Vectorized version of the Land Monitor Salinity Extent – South West of Western Australia 2010 dataset. Salinity mapped in raster format with 25-m pixels. The Land Monitor salinity mapping process uses satellite imagery, high-resolution topographic data, ground information and ancillary GIS data sets to map areas of severely salt-affected land identified in consecutive satellite (Landsat TM) scenes (Furby et al 2010). To update the 1990 and 1998 estimates, the spatial-temporal methodology was re-applied using the same approach but took advantage of the latest data and improved computational resources (Caccetta et al 2022). Any changes in the extent of salt affected land detected by Land Monitor in the updated salinity mapping are most likely within the severe salinity class and may represent either expansions of this class of salinity or improvements in the condition of severely salt affected land or in the reduction of commission errors (compared to the original mapping). This data has converted the salt effected areas to a vector geodatabase. Additional post processing to remove urban areas has been applied.

Vectorized version of the Land Monitor Salinity Extent – South West of Western Australia 1990 dataset. Salinity mapped in raster format with 25-m pixels. The Land Monitor salinity mapping process uses satellite imagery, high-resolution topographic data, ground information and ancillary GIS data sets to map areas of severely salt-affected land identified in consecutive satellite (Landsat TM) scenes (Furby et al 2010). To update the 1990 and 1998 estimates, the spatial-temporal methodology was re-applied using the same approach but took advantage of the latest data and improved computational resources (Caccetta et al 2022). Any changes in the extent of salt affected land detected by Land Monitor in the updated salinity mapping are most likely within the severe salinity class and may represent either expansions of this class of salinity or improvements in the condition of severely salt affected land or in the reduction of commission errors (compared to the original mapping). This data has converted the salt effected areas to a vector geodatabase. Additional post processing to remove urban areas has been applied.

Vectorized version of the Land Monitor Salinity Extent – South West of Western Australia 2018 dataset. Salinity mapped in raster format with 25-m pixels. The Land Monitor salinity mapping process uses satellite imagery, high-resolution topographic data, ground information and ancillary GIS data sets to map areas of severely salt-affected land identified in consecutive satellite (Landsat TM) scenes (Furby et al 2010). To update the 1990 and 1998 estimates, the spatial-temporal methodology was re-applied using the same approach but took advantage of the latest data and improved computational resources (Caccetta et al 2022). Any changes in the extent of salt affected land detected by Land Monitor in the updated salinity mapping are most likely within the severe salinity class and may represent either expansions of this class of salinity or improvements in the condition of severely salt affected land or in the reduction of commission errors (compared to the original mapping). This data has converted the salt effected areas to a vector geodatabase. Additional post processing to remove urban areas has been applied.

Soil surface salinity is a land quality which may impact upon a variety of agricultural land uses and is based on analysis and interpretation of the best available soil-landscape mapping dataset (DPIRD-027). See DAFWA Resource Management Technical Report 298 for a description of the qualities assessed and the methodology involved.

Interpolated contours lines at 10 metre intervals produced by DPIRD (formerly DAFWA) from the Land Monitor project (1998-2000) DEM based on a 10 metre grid. This data set does not cover the entire south west region - see the coverage map in the metadata for the full area.

Soil-landscape mapping covering Western Australia at the best available scale (Version February 2019) attributed with the proportional allocation of WA Soil Groups to each map unit. It is a compilation of various surveys at different scales varying between 1:20,000 and 1:3,000,000.

Land capability for annual horticulture in the south west of Western Australia based on analysis and interpretation of the best available soil-landscape mapping dataset (DPIRD-027). Land capability refers to the ability of land to support a type of land use without causing damage. See DAFWA Resource Management Technical Report 298 for a description of the qualities assessed and the methodology involved. The assessment for annual horticulture covers the production of irrigated horticultural crops from plants with short-term life cycles (typically completed within the period of a year). Crops include annual fruits (strawberries, melons, etc.), vegetables (e.g. potatoes, lettuce, cabbages, tomatoes, pumpkins, etc.), commercial turf production and cut flowers. The assumptions for the land use as assessed include: • crops are grown for commercial production • crops are shallow-rooted with most roots using only the top 50 cm of soil • crops are irrigated using sprinkler or trickle systems • mechanised cultivation occurs at least annually • fertilisers and herbicides, fungicides and/or pesticides are broadcast at least annually • crop rotation is practised • considers physical requirements only and ignores socio-economic factors. Capability ratings do not take into account factors such as the availability and quality of water supplies for irrigation or climatic risks such as frost or heat stress. Such factors need to be considered as a separate layer of information.

Land capability for cropping in the south west of Western Australia based on analysis and interpretation of the best available soil-landscape mapping dataset (DPIRD-027). This assessment covers the production of rain-fed (non-irrigated) field crops under a cropping system that incorporates minimal tillage practices and stubble retention. This is a general assessment for common dryland crops grown over extensive areas (i.e. hundreds of hectares). It is best suited to the 350-600 mm rainfall zone where most extensive crops are grown (i.e. the wheatbelt), though may be extended to include some slightly higher rainfall areas. Crops included in this general assessment are wheat, barley, oats, narrow-leafed lupins, field peas, canola, chickpea and faba beans. Land capability refers to the ability of land to support a type of land use without causing damage. See DAFWA Resource Management Technical Report 298 for a description of the qualities assessed and the methodology involved. Capability ratings do not take into account factors such as the availability and quality of water supplies for irrigation or climatic risks such as frost or heat stress. Such factors need to be considered as a separate layer of information.

Interpretive and indicative Groundwater salinity mapping statewide. This dataset was formerly known as Groundwater Salinity Statewide (DOW-030)

Interpolated contours lines at 2 metre intervals produced by DPIRD (formerly DAFWA) from the Land Monitor project (1998-2000) DEM based on a 10 metre grid. This data set does not cover the entire south west region - see the coverage map in the metadata for the full area.