Dataset Number 970 Dataset Title Topography - Coastline Custodian Data Authority: Department for Environment and Water Data Provider: Department for Environment and Water

Description Description Data layer includes an interpretation of the mean high water mark for the coastal zone of South Australia. This layer is a historic representation of the Mean High Water mark. It has been captured from now historic Ortho rectified imagery using heads up digitising techniques. Usage Standard layer of topographic dataset. This coastline representation should only be used for a generalized mapping where accurate representation is not required.

Data Quality Lineage The coastline was re-interpreted and re-captured in 2005 from ortho-rectified aerial imagery of varying specifications. Reference was also made to advice from DEH Coast and Marine sources and in limited instances, field inspection. Completeness Dataset is complete for South Australia Positional Accuracy In general, 90% of well defined features are within +/- 25metres of their true position. Ill defined features are subject to interpretation error and their accuracy is generally beyond this level. Horizontal accuracy is also recorded at the feature level.

Geographic Extent Extent Name Coastal SA Min Easting or Longitude 129 Min Northing or Latitude -38 Max Easting or Longitude 141 Max Northing or Latitude -31

Dataset Status Initially Acquired 01-JAN-1990 Last Updated CURRENT Update Frequency Quarterly Maintenance Method Heads up digitising from aerial imagery. AusGOAL Restricted

Attributes

Contact Information Organisation Department for Environment and Water Information Postal Address GPO Box 1047 ADELAIDE SA 5001 Email DEWNR.Mapland@sa.gov.au