National Surface Hydrology Polygons for Australia

Surface Hydrology Polygons (National) provides a complete flow path network for the entire Australian continent, connecting watercourse areas, swamps, reservoirs, and canals. The dataset is maintained by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Model continental water flow by connecting polygon features like watercourse areas and swamps with hydrology line features.
• Classify water body types such as reservoirs, canals, and natural swamps for resource inventory.
• Analyze the spatial distribution of man-made versus natural hydrology features across Australia.
• Assess floodplain extents and wetland connectivity using the topological watercourse area data.

Strengths

• Provides a complete, topologically connected flow path network for the entire Australian continent.
• Includes both natural and man-made hydrology features like canals and reservoirs.

Limitations

• Specific row counts, file sizes, and temporal coverage of the source data are not provided.
• The dataset's accuracy and resolution at a national scale may not support hyper-local analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

null

Time Range

null

Freshness

Updated in April 2026.

Geography

Australia