{
 "id": "properties-at-surface-water-risk-wales",
 "title": "Properties at risk of flooding from surface water, Wales",
 "category": "energy-environment",
 "summary": "Homes and other properties in Wales at high, medium and low risk of flooding from surface water and small watercourses, in Natural Resources Wales's assessments of 2024 and 2025.",
 "unit": "count",
 "chart": "column",
 "volatile": false,
 "status": "Not official statistics",
 "notes": [
  "High risk is a chance of flooding greater than 1 in 30 each year; medium between 1 in 30 and 1 in 100; low between 1 in 100 and 1 in 1,000. NRW's figures for surface water are the same with defences and without.",
  "Natural Resources Wales's figures carry no statistical designation, and it replaces the dataset rather than revising it. It also gives a forecast for 2120, which the hub leaves out."
 ],
 "provenance": {
  "publisher": "Natural Resources Wales, through the Welsh Government",
  "publisher_url": "https://www.gov.wales/statistics-and-research",
  "source_page": "https://stats.gov.wales/en-GB/44557520-6234-4a77-9263-cabfc00f4d72",
  "licence": "OGL-3.0",
  "licence_name": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0.",
  "retrieved_at": "2026-11-01T21:05:02Z",
  "raw_files": [
   {
    "name": "metadata.json",
    "url": "https://api.stats.gov.wales/v2/44557520-6234-4a77-9263-cabfc00f4d72",
    "sha256": "99ae1bf9175a1df355dc324ec5e945e4caafa12fd92491699b011aba92795d68",
    "bytes": 13597,
    "content_type": "application/json; charset=utf-8"
   },
   {
    "name": "data.csv",
    "url": "https://api.stats.gov.wales/v2/44557520-6234-4a77-9263-cabfc00f4d72/data?format=csv",
    "sha256": "7d4af931029544525a5d81d1cd7510b40a3f760722e98e34416e8256488a2141",
    "bytes": 439850,
    "content_type": "text/csv"
   }
  ]
 },
 "meta": {
  "latest_period": "2025-12-31",
  "statswales_title": "Properties at risk of flooding in Wales",
  "designation": "none",
  "published": "2026-06-26T08:30:00.000Z"
 },
 "headline": {
  "label": "Surface water, high risk",
  "value": 39869.0,
  "period": "2025"
 },
 "series": [
  {
   "name": "Surface water, high risk",
   "points": [
    {
     "x": "2024",
     "v": 39720.0
    },
    {
     "x": "2025",
     "v": 39869.0
    }
   ]
  },
  {
   "name": "Surface water, medium risk",
   "points": [
    {
     "x": "2024",
     "v": 20687.0
    },
    {
     "x": "2025",
     "v": 20778.0
    }
   ]
  },
  {
   "name": "Surface water, low risk",
   "points": [
    {
     "x": "2024",
     "v": 83267.0
    },
    {
     "x": "2025",
     "v": 83605.0
    }
   ]
  }
 ]
}