NSW Foundation Spatial Data Framework - Elevation and Depth - Digital Elevation Model

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.\r\n\r\nDEM derived from LiDAR: 1m or 2m resolution. Data is not hydrologically enforced (breaklines) or hydrologically conditioned (identification and analysis of sinks).\r\n\r\nDEM 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\r\nenforced (breaklines) or hydrologically conditioned identification and analysis of sinks).