New South Wales Elevation Data Service with 2m Contours and 5m DEMs

An on-demand service provides four elevation datasets for New South Wales, Australia. Datasets include a 2-metre contour model for the full state and 5-metre digital elevation, slope, and aspect models for Western NSW. The data is produced by DCS Spatial Services using LiDAR and photogrammetric sources.

Use Cases

• Generate topographic maps based on the 2-metre contour dataset.
• Model water flow and drainage patterns based on the 5-metre digital elevation model.
• Analyze terrain slope for land development or agricultural planning based on the 5-metre slope model.
• Calculate solar radiation exposure for renewable energy site selection based on the 5-metre aspect model.

Strengths

• Spatial Services provides horizontal accuracy of +/-1.25 metres and vertical accuracy of +/-0.9 metres at a 95% confidence interval.
• The service offers multiple derived products: contours, digital elevation, slope, and aspect models.
• Data is delivered in standard geospatial formats (Esri Shapefile, ASCII grid).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

DCS Spatial Services, NSW Department of Customer Service.

Collection Method

Data is generated from a combination of 1m and 2m resolution LiDAR DEMs and 5m resolution photogrammetric DEMs using a Triangular Irregular Network (TIN) method.

Freshness

Data currency is listed as 23/10/2023.

Geography

New South Wales, Australia (full state for contours, Western NSW for DEM, slope, and aspect models).