dataset · Wales
National Forest Inventory Wales 2025
The National Forest Inventory (NFI) woodland map covers all forest and woodland area over 0.5 hectare with a minimum of 20% canopy cover, or the potential to achieve it, and a minimum width of 20 metres. This includes areas of new planting, clearfell, windblow and restock. The woodland map excludes all 'tarmac' roads and active railways, and forest roads, rivers and powerlines where the gap in the woodland is greater than 20 meters wide. All woodland (both urban and rural), regardless of ownersh
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Licence: ["There are no public access constraints to this data. Use of this data is subject to the licence identified.", "There are no public access constraints to this data. Use of this data is subject to the
Evidence quality: 44.6
Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata checked: 2026-10-14T13:20:00.000Z
What's in it
- Data offered docs-verified
- woodland map (forest and woodland polygons over 0.5 ha, minimum 20% canopy cover) · interpreted forest type (IFT) classes · interpreted open area (IOA) classes
- Coverage docs-verified
- Wales · 2025 edition; canopy change identified from imagery of spring/summer 2025
- Resolution docs-verified
- Minimum mapping unit 0.5 ha (0.1 ha for Assumed woodland or Low density areas); minimum woodland width 20 m; no pixel resolution stated
- Update frequency docs-verified
- Annual
- Access docs-verified
- Free and open under the Open Government Licence v3.0; no public access constraints; no API key or auth
Useful for
- Use cases llm-inferred
- Woodland cover baseline for FRA or drainage catchment land-use inputs · Pre-screening woodland habitat extent for BNG baselines on Welsh sites · Checking woodland cover and clearfell or restock areas near planning or civils schemes in Wales
- Audience llm-inferred
- ecologists · planners · GIS analysts · hydrologists · flood consultants
Limitations
- Constraints docs-verified
- Wales only · Woodland under 0.5 ha is not mapped; it is covered only by a separate sample survey · Excludes tarmac roads, active railways, and forest roads, rivers and powerlines where the gap exceeds 20 m · Transition areas with more than 19 years between assessments are included · Data download formats are not stated in DOCS
Evidence
- https://data-forestry.opendata.arcgis.com/datasets/e30cfc35f5a54aa1af346b19a5fdcbc8/about
- https://www.data.gov.uk/dataset/8a517381-0592-4d92-a0fd-d0b7e180dc39/national-forest-inventory-wales-2025
Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.