dataset · United Kingdom

OS Terrain 5 DTM

Ordnance Survey’s OS Terrain 5 DTM is a dataset representing the physical shape of the real world. The dataset includes 5 metre GRID. The DTM data is captured from Ordnance Survey’s large scale aerial imagery. The product is updated and maintained quarterly.

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Source details

Licence: ["Use limitation dependent upon licence"]

Evidence quality: 56.8

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: digital terrain model (DTM) elevation · 5 m grid terrain surface
Coverage docs-verified: United Kingdom (metadata bounding box: latitude 49.86° to 60.86°, longitude -8.45° to 1.78°, EPSG:27700)
Resolution docs-verified: 5 m grid
Update frequency docs-verified: Quarterly
Access docs-verified: Use limitation dependent upon licence; no API key or auth listed; price not stated; licence field not set on the listing, so check OS licence terms before use

Useful for

Use cases llm-inferred: FRA topographic baseline and flow-path analysis for a site catchment · Drainage strategy surface routing and catchment delineation · Cut and fill earthworks volume estimates from ground surface · Ground surface input for coarse-scale hydraulic model screening
Audience llm-inferred: flood consultants · drainage engineers · hydrologists · civils engineers · GIS analysts

Limitations

Constraints llm-inferred: Use limitation dependent upon licence, so terms must be checked before commercial use · 5 m grid is coarser than the 1 m DTM for detailed local design · Quarterly update cycle, not real-time · Metadata reference (creation) date is 2013-03-28; the listed update frequency is quarterly · Extent is a bounding box that includes sea and areas outside the UK

Evidence

Check upstream coverage, uncertainty and licence before use. Station observations are not forecasts or design levels.