Buying a home in Colonno
447 residents at the 2021 census, 528 buildings and 5.6 km² of territory, Lombardia.
Colonno is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low. According to ISPRA’s mosaic, 9.5% of the territory of Colonno has high or very high landslide hazard (P3 and P4), with 11.2% of the residents. 32.8% of the territory of Colonno is in the flood area of the medium-probability scenario (P2), with 9.6% of the residents.
Find your address in Colonno
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Colonno compared
| ISPRA indicator | Colonno | CO | Lombardia |
|---|---|---|---|
| Landslide, very high hazard (P4) | 6% | 3.2% | 3.7% |
| Landslide, high hazard (P3) | 3.5% | 4.9% | 2.9% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 11.2% | 0.9% | 0.4% |
| Buildings in landslide areas P3-P4 | 14% | 2.2% | 1.1% |
| Flood, high probability (P3) | 32.6% | 9.2% | 7.9% |
| Flood, medium probability (P2) | 32.8% | 10.1% | 10.2% |
| Flood, low probability (P1) | 32.8% | 11.4% | 20.3% |
| Residents in P2 flood areas | 9.6% | 1.7% | 4.4% |
| Buildings in P2 flood areas | 5.6% | 2.1% | 4.7% |
Questions
Which seismic zone is Colonno in?
Colonno is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low.
How much of Colonno is in landslide class P3/P4?
According to ISPRA’s mosaic, 9.5% of the territory of Colonno has high or very high landslide hazard (P3 and P4), with 11.2% of the residents. By share of territory with landslide hazard P3-P4, Colonno ranks 29th of 147 municipalities in the province of Como.
How much of Colonno is in flood scenario P2?
32.8% of the territory of Colonno is in the flood area of the medium-probability scenario (P2), with 9.6% of the residents. By share of territory in the P2 flood area, Colonno ranks 14th of 147 municipalities in the province of Como.
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 |
|---|---|---|---|
| Sala Comacina | 4 | 4.3% | 20.9% |
| Pigra | 4 | 20.1% | 0% |
| Argegno | 4 | 7% | 54.2% |
| Dizzasco | 4 | 10.5% | 2.2% |
| Blessagno | 4 | 3.7% | 0% |
| Tremezzina | 4 | 7.7% | 25.3% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on