A rating from 0 to 10 of how often the area around a property floods, where higher numbers mean the surrounding area floods less often. It reflects the area, not the individual home.
A low score does not always mean this home will flood. It might sit on higher ground and stay dry, but a nearby flood plain can still affect it a great deal, because flooding damages surrounding roads, utilities, and services and drags on value and insurance across the whole area. Use a low score as a prompt to look into whether this particular home is genuinely at risk.
In the Netherlands this is the yearly chance of a flood at the home from the national flood information system (LIWO), which counts every flood the national flood database models, from the sea, the rivers and the regional waters, and today's failure chances of the dikes. A chance of more than 1 in 30 a year scores as the 20 year floodplain does elsewhere, 1 in 30 to 1 in 300 as the 100 year one, 1 in 300 to 1 in 3,000 as the 500 year one, 1 in 3,000 to 1 in 30,000 scores 8, and a smaller chance scores 10, less one or two where the water would be over 0.5 m or 2 m deep. Because the dikes are counted, Dutch scores are not comparable with the countries scored without flood defences.
| Median | Mean | Mode |
|---|---|---|
From 12,061 homes | From 12,061 homes | From 12,061 homes |
Data updated November 14, 2026
| Location | Median | Mean | Mode |
|---|---|---|---|
| Unknown | - | - | - |