Gully Erosion

Dataset Number1046
Dataset TitleGully Erosion
CustodianData Authority: Department for Environment and Water
Data Provider: Department for Environment and Water

Description

DescriptionGully erosion covers all forms of mass erosion occurring in watercourses. The intent is to identify land where gully erosion has occurred in the past or is currently occurring. No attempt is made to classify severity of erosion. The data provides an estimate of the proportion of land within a Soil Landscape Map Unit which is or has been affected by erosion. Three Gully Erosion analysis data classes (including not applicable) have been supplied, as percentage values of Soil Landscape Map Units to be used for the calculation of spatial data statistics. Note: the sum of all percentage values for each map unit totals 100%. Soil Landscape Map Units are categorised into six (plus not applicable) legend categories (EROS_GULLY) depending on the proportion of map unit affected by gully erosion.
UsageLink to Soil Attribute Descriptions. This dataset has been derived from the Soil Landscape Map Units spatial dataset, to be used for map creation or the calculation of spatial data statistics. Used to supply Government, community groups, industry and the general public with up to date regional, subregional and catchment level land and soil attribute information for southern South Australia. The aim is to produce maps, statistics and reports displaying and describing: Land and soil attributes within southern South Australia; Land surface features affecting land use, land management and productivity; Limitations / suitability of land and soil for a range of agricultural and other uses. Independent professional advice should be sought before using this in commercial decisions. Further information: soil and land attributes. Gully Erosion dataset can be viewed at NatureMaps (>Soils>Soil Erosion Attributes). Spatial data downloads are available from Data SA.

Data Quality

LineageThe dataset is based on an interpretation of 1:40,000 stereo colour aerial photography and limited field inspection of landscapes and soils by soil scientists. Soil Landscape Map Unit boundaries were determined after an integration of field observations and recordings; laboratory analyses; stereoscopic examination of aerial photographs; understanding of regional landscape processes and stratigraphy; existing soil and geological mapping data. To avoid inconsistencies and confusion, any updates to the Soil and Land Attribute mapping are to be managed by DEWNR Soil and Land Program. This data has been released under a Creative Commons licence. Where products are derived from this data, DEWNR are to be acknowledged, and any changes to the original data should be indicated.
CompletenessComplete. The spatial data is subject to amendment as and when more data become available.
Positional AccuracyThe accuracy is to the scale of mapping (50 metres at 1:50,000 and 300 metres at 1:100,000 mapping scale). The spatial data is to be used at the regional, subregional and catchment level, and can be used to provide property overviews; however, cannot be used at the paddock level. South East, Kangaroo Island, Mount Lofty Ranges and the 'bottom' of Yorke Peninsula have been mapped at 1:50,000. Eyre Peninsula, the main part of Yorke Peninsula, Murray Mallee and Northern Agricultural Districts have been mapped at 1:100,000. Map unit boundaries should be treated as transition zones.

Geographic Extent

Extent NameAgricultural Region - South Australia
Min Easting or Longitude132.25
Min Northing or Latitude-38
Max Easting or Longitude141
Max Northing or Latitude-32.25

Dataset Status

Initially Acquired01-JAN-2000
Last Updated01-JUL-2009
Update FrequencyAs required
Maintenance MethodAs required
AusGOALCC BY (Attribution)

Attributes

TableNameField AliasData TypeDescription
Landscape.SALAD_Erosion_GullyLANSLU CharacterSoil Landscape Map Unit.
Landscape.SALAD_Erosion_GullyEROS_GULLY CharacterProportion of land affected by gully erosion (Legend category. See layer file for descriptions).
Landscape.SALAD_Erosion_GullyG1 NumberPercentage of map unit not affected by gully erosion.
Landscape.SALAD_Erosion_GullyG2 NumberPercentage of map unit affected by gully erosion.
Landscape.SALAD_Erosion_GullyGX NumberPercentage of map unit which is not applicable.

Contact Information

OrganisationDepartment for Environment and Water
Science Monitoring and Knowledge
Postal AddressGPO Box 1047

ADELAIDE
5001
EmailDEWNR.CustomerServiceCentre@sa.gov.au