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 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.

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.

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.

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.

Regional land supply assessments measure the stocks of land for future residential, industrial and commercial uses. It provides context for the land use planning and infrastructure provision required to meet demand across selected regional centres in Western Australia. Regional land supply assessments are prepared by the Department of Planning, Lands and Heritage (the Department) on behalf of the Western Australian Planning Commission (WAPC) to fulfil the requirements for tracking and monitoring land supply, as outlined in section 14 of the Planning and Development Act 2005. The role of WAPC include monitoring and forecasting land supply throughout Western Australia, developing strategies for the timely supply of affordable residential land, and researching and developing planning methods and models relating to land use planning, land development and associated matters. Regional land supply assessments are one of a suite of products produced as part of the Urban Development Program (UDP). The UDP monitors land supply and promotes the timely delivery of residential, industrial and commercial land in Western Australia. The information presented in regional land supply assessments assist State Government agencies, utility and essential service providers, local governments and the private sector in decision making and forward planning. Regional land supply assessments include key information on: • demand drivers specific to each regional centre, including the major economic factors that influence employment and population growth, and therefore, the demand for land and housing • zoned land supply for residential (including rural living), industrial and commercial uses • development constraints • recent and future land development activity • existing and required physical infrastructure. This spatial dataset shows sites/areas that have been identified for future residential, industrial or commercial development. Sites are included where intent has been demonstrated by Government or the development industry to develop the site at some point in the future. Sites are included based on the current, applicable planning framework at the time of capture/analysis.

Generalised land use regions based on their primary agricultural land use.