Buying a home in Graffignano
2,120 residents at the 2021 census, 1,287 buildings and 29.1 km² of territory, Lazio.
Graffignano is in seismic zone 2 (the region uses the sub-zones 2B): in this zone strong earthquakes are possible. According to ISPRA’s mosaic, 0.9% of the territory of Graffignano has high or very high landslide hazard (P3 and P4), with 1.8% of the residents. 11.2% of the territory of Graffignano is in the flood area of the medium-probability scenario (P2), with 0.1% of the residents.
Find your address in Graffignano
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Graffignano compared
| ISPRA indicator | Graffignano | VT | Lazio |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0.1% | 0.9% | 4.3% |
| Landslide, high hazard (P3) | 0.8% | 2.7% | 1.2% |
| Landslide, areas of attention | 0% | 1.9% | 8.3% |
| Residents in landslide areas P3-P4 | 1.8% | 4.5% | 1.5% |
| Buildings in landslide areas P3-P4 | 1.9% | 4.1% | 3.2% |
| Flood, high probability (P3) | 11.2% | 2.4% | 2.6% |
| Flood, medium probability (P2) | 11.2% | 3% | 3.5% |
| Flood, low probability (P1) | 11.3% | 3.4% | 5.7% |
| Residents in P2 flood areas | 0.1% | 1% | 3.2% |
| Buildings in P2 flood areas | 0.2% | 1.7% | 3.4% |
Questions
Which seismic zone is Graffignano in?
Graffignano is in seismic zone 2 (the region uses the sub-zones 2B): in this zone strong earthquakes are possible.
How much of Graffignano is in landslide class P3/P4?
According to ISPRA’s mosaic, 0.9% of the territory of Graffignano has high or very high landslide hazard (P3 and P4), with 1.8% of the residents. By share of territory with landslide hazard P3-P4, Graffignano ranks 36th of 60 municipalities in the province of Viterbo, tied with 1 others.
How much of Graffignano is in flood scenario P2?
11.2% of the territory of Graffignano is in the flood area of the medium-probability scenario (P2), with 0.1% of the residents. By share of territory in the P2 flood area, Graffignano ranks 4th of 60 municipalities in the province of Viterbo.
Guides: seismic zone · landslides and floods · what to check before an offer. OMI prices: GEOPOI (how to read them).
Nearby municipalities
| Municipality | Seismic zone | Landslide P3-P4 | Flood P2 |
|---|---|---|---|
| Alviano | 3 | 4.3% | 8.2% |
| Civitella d’Agliano | 2B | 5.5% | 0.8% |
| Lugnano in Teverina | 3 | 5.5% | 0.3% |
| Bomarzo | 2B | 3% | 13.1% |
| Attigliano | 3 | 0.5% | 32.1% |
| Celleno | 2B | 10.7% | 0% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on