Valdengo | 3.5% |
Municipalities by share of territory in flood scenario P2
| Gifflenga | 32.9% |
|---|---|
| Occhieppo Inferiore | 28.3% |
| Borriana | 24.1% |
| Cerrione | 18.3% |
| Cossato | 16.3% |
| Castelletto Cervo | 14.3% |
| Salussola | 13.5% |
| Mongrando | 11.8% |
| Ponderano | 11.3% |
| Miagliano | 10.6% |
All 74 municipalities
Landslides and floods in the province
| ISPRA indicator | BI | Piemonte |
|---|---|---|
| Landslide, very high hazard (P4) | 0.5% | 3.1% |
| Landslide, high hazard (P3) | 1% | 3.7% |
| Landslide, areas of attention | 0% | 0% |
| Residents in landslide areas P3-P4 | 0.8% | 1.8% |
| Buildings in landslide areas P3-P4 | 1.1% | 4.4% |
| Flood, high probability (P3) | 2.6% | 5.1% |
| Flood, medium probability (P2) | 4.2% | 8.3% |
| Flood, low probability (P1) | 6.5% | 13% |
| Residents in P2 flood areas | 3.4% | 4.9% |
| Buildings in P2 flood areas | 3.1% | 5.8% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on