Bureau of Meterology Geofrabric

This is a digital database of surface and groundwater features that registers the spatial location and relationships between important hydrologic features, such as rivers, water storages, catchments and aquifers. The Geofabric is most commonly used to identify drainage networks and contributing catchment areas, and at the finest level of detail includes ~1.4 million streams and 1.5 million catchments.

This National dataset includes 33 spatial layers and 11 relationship tables, and is available as both WMS & WFS.