Australian Surface Water Management Areas (ASWMA) 2000

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

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Dataset citation

ANZLIC unique identifier: ANZCW0703005381

Title: Australian Surface Water Management Areas (ASWMA) 2000

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Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia

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ASWMA 2000 is a digital representation of the boundaries and names of Surface Water Management Areas (SWMA) which have been defined by a number of State and Territory water management agencies for the use in national water resources reporting.

Many SWMA correspond to Geoscience Australia's Australia's River Basin's 1997 boundaries data, however, in some States and Territories, some SWMA's are a sub-set of a major part of the basins.

This data has been produced by the National Land and Water Resources Audit (NLWRA) and is distributed by Geoscience Australia.

ANZLIC search words:

BOUNDARIES Mapping
WATER Hydrology Mapping
WATER Surface Management
WATER Surface Monitoring
WATER Surface Resources

Spatial domain:

locality map

Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia

Geographic extent polygon: 112 -9, 154 -9, 154 -44, 112 -44, 112 -9,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:: North bounding latitude: -9 °; South bounding latitude: -44 °; East bounding longitude: 154 °; West bounding longitude: 112 °

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Data currency

Beginning date: 1999-06-01

Ending date: 2000-11-01

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Dataset status

Progress: Complete

Maintenance and update frequency: As required

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Access

Stored data format:: DIGITAL - e00 ArcInfo export (e00) ArcInfo Workstation Geographic GDA94

Available format type:: DIGITAL - mif MapInfo Interchange Format (MIF) MapInfo Geographic GDA94; DIGITAL - e00 ArcInfo export (e00) ArcInfo Workstation Geographic GDA94; DIGITAL - shp ArcView shape file ArcView Geographic GDA94

Access constraints:

The data are subject to Copyright. Data files may be downloaded from Geoscience Australia's website at www.ga.gov.au/download/. A licence agreement is required.

Free Data Download

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Data quality

Lineage:

Australia's SWMA boundaries were initially defined from Geoscience Australia's Australia's River Basins 1997 data. All States and Territories, except for Tasmania and Western Australia, split some of the basins into smaller areas. The details of these are described in detail in ASWMA 2000's Product User Guide.

Positional accuracy:

The coastline is from the Geoscience Australia's GEODATA COAST 100K data. For planimetric accuracy, the summation of errors from all sources results in data with a standard deviation of 50 metres for well-defined points.

Attribute accuracy:

All instances of a feature and its attribute values that meet the selection criteria and appear on the source materials are captured. The data is generalised so the selection of features is to some extent subjective.

The accuracy of the attribute information is considered 99%, these names and numbers have been checked by the National Land and Water Resources Audit.

Logical Consistency:

Data have been independently tested to ensure compliance with Geoscience Australia's rules for topological integrity. The data were tested using UNIX scripts and Arc/INFO commands.

The Surface Water Management Areas comply with the following rules for topology:

- The data has a node chain structure;

- Every line feature has a node at each end;

- Every line feature has a node at intersections;

- There are no unnecessary pseudo nodes;

- Every polygon is closed;

- Every polygon contains a polygon label point;

- There are no coincident features;

- There are no undershoots, overshoots, broken lines or other artefacts; and

- National Coverage, 100% of all SWMAs are included in this coverage.

Completeness:

100% of all SWMAs are included in this coverage.