Australian Bathymetric Depth Contours at Multiple Intervals from 2024 Grid

Derived bathymetric isobaths (depth contour lines) generated from the Geoscience Australia AusBathyTopo 250m 2024 gridded dataset. The dataset includes four contour products at intervals of 100m, 5m, 1m, and a multi-resolution composite, clipped to the Australian Exclusive Economic Zone. It is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Marine spatial planning based on depth contour lines covering the Australian EEZ.
• Mapping visualisation based on contours simplified for efficient rendering in Web Mapping Services.
• Broad-scale analysis of continental shelf and deep ocean features based on multi-resolution depth intervals.

Strengths

• Provides four distinct contour products, including a multi-resolution composite with intervals ranging from 1m to 100m.
• Covers a large spatial extent from 92°E to 172°E and 8°S to 60°S at a 250-metre source resolution.
• Includes both simplified contours for web visualisation and full-resolution data for download.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• The contours are not suitable for engineering or high-precision applications due to smoothing procedures.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Geoscience Australia (GA) AusBathyTopo 250m 2024 gridded bathymetric dataset.

Collection Method

Derived isobaths (depth contour lines) generated from a gridded bathymetric model.

Freshness

Last updated 2026-04-28 23:56:12.607295; freshness should be verified.

Geography

Australian Exclusive Economic Zone, covering ocean and land areas from 92°E to 172°E and 8°S to 60°S.