Land Types define the broad soil grouping and dominant geologic and topographic setting of Soil Landscape Map Units. There are 29 Land Types within 14 geomorphic groups which have been described across southern South Australia. Each Soil Landscape Unit has an assigned Land Type, indicating the dominant nature of the map unit.

Biophysical Regions represent the largest grouping of Soil Landscape Map Units within the SA soil and land mapping hierarchy. These cover broad geographical areas, recognisable at the state-scale (i.e. Eyre peninsula, Yorke Peninsula, Northern, Central, Murray Mallee, Kangaroo Island, South East). Biophysical Regions are differentiated by the general nature of soils, landscapes, geology, native vegetation, climate and land use.

The South Australian Land Cover Layers 1987- 2015 spatial land cover datasets for 6 time periods (1987-1990, 1990-1995, 1995-2000, 2000-2005, 2005-2010 and 2010-2015). This dataset can be used to inform spatial and temporal (5 year) summaries of the described land cover types for SA. The capture method and general nature of the classes are most useful for landscape and regional scale assessment.

Tasmania was separated into seven regions for the purposes of land system mapping for the period 1978-1989. Non-unique land systems were developed based on six descriptor classes (geological period, geological rock type, rainfall, vegetation, elevation, and differences in dominant soils. Within each land system, land components are described which present examples of soil and vegetation variation across topographic sequences (proportion estimates, but unmapped boundaries). Land Systems are considered to have a nominal scale of 1:100 000. Regions were mapped separately (as below), and amalgamated to form a digital statewide coverage: Land Systems of Tasmania Region 1: King Island. Land Systems of Tasmania Region 2: Flinders Island. Land Systems of Tasmania Region 3: North. Land Systems of Tasmania Region 4: North East Land Systems Survey of Tasmania Region 5: Central Plateau. Land Systems Surveys of Tasmania Region 6: South, East and Midlands Land Systems of Tasmania Region 7: South West.

Fifteen soil groups have been identified across southern South Australia, which are groupings of 61 soils (soil types). Mapping shows the most common soil group, while more detailed proportion data are supplied for calculating respective areas of each soil group (spatial data statistics).

Sixty one soils (soil types) represent the range of soils found across South Australia’s agricultural lands. Mapping shows the most common soil within each map unit, while more detailed proportion data are supplied for calculating respective areas of each soil type (spatial data statistics).

Biophysical Subregions correspond to the second largest grouping of Soil Landscape Map Units within the SA soil and land mapping hierarchy. Biophysical Subregions are delineated by the nature of soils, landscapes, geology, native vegetation, climate and land use, within a limited sub-regional area.

The land systems of Victoria, as described and delineated by Rowan in 1989, provide a statewide coverage of land type that are applicable to a wide range of land resource management and planning programs. This dataset consolidates a broad range of land resource information drawn from an uneven base to provide a consistent, if limited, coverage of the lands of Victoria. The explicit links with the original sources of data have been retained. The data set was developed from a range of studies of varying methologies and intensities over some forty years. The reliability of the information varies across regions accordingly.

A representation of South Australia’s surface water linear drainage network. Includes significant artificial drainage structures such as urban stormwater channels and the South East drainage scheme. This dataset has been created by merging a wide range of state and federal spatial datasets in order to extract the most accurate spatial and textual data for each region of the state. The dataset utilises a consistent national data schema (AHGF) but the geometry varies in accuracy, capture scale and completeness. Ideally viewed in conjunction with the Waterbodies dataset.

This data set shows designated and actual irrigation areas in Australia compiled by the National Land Use Mapping Project of the National Land and Water Resources Audit to assist in the identification of irrigation areas in Australia. Additional data custodians include Agriculture WA, Queensland Department of Natural Resources and Mines, Murray-Darling Basin Commission, New South Wales Department of Land and Water Conservation and Tasmanian Department of Primary Industries, Water and Environment Designated irrigation areas indicate areas with administratively defined boundaries which have associated rights and obligations pertaining to use of water for irrigation. The precise meaning of the term designated irrigation area varies from region to region. aActual irrigation areasa indicate areas with observationally defined boundaries within which irrigation is practised. The boundaries have been supplied by various agencies and cover the more important irrigation areas in Australia. Users of this data set should be aware that there are irrigated areas outside the designated and actual areas shown and that there are non-irrigated areas inside them. This is particularly true of Tasmania and the Murray-Darling Basin.The data set is available in both vector and raster formats. The raster data set can be used as a companion to the 1996/97 Land Use of Australia data set which is also in raster format. Both data sets have the same coordinate system, boundary coordinates and cell size so that they can easily be overlaid. Users may find, however, that some cells are classified as irrigated by the Australian Irrigation Areas data set and as non-agricultural land by the 1996/97 Land Use of Australia data set.The Version 1a data set may be of use to researchers and policy makers in need of national, regional or local scale irrigation data, though the scale of the source material is highly variable and completness of coverage is poor in some regions. See [further metadata](http://data.daff.gov.au/anrdl/metadata_files/pa_aia__r9ab __00211a02.xml) for more detail. Lineage: The data set was constructed in vector format by appending irrigation area boundary data sets supplied by various agencies. The component data sets are listed below. One of the component data sets which was supplied as separate tiles in ArcView shapefile format was assembled into a single shapefile data set in ArcView 3.1. All other processing was carried out in ARC/INFO 7.2.1 under SunOS using double precision coordinates. For all operations in which processing used a fuzzy tolerance, the value specified was 0.00001 degrees (about 1 m). The raster form of the data set was made from the vector form. 1) Ord River Scheme, Stage 1, irrigation area boundaries. This data set was supplied by Agriculture WA in ArcView shapefile format.2) Boundary of Gazetted Irrigation Areas in Queensland. This data set was supplied by the Queensland Department of Natural Resources and Mines in ARC/INFO export file format. It shows designated irrigation areas. The coordinate datum is not known with certainty and was assumed to be the Australian Geodetic Datum 1984.3) Northern Murray-Darling Basin irrigation area boundaries. This data set was supplied by the Murray-Darling Basin Commission in ARC/INFO export file format. It shows actual irrigation areas, based on interpretation of coarse scale imagery derived from Landsat TM images. The data set comprises 11 polygons. Of these, five have not been retained in the national data set because they largely coincide with the much higher resolution polygons of the Northern New South Wales Cotton Development data set. A sixth has not been retained because it proves to be almost entirely covered by a national park and a perennial lake. One of the polygons that was retained was edited to give precedence to a higher resolution polygon in the Boundary of Gazetted Irrigation Areas in Queensland data set which it partly overlies.4) Northern New South Wales Cotton