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NextMap Britain 2m Contours

NextMap Britain 2m Contours - sample image

Purchasable as a user defined area and deliverable in a range of file formats, NextMap Britain 5m DTM from which the 2m contours are derived provides customers with a highly accurate Digital Elevation Model (DEM).

Derived from data captured using airborne RADAR technology NextMap Britain 5m DTM is available for the whole of Great Britain and provides elevation point data every five meters with a vertical accuracy of +/-60cm. Created through the use the use of the bespoke "TerrainFit" algorithm to derive the underlying ‘bald earth’ terrain model - void of any vegetation, building or other such surface features - NextMap Britain 5m DTM is ideal for the production of contours.

Whilst in most cases we recommend a contour interval of 2m due to the vertical accuracy of the source data and the effect of statistical variability, in the South East of England, where the vertical accuracy of the source data is at its highest, a 1m contour interval would be appropriate.

NextMap Britain 5m DEM products are optimised for use in open areas of less than 20% slope.

Product details

Product: NextMap Britain 2m Contours
Author: InterMap Technologies
Scale: 2m contour interval
Datum: OSGB36
Projection: Transverse Mercator
Spheroid: Airy
Licence:view pdf

Sample downloads