Dataset Number 858 Dataset Title Prescribed Surface Water Areas Custodian Data Authority: Department for Environment and Water Data Provider: Department for Environment and Water

Description Description In response to water usage issues, certain areas within the state may be prescribed in order to control future water extraction processes. The prescription may be either area based or watercourse based (or in some area both eg Barossa). This layer contains the line work of the surface water areas which have been prescribed through legislation. This layer is maintained as the master line work of the prescribed areas within the state. Usage This layer will mainly be used for administration purposes for water licensing.

Data Quality Lineage This coverage was maintained in an ad-hoc fashion by a variety of agencies through the early 1990's. This layer was redefined in 1997 in order to be the master copy in the state. Most of the line work for this layer was originally based upon the Hundreds boundaries (taken from the DCDB) and so retains the some of the characteristics from this layer. It is expected that the new areas around the state will be prescribed in the next few years, and this layer will act as a base on which to build. Completeness Incomplete. Boundary locations are currently being varified for positional accuracy against gazetted proclamations. Positional Accuracy Boundary locations have been checked for positional accuracy against proclamations in the SA Government Gazette. Minor errors have been corrected, but there are numerous examples of where the boundary could not be confidently verified against the current DCDB. Information regarding these errors is available upon request.

Geographic Extent Extent Name River Murray Min Easting or Longitude 138.5 Min Northing or Latitude -36.25 Max Easting or Longitude 141 Max Northing or Latitude -33.75

Dataset Status Initially Acquired 03-JAN-2000 Last Updated 13-MAY-2010 Update Frequency As required Maintenance Method Digitize or extract from other data layers the appropriate boundary changes required. AusGOAL CC BY (Attribution)

Attributes

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