3D and Terrain Data

Lidar Elevation data captured by aircraft is typically the most detailed elevation data available.

The Environment Agency captures Lidar Elevation databy aircraft on an ongoing basis for the purpose of creating up to date flood maps. The data is available with a resolution of up to 25cm depending on your study area (other Lidar resolutions include 2m, 1m and 50cm), and comes as both a DTM (Digital Terrain Model) - 'bare earth' - and a DSM (Digital Surface Model).

LIght Imaging Detection and Ranging (LIDAR) technology provides an extremely high vertical resolution for heights of buildings, vegetation and bare ground in open areas, as the surface detail within DSM has been left within the model. At such high resolutions it is possible to use this product for building heights modelling.

Open Government Licence: PDF

Technical Details

Supplier

Environment Agency

Update Cycle

Varies

Coverage

England and Wales (non-continuous coverage)

Scale

Resolutions from 0.25m to 2m

Formats Available

ASC, XYZ, TXT, DXF

Stated Accuracy

Stated Accuracy

Stated Accuracy

dependent on resolution

Licence Options

Open

Delivery Timescale

within minutes

Related Products

Aerial Photography, OS MasterMap Topography Layer

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OS MasterMap is the most detailed, current and comprehensive map dataset of Great Britain, enabling you to make better decisions and manage your assets more effectively. Working with the other mapping layers in the suite, OS MasterMap Topography Layer gives you the visual context to help interpret addresses, routes and imagery. OS MasterMap is the approved dataset for planning applications and land registration.

Continually updated, OS MasterMap contains 450 million geographic features found in the real world, from detailed building and road outlines to water features, pathways, bus shelters and letter boxes.

OS MasterMap is ideal for:

• Use in CAD or GIS
• Planning
• Site location and evaluation
• Risk management
• Transport and infrastructure
• Asset management
• Environmental analysis

OS Terrain 5 is ideal for:

OS Terrain 5 is particularly valuable for large scale development projects, planning, impact assessment

OS Terrain 5 offers detailed modelling of significant features such as road, rail, quarries and lakes​ allowing you to asses the lie of the land on-screen and reduce the need for site visits. OS Terrain 5 has a root mean square error (RMSE) value of 1.5 metres in urban areas and major communication routes. 

OS Terrain 5 is maintained as part of the same revision process as the Ordnance Survey's large scale datasets and so adds a valuable third dimension to OS MasterMap Topography Layer.

Licence: PDF

Technical Details

Supplier

Ordnance Survey

Update Cycle

6 weekly

Coverage

GB

Scale

1:1250 (OS MasterMap) and 5m (Terrain 5)

Formats Available

DWG, SHP, PDF

Stated Accuracy

Urban +/- 1m (OS MasterMap)

Stated Accuracy

Rural +/- 8m (OS MasterMap)

Stated Accuracy

+/- 8m (OS MasterMap)

Licence Options

12, 24 or 36 months

Delivery Timescale

Within minutes

Related Products

PDF Plans, Aerial Photography, OS MasterMap Highways Layer, OS Mastermap Imagery Layer, Lidar, AddressBase Plus

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It offers detailed modelling of significant features such as road, rail, quarries and lakes​ allowing you to asses the lie of the land on-screen and reduce the need for site visits. OS Terrain 5 has a root mean square error (RMSE) value of 1.5 metres in urban areas and major communication routes. 

OS Terrain 5 is maintained as part of the same revision process as the Ordnance Survey's large scale datasets and so adds a valuable third dimension to OS MasterMap Topography Layer.

Licence: PDF

OS Terrain 5 is ideal for:

OS Terrain 5 is particularly valuable for large scale development projects, planning, impact assessment

Technical Details

Supplier

Ordnance Survey

Update Cycle

6 weekly

Coverage

GB

Scale

5m resolution

Formats Available

ASC, XYZ, TXT, DXF

Stated Accuracy

Stated Accuracy

Stated Accuracy

Licence Options

Annual

Delivery Timescale

Within minutes

Related Products

Aerial Photography, OS MasterMap Topography Layer, OS VectorMap Local

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OS Terrain 50 models landscape features and is designed to be interoperable with small-scale mapping products for analytical, modelling, planning and visual purposes.

OS Terrain 50 is available as a grid of heighted points at 50 metre post spacing and contours with 10m intervals (plus mean high water and mean low water boundaries and spot heights).  It has an accuracy of 4m RMSE.

OS Terrain 50 is aligned to British National Grid (EPSG:27700) with height relative to Ordnance Survey Newlyn Datum.  The product is maintained and synchronised with other OS product updates.  It is supplied as bespoke area cut-outs or 10km x 10km tiles.

Useful for:

• Wind direction and line of sight modelling
• Radio signal propagation
• Environmental analysis, flooding
• Asset/site management
• Geological analysis

Complementary Products

• OS Terrain 5 (5m Digital Terrain Model) for detailed modelling

Technical Details

Supplier

Ordnance Survey

Update Cycle

Annually (July)

Coverage

GB

Scale

1:50 000

Formats Available

ASC, DXF, TXT, XYZ

Stated Accuracy

Stated Accuracy

Stated Accuracy

4m RSME

Licence Options

Open

Delivery Timescale

Within minutes

Related Products

OS 1:25 000 Raster, OS 1:50 000 Raster

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The data is purchasable as a user defined area and gives access to the highest resolution terrain elevation data for areas where no Lidar data is available.

Aerial Photography Derived 2m DSM & 5M DTM can be downloaded in a range of formats.

Technical Details

Supplier

​Getmapping.com

Update Cycle

Ad-hoc

Coverage

Much of Scotland and Wales

Scale

2m & 5m resolution

Formats Available

ASC, XYZ, TXT, DXF

Stated Accuracy

Stated Accuracy

Stated Accuracy

Licence Options

Perpetual

Delivery Timescale

Within minutes

Related Products

Aerial Photography, OS MasterMap Topography Layer, OS VectorMap Local

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This data is derived from data captured using airborne RADAR technology which is then subsequently interpolated using the bespoke "TerrainFit" algorithm to derive the underlying ‘bald earth’ terrain model.

The 5m resolution products incorporate elevation point data every 5m and a vertical accuracy of +/- 60cm  providing customers with a highly accurate Digital Elevation Model (DEM).

emapsite have then created this 2m contour product.

The data is purchasable as a user defined area and is available in a range of file formats

Technical Details

Supplier

InterMap Technologies

Update Cycle

None

Coverage

GB

Scale

2m contour interval

Formats Available

DXF, SHP

Stated Accuracy

Stated Accuracy

Stated Accuracy

Licence Options

Perpetual

Delivery Timescale

Within minutes

Related Products

Aerial Photography, OS MasterMap Topography Layer, OS VectorMap Local

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Intermap NextMap Britain 5m Digital Terrain Model data covers the whole of Great Britain, being interpolated from the Digital Surface Model which was derived from aerial radar surveys carried out during 2003/4. The DTM data is vertically accurate to within +/-1m in areas of minimal vegetation and where the slope is less than 20 degrees.

We recommend NextMap Britain 5m DTM data for projects in lowland parts of Great Britain, in particular open areas, as well as areas for where there is no Lidar coverage available at a finer resolution.

The 10m resolution products are formed by resampling the NextMap Britain 5m DTM. It is important to note however that this will not result in the same level of accuracy when used during visualisations, visual impact assessments, viewshed analyses and similar modelling tasks.

The data is purchasable as a user defined area and is available in a range of file formats

Technical Details

Supplier

InterMap Technologies

Update Cycle

None

Coverage

GB

Scale

5m and 10m resolution

Formats Available

Stated Accuracy

Stated Accuracy

Stated Accuracy

Dependent on resolution

Licence Options

Perpetual

Delivery Timescale

Within minutes

Related Products

Aerial Photography, OS MasterMap Topography Layer, OS VectorMap Local

Download Samples

​Exclusive to emapsite, we can offer a 25m terrain product from de-resolved NextMap Britain 5m data, which conveniently fills the "resolution gap" between OS Profile at 10m and the OS Opendata Panorama product at 50m. The NextMap25 product is available on a per country basis: for the whole of GB, and for England, Scotland and Wales.

Both the Digital Terrain Model (DTM) and Digital Surface Model (DSM) are available.

For more details, please contact us for information and pricing.

Technical Details

Supplier

InterMap Technologies

Update Cycle

None

Coverage

GB

Scale

25m resolution

Formats Available

ASC

Stated Accuracy

Stated Accuracy

Stated Accuracy

Licence Options

Perpetual

Delivery Timescale

On request

Related Products

OS 1:25 000 Raster

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The level of detail on each model can vary according to the application and models can be rendered using existing vertical, oblique or ground photography, giving a real world Cityscape model. Models can be delivered in all major CAD and visualisation software formats, including 3DS.

-Level of Detail 1 - 3D Buildings (simple flat roofed building blocks)

-Level of Detail 2 - 3D Buildings (3D buildings with accurate pitched or flat roof shape)

-Level of Detail 3 – 3D Buildings (3D buildings with accurate pitched or flat roof shape plus roof details such as dormer windows, chimneys and lift shafts)

-Additional Details Layer to include roads, footpaths, trees, water and rail features.

There is full coverage for England and Wales as well as major cities in Scotland. To request a quote please contact us at sales@emapsite.com specifying your area of interest. Most data is created to order, but in areas where data has already been processed turnaround times are greatly reduced.​

Technical Details

Supplier

Bluesky

Update Cycle

Ad-hoc

Coverage

England and Wales, plus major cities in Scotland

Scale

Formats Available

DWG, 3DS and others on request

Stated Accuracy

Stated Accuracy

Stated Accuracy

Licence Options

Annual

Delivery Timescale

On request

Related Products

OS MasterMap Topography Layer

Download Samples

Trees play a vital role in day to day life but can also be a hazard.  They improve air quality, provide valuable habitats for wildlife, and conserve energy by naturally cooling nearby buildings in the urban environment.  However, they also pose a health risk to hay fever and asthma sufferers, and a risk to properties and underground assets (causing subsidence or pipeline fractures through root damage), or falling and endangering overhead lines and buildings. 

Bluesky National Tree Map™ V2 provides those involved in tree and vegetation management an on-screen representation of how trees relate spatially to the built and natural environments around them and the hazards they pose.  It is useful for prioritising site visits and field work

The dataset provides:

1. Canopy Polygons (Vector Polygon) – Representing individual trees or closely-grouped tree crowns.

2. Idealised Crowns (Vector Polygon) – Crown polygons visualised as circles for ease of use. Area measurement remains true to original canopy feature.

3. Points (Vector Point) – Detailing the centre point and height of each canopy feature.

The product is compatible with Ordnance Survey products and can be combined with other products to make 3D visualisations. It is updated regularly as new aerial photography becomes available, ensuring that it remains the most detailed, comprehensive and up-to-date tree map.  Aerial photography is ordered separately.

Technical Details

Supplier

Bluesky

Update Cycle

Regularly

Coverage

England, Wales and Scotland

Scale

Typically 25cm spatial resolution

Formats Available

SHP, GDB, DWG, DXF, KML

Stated Accuracy

Over 99% within 50m of buildings

Stated Accuracy

Over 98% of canopy coverage

Stated Accuracy

Licence Options

Annual

Delivery Timescale

Within 2 working hours

Related Products

OS MasterMap Topography Layer

Download Samples