Drainage & SuDS
Surface water and drainage
- Flow paths and catchment delineation
- SuDS basin and swale design
- Pre-application drainage strategies
- Sense-check flood and runoff models
OS Licensed Partner
OS Terrain Height DataOS Terrain 5 Contour Data
Licensed Ordnance Survey Terrain 5 elevation data with 5m contour intervals and 0.5m vertical accuracy, delivered as a separate DWG or DXF layer alongside your OS MasterMap CAD output.
MOBILE READY
5m grid
OS Terrain 5 source0.5m vertical
Typical accuracyCAD ready
DWG & DXF contours5m ContoursDWG & DXFOS Terrain 50.5m Vertical AccuracyEPSG:27700ODN Heights
OS Terrain 5 Contour Data
5m contour layer
DWG & DXF · ODN heights
OS Terrain 5
5m
CONTOURS
0.5m
VERTICAL
Meets UK Planning Requirements
Official Partner • Licensed Ordnance Survey Map
Preview & Download in 60 Seconds
UK Planning Ready
OS Licensed
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CAD 1:1250 · 3 haFree email delivery
By clicking "Buy & download now", you agree to our terms, refund and corrections policy.
Loading map data…
Search an address to begin
CAD 1:1250 · 3 haFree email delivery
By clicking "Buy & download now", you agree to our terms, refund and corrections policy.
OS Terrain 5 height data
5m contour data for site levels, drainage and landscape design.
Licensed Ordnance Survey Terrain 5 elevation data delivered as a separate contour layer in your DWG or DXF file. National coverage at 5-metre grid spacing with 0.5m typical vertical accuracy, ready to drop into AutoCAD, Civil 3D, Revit or Microstation.
5m
Grid resolution
0.5m
Vertical accuracy
DWG/DXF
Contour delivery
Sample previewEPSG:27700 · ODN
5m contour intervals shown with hillshade. Ordered as a separate layer alongside your CAD output.
Where it's used
Built for engineering, planning and landscape teams.
5m contours sit in the sweet spot for site-scale work. Detailed enough for drainage runs, slope analysis and earthworks estimation, but fast to license and load compared to full LIDAR datasets.
Earthworks
Site levels and grading
- Cut and fill volume estimates
- Sloped access and platform design
- Retaining wall and bank profiles
- Setting-out checks against existing levels
Planning & landscape
Landscape and viewshed
- Slope and aspect plans for planning
- Visual impact and viewshed analysis
- Landscape and ecology baselines
- Context for masterplanning and site selection
What you get
A clean contour layer your CAD team can use straight away.
Contours come as their own labelled layer inside the same DWG or DXF file as your OS MasterMap CAD output. No reprojecting, no merging, no manual labelling.
DetailSpecificationNotes
Source datasetOS Terrain 5 (DTM)Blends LIDAR, photogrammetry and surveyed data for national coverage.
Grid resolution5 metresRight level of detail for site, drainage and landscape work without LIDAR overheads.
Vertical accuracy0.5m typical RMSESuitable for most preliminary design, planning and analysis tasks.
Contour interval5m defaultStandard for site planning. Get in touch if you need a tighter interval for your project.
CAD layerSeparate labelled layerComes inside your DWG or DXF, ready to freeze, isolate or restyle.
Heights and CRSODN heights · EPSG:27700Ordnance Datum Newlyn vertical reference, British National Grid horizontal.
01
Find the site
Search by address or postcode, then refine the boundary or drawn area directly on the map workspace.
02
CAD plan with contours
CAD output is pre-selected with the OS Terrain 5 contour add-on already toggled on. Untoggle it any time if you only need the base mapping.
03
Confirm area and pricing
Pricing is based on the area you select, so you see the total cost before checkout. Larger sites scale predictably.
04
Download and reuse
Contour layer arrives inside the same DWG and DXF as your OS MasterMap CAD output. Reorder or redownload from your account at any time.
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