bb11b453-c0ae-422c-bad2-8b061b9d5f11 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T13:49:12 creation ISO 19115 2016 National Catchment Boundaries v 1.1.4 bb11b453-c0ae-422c-bad2-8b061b9d5f11 The National Catchment Database is a linked set of spatial layers and associated attribute tables describing key elements of the surface water hydrology of the Australian continent at a map scale of about 1:250,000. It is built upon the representation of surface drainage patterns provided by the GEODATA national 9 second Digital Elevation Model (DEM) Version 3 (ANU Fenner School of Environment and Society and Geoscience Australia, 2008). The stream network and catchment boundaries contained within the database form foundation elements of the Bureau of Meteorology's Australian Hydrological Geospatial Fabric (Geofabric), the spatial framework that underpins the Australian Water Resources Information System (AWRIS) (http://www.bom.gov.au/water/geofabric/index.shtml). This database adds additional environmental attributes not available through the AHGF. The database contains Levels 1 (drainage divisions) and 2 (aggregated river basins group) National Catchment Boundaries (NCB) in raster format including NCB Pfafstetter coding. The Vector format is available from the Bureau's Geobraic website. {"type": "Polygon", "coordinates": [[[96.0, -44.0], [169.0, -44.0], [169.0, -9.0], [96.0, -9.0], [96.0, -44.0]]]} 96.0 169.0 -44.0 -9.0 AU DC2020 DEM topographic GIS HVC_144499 National dataset Published_External Topology digital elevation data environmental hydrology water resources File download documentDigital Download the file (gdb) ZIP Unnamed resource documentDigital HTML