Netherlands flood risk (overstromingsrisico) per address from Rijkswaterstaat LI
Netherlands flood risk (overstromingsrisico) per address from Rijkswaterstaat LIWO: annual probability that the location floods (any water, over 20, 50 and 200 cm), 2050 and 2100 climate scenarios, worst-case modelled water depth, and ground height vs sea level (AHN). Climate and physical risk data for real estate, mortgage, insurance, ESG and relocation agents. Input: postcode + house number.
Answeringour last check, 2026-10-10
1 of 1checks answered this week
659 msmedian answer time
$0.004listed price per call
$0.004price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://factline.dev/v1/flood-risk
| Category | Everything else |
|---|---|
| Provider host | factline.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-10 | valid payment request | 402 | $0.004 | 659 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"house_number": 100,
"postcode": "2517AS"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"addition": {
"description": "Optional house number addition, e.g. 2 or BIS",
"type": "string"
},
"house_letter": {
"description": "Optional house letter, e.g. A",
"type": "string"
},
"house_number": {
"description": "House number, e.g. 1",
"minimum": 1,
"type": "integer"
},
"postcode": {
"description": "Dutch postcode, 4 digits + 2 letters, e.g. 3511LX",
"pattern": "^[1-9][0-9]{3} ?[A-Za-z]{2}$",
"type": "string"
},
"q": {
"description": "Alternative to postcode: free-text address, e.g. 'Visschersplein 1 Utrecht'",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}