Digital Elevation Models (DEM) are derived from Spatial Services’ (SS) point cloud data. The DEM is a bare earth representation of the earth’s surface where all the above ground feature has been removed.
DEM derived from LiDAR: 1m or 2m resolution. Data is not hydrologically enforced (breaklines) or hydrologically conditioned (identification and analysis of sinks).
DEM derived photogrammetry: data is 5m resolution. Areas of no data caused by steep slopes, shadow and vegetation have been interpolated or filled-in with another data source and will not be as accurate as the bare open ground areas. The data is not hydrologically
enforced (breaklines) or hydrologically conditioned identification and analysis of sinks).
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