<p>Dataset Title: Soil-landscape mapping Western Australia – Best available soils Custodian: Department of Agriculture and Food Western Australia Jurisdiction: Western Australia</p><p>Contact Contact Role: Point of contact Contact Organisation Name: Department of Agriculture and Food Western Australia Contact Organisation Jurisdiction: Western Australia Contact Name: Geographic Information Services Contact Position: Data manager Mail Address 1: Locked Bag No. 4 Mail Address 2: Suburb or Place or Locality: Bentley Delivery Centre State or Locality 2: WA Country: Australia Postcode: 6983 Telephone: 08 9368 3925 Facsimile: 08 9474 2405 Electronic Mail Address: [email protected]</p><p>Contact Role: Custodian Contact Organisation Name: Department of Agriculture and Food Western Australia Contact Organisation Jurisdiction: Western Australia Contact Name: Ted Griffin Contact Position: Research Officer Mail Address 1: Locked Bag No. 4 Mail Address 2: Suburb or Place or Locality: Bentley Delivery Centre State or Locality 2: WA Country: Australia Postcode: 6983 Telephone: 08 9368 3720 Facsimile: 08 9474 2405 Electronic Mail Address: [email protected]</p><p>Description Abstract: Soil-landscape mapping covering Western Australia at the best available scale (Version 05.01). It is a compilation of various surveys at different scales varying between 1:20,000 and 1:3,000,000.</p><p>Mapping conforms to a nested hierarchy established to deal with the varying levels of information resulting from the variety of scales in mapping.</p><p>For further information refer to Department of Agriculture Resource Management Technical Reports No. 280 and 313.</p><p>Land capability and land quality attribution is included, refer to Department of Agriculture Resource Management Technical Report No. 298 for a description of the methodology employed.</p><p>Search Words: GEOSCIENCES Geomorphology, SOIL Mapping, SOIL Surveys Geographic Extent: Western Australia.</p><p>Data Currency Beginning Date: 01-01-1987 Ending Date: Current</p><p>Dataset Status Progress: Complete Maintenance & Update Frequency: Biannually.</p><p>Access Stored Data Format: DIGITAL Oracle Spatial Available Format Types: DIGITAL Intergraph GeoMedia warehouse, DIGITAL ArcView shapefile, NON DIGITAL Plots and reports, DIGITAL Word, Excel, Access map unit attribute reports Access Constraints: Subject to data licensing agreement.</p><p>Data Quality Lineage: Data was collected through field observations and sampling and interpretation of aerial photography and satellite imagery at a variety of scales. Soil survey was carried out according to the standards set in "Australian Soil and Land Survey - Guidelines for Conducting Surveys", Gunn et al., CSIRO, 1988.</p><p>Data were transferred to aerial photography or satellite images and georeferenced for digitizing using Microstation. A few surveys were scanned, vectorised and georeferenced. Most data capture took place between 1987 and 1999. Surveys were edge-matched to ensure that joins and overlaps between datasets were rationalized. Individual survey datasets were imported into GeoMedia and combined into one dataset. During 2011/2012, topological errors were identified and corrected using GeoMedia Professional and checked using ArcGIS 10. The data was then written to the DAFWA Oracle Spatial database.</p><p>Attribute data is stored in a separate Oracle map unit database, but key attribute data is provided with the spatial data.</p><p>Positional Accuracy: Variable depending upon scale of survey + or – 25 to 500 m.</p><p>Attribute Accuracy: Accuracy of attribution is variable depending upon scale of survey (see reliability map). Note where a numerical value is stated as -99 or a text attribute value as ‘NA’, these attributes are not valid for the scale/type of mapping represented. Mainly used for land capability and land quality values outside the south west agricultural area where these have not been assessed.</p><p>Logical Consistency: Topological errors checked and corrected using ArcGIS 10 and GeoMedia Professional.</p><p>Completeness: Western Australia.</p><p>Metadata Date: 25-02-2016</p><p>Additional Metadata Datum: Geocentric Datum of Australia 1994. Projection: Geographic coordinates</p><p>Spatial Data Attributes ID Unique polygon identifier PROJ_CODE DAFWA Project Code PROJ_NAME Soil-landscape mapping project name MU_SYMBOL Full soil-landscape map unit symbol MU_ID Unique map unit identifier MU_NAME Map unit name MU_SUM_DESC Summary map unit description MU_SYSTEM Soil-landscape system MU_ZONE Soil-landscape zone MU_RGE Land system (RGE*) code MU_DISP Label used for map display MU_LAND_TYPE Rangelands land type MU_PAST_KIM Pastoral potential code (Kimberley mapping) MU_PAST_PRP Pastoral potential code (Pilbara mapping) MU_PAST_SRP Pastoral potential code (Southern rangelands) MU_COL_NO DAFWA soilgroup colour table number MU_COL_R Colour red value (0-255) MU_COL_G Colour green value (0-255) MU_COL_B Colour blue value (0-255) MU_AREA Map unit area in hectares MU_PERIM Map unit perimeter in kilometres CREATED_BY Oracle database account CREATION_DATE Creation date LAST_UPDATED_BY Oracle database account used for update LAST_UPDA1TE_DATE Date of last update LQ_EXCAVA_VL_L_PC Percent of map unit Very Low to Low Ease of Excavation LQ_FLOODR_M_H_PC Percent of map unit Moderate to High Flood Hazard LQ_INSTAB_M_H_PC Percent of map unit Moderate to High Land Instability Hazard LQ_MI_PURE_VL_L_PC Percent of map unit Very Low to Low Microbial Purification LQ_PH0_10_GE7_PC Percent of map unit 0-10cm layer pH >=7 LQ_PH0_101_LE4_5_PC Percent of map unit 0-10cm layer pH <=4.5 LQ_PH5080_GE7_PC Percent of map unit 50-80cm layer pH >=7 LQ_PH50801_LE4_5_PC Percent of map unit 50-80cm layer pH <=4.5 LQ_PHOS_L_H_E_PC Percent of map unit High to Extreme Phosphorus Export Hazard LQ_SALIN_M_E_PCPercent of map unit Moderate to Extreme Surface Salinity LQ_SA_RIS_M_PS_PC Percent of map unit Moderate to High Hazard or Presently Saline LQ_SI_DRA_VP_P_PC Percent of map unit Very Poor to Poor Site Drainage Potential LQ_SU_ACI_H_P_PC Percent of map unit High Subsurface Acidification Susceptibility or Presently Acid LQ_SU_COM_H_PCPercent of map unit High Subsurface Compaction Susceptibility LQ_URD_VS_S_PC Percent of map unit Very Shallow to Shallow Unrestricted Crop Rooting Depth LQ_WA_ERO_VH_E_PC Percent of map unit Very High to Extreme Water Erosion Hazard LQ_WA_LOG_M_VH_PC Percent of map unit Moderate to Very High Waterlogging Susceptibility LQ_WA_REP_H_PCPercent of map unit High Water Repellence Susceptibility LQ_WA_STO_EL_L_PC Percent of map unit Extremely Low to Low Soil Water Storage LQ_WI_ERO_H_E_PC Percent of map unit High to Extreme Wind Erosion Hazard LC_ANN_HORT Land Capability Code Annual Horticulture LC_ANN_HO1RT_12 Percent Class 1 or 2 Annual Horticulture LC_ANN_HO2RT_123 Percent Class 1, 2 or 3 Annual Horticulture LC_ANN_HO3RT_DESC Land Capability Decode Annual Horticulture LC_DRY_CROP Land Capability Code Dryland Cropping (Minimum Tillage) LC_DRY_CR1OP_12 Percent Class 1 or 2 Dryland Cropping (Minimum Tillage) LC_DRY_CR2OP_123 Percent Class 1, 2 or 3 Dryland Cropping (Minimum Tillage) LC_DRY_CR3OP_DESC Land Capability Decode Dryland Cropping (Minimum Tillage) LC_GRAZ Land Capability Code Grazing LC_GRAZ_12 Percent Class 1 or 2 Grazing LC_GRAZ_1123 Percent Class 1, 2 or 3 Grazing LC_GRAZ_DESC Land Capability Decode Grazing LC_PER_HORT Land Capability Code Perennial Horticulture LC_PER_HO1RT_12 Percent Class 1 or 2 Perennial Horticulture LC_PER_HO2RT_123 Percent Class 1, 2 or 3 Perennial Horticulture LC_PER_HO3RT_DESC Land Capability Decode Perennial Horticulture LC_VINES Land Capability Code Vines LC_VINES_12 Percent Class 1 or 2 Vines LC_VINES_2123 Percent Class 1, 2 or 3 Vines LC_VINES_DESC Land Capability Decode Vines REPORT_URL URL for soil report CODES_LIST URL for codes report LQ_BOOKLET URL to technical report REPORT_EXT URL for soil report</p><p>**Note: Characters shown in red are truncated from shapefile field names Land Capability Thematic Maps To generate a thematic map of Land Capability for a specified land use (eg. Dryland Cropping – Minimum Tillage), from available attributes select LC_DRY_CROP (unique entries). This attribute has six possible values and should be coloured using the RGB values shown below:</p><p>Code Legend Ust C M Y K R G B HTML n A1 >70% Class 1 or 2 124 100 0 80 0 0 255 51 00A076 A2 50-70% Class 1 or 128 40 0 40 0 153 255 153 A5D4B0 2 B1 >70% Class 1, 2 102 0 0 60 0 255 255 102 FFF99D or 3 B2 50-70% Class 1,2, 103 0 20 60 0 255 204 102 FAD579 3 C1 50-70% Class 4 or 18 0 40 0 0 255 153 255 F7B4CA 5 C2 >70% Class 4 or 5 35 20 60 0 0 204 102 255 CE7EAC</p><p>Land Quality Thematic Maps To generate a thematic map of a specified Land Quality (eg. Wind Erosion risk), from the available attributes select LQ_WI_ERO_H_E_PC. This attribute is a proportion of the map unit and should be displayed with the following class breaks (range entries) and RGB values:</p><p>Class Ust C M Y K R G B HTML n <3% 16 0 0 0 0 255 255 255 FFFFFF 3-10% 22 0 0 20 0 255 255 204 FFFCDA 10-30% 102 0 0 60 0 255 255 102 FFF99D 30-50% 103 0 20 60 0 255 204 102 FAD579 50-70% 18 0 40 0 0 255 153 255 F7B4CA >70% 35 20 60 0 0 204 102 255 CE7EAC</p><p>Note: Legend categories for land quality maps are: Subsurface compaction – High hazard (LQ_SU_COM_H_PC) Flood risk – Moderate or high hazard (LQ_FLOODR_M_H_PC) Phosphorus export – High to extreme hazard (LQ_PHOS_L_H_E_PC) Surface salinity – Moderate to extreme (LQ_SALIN_M_E_PC) Salinity risk – Moderate or high hazard or presently saline (LQ_SA_RIS_M_PS_PC) Subsurface acidification – High hazard or presently acid (LQ_SU_ACI_H_P_PC) Water erosion – High to extreme hazard (LQ_WA_ERO_H_E_PC) Waterlogging risk – Moderate to very high hazard (LQ_WA_LOG_M_VH_PC) Wind erosion – High to extreme hazard (LQ_WI_ERO_H_E_PC)</p>