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.

A gridded (20,000 ha grid squares) data showing density of Oil Mallee Belt Plantations in WA. A dataset was created representing oil mallee plantations in the state. The data is an extract from the DPIRD land use areas of interest database. The land use database contains block and belt planted mallee trees. Only belt planting areas of interest have been extracted in this dataset. Belt planting regions were determined by digitising areas identified from orthophotography. In a small region of the state field verification work was carried out to help validate the mallee data. Field data was used to extrapolate interpretation of mallee areas beyond the field work area and to better identify belt regions of oil mallee. The belt plantings were gridded using 14.1km by 14.1km or 200km2 sized grids representing 20,000ha. The grids were attributed with “Total_Area” - the total area of mallee in the grid block and “Ground_Truthed” - if there was any ground truthing within the grid area.

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 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.