Australia's River Basins 1997 is the result of a joint State, Territory and Commonwealth Government project to create a
national spatial database of major hydrological basins. It shows the boundaries of Australia's basins as defined by the Australian
Water Resources Management Committee (WRMC).
Australia is divided into drainage divisions which are sub-divided into water regions which are in-turn sub-divided into
river basins. The data includes the name and number of each of the 245 drainage basins, 77 regions, and 12 divisions.
This metadata was prepared for the eAtlas and is not authoritative. Please contact the custodian for an authoritative record.
A copy of this dataset is filed in the eAtlas enduring data repository at: data\other\AU_GA_River-basins-1997
rbasin_polygon.shp (13.2 MB, 1302 polygons, Datum: AGD66):
This shapefile contains the boundaries of all the major river basins of Australia. Where a river basin includes islands,
the islands carry the same attributes, except for the feature code (F_CODE) which is set to "island_cent" instead of "dbasin_cent".
There are 288 dbasin_cent features and 1014 island_cent features.
rbasin_chain.shp (9 MB, 2627 lines, Datum: AGD66):
This shapefile contains the outlines of the river basins.
rbasin_point.shp (320 kB, 1302 points, Datum AGD66):
Centroid of each river basin polygon.
Available for download from GA in the following zipped formats:
ArcView shape file, May be imported into MapInfo, 12.81MB,
MapInfo Interchange Format (MIF), 9.38MB
Data for basin boundaries have been captured by relevant State and Territory authorities from 1:10 000 and 1:250 000 scale
source material. The balance of the data are from Geoscience Australia's GEODATA Coast 100K which includes coastlines
and State and Territory borders.
Australia's River Basin data complies with the following rules for topology:
- The data has a node/chain structure;
- Every line feature has a node at each end;
- Every line feature has a node at intersections;
- Every line feature has a node at the point where an attribute of the feature changes;
- There are no unnecessary pseudo nodes;
- Every polygon is closed;
- Every polygon contains a polygon label point;
- There are no coincident features;
- There are no undershoots, overshoots, broken lines or other artefacts;
- Divisions, Regions or Basins that are intersected by State borders have identical label point attributes each side of
the State border; and
- Lines intersected by State borders, except for coastline, have identical attributes.