NSW wetlands

Dataset Description Contents

General Properties	Data Theme
Resource Dataset Details	Reference System Information
Key Dates	Spatial Domain
Data Quality	Temporal Extent of the Data
Data Status and Maintenance	Distribution Information
Spatial Resolution	Metadata Contact Information
Browse Graphic	Metadata Reference Information

Note: this dataset decsription is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata.

General Properties

Title:   NSW wetlands

Alternative title:

Metadata file identifier:   {047C7B65-9A12-4AE5-9BB1-2EFED60D34E3}

ANZLIC file identifier:

Parent identifier:

Scope of resource described by metadata:   dataset

Resource Dataset Details

Abstract:   The purpose of this project was to map the wetlands across New South Wales. Wetlands were identified using a combination of classification of spectral classes of Landsat MSS and TM imagery and ancillary wetland information to create information classes of broad wetland groups (floodplain wetlands, freshwater lakes, saline lakes, reservoirs, estuarine wetlands and coastal lagoons and lakes). The data will then be used to assess the wetland resource in each catchment.

Purpose:

Jurisdiction:   NSW,    Australia

Custodian organisation:   NSW Department of Environment,Climate Change and Water (DECCW)

Key Dates

1987creation 2010-07-23publication 2011-08-04revision

Metadata statement update date: 20100629

Data Quality

Lineage:   The wetlands of the inland catchments were identified using unsupervised classification of Landsat MSS imagery on the basis of the presence of water. The wetlands of the coastal catchments were mapped with Landsat TM imagery. Wetlands were identified using a band 5 slice In both instances the thematic grid was vectorised using Arc/Info. Wetland areas were grouped a posteriori using ancillary attribute data such as aerial survey of wetland data, 1:250000 hard copy maps sheets, AUSLIG 250K waterbody theme, existing wetland maps. Each Landsat image scene was geometrically rectified and geocoded to UTM coordinates using topographic maps- 1:250000 scale for the inland catchments and 1:25,000 for the coastal catchments. A Root Mean Square Error of less than one was achieved for each image.Arc/Info was used to do topological consistency checks to detect flaws in the spatial data structure and to identify them as errors. This check ensures that all classified polygons are closed, nodes are formed at the intersection of lines, and that there is only one unique label within each. Multiple and dangling lines were also edited. All polygons were visually checked by draping over Landsat imagery using ERDAS Imagine to ensure that polygons were correctly coded.Both the unsupervised classification and band 5 slice is reliant on imagery being acquired at a wet period (some areas may have been missed because of dry imagery and/or cloud cover). Accuracy assessment was performed on both coastal and inland mapping.

Scope:   dataset

Completeness:

Logical consistency:

Positional accuracy:

Attribute accuracy:

Data Status and Maintenance

Status:   completed
Data type:
Resource update frequency:   unknown
Resource update date:   20100110

Spatial Resolution

Scale: 1:0
or
Ground sample distance (raster derived):

Browse Graphic

URL:
Caption:
Type:

Data Theme

Theme topics:
New South Wales - Environment and Conservation -

ANZLIC Keywords:

Reference System Information

Reference system: GDA94 / Geographic

Spatial Domain

West Bounding Longitude:   140
South Bounding Longitude:   -38
East Bounding Longitude:   154
North Bounding Longitude:   -28

Temporal Extent of the Data

Beginning date:
Ending date:
Instant date: 1987

Distribution Information

Stored format name:   Layer
Stored format version:

Distribution format name:   Layer
Distribution format version:
Download URL:     http://mapdata.environment.nsw.gov.au/DDWA
Data size:   1,

Distribution contacts:
Position name:   Data Broker
Organisation:   NSW Department of Environment,Climate Change and Water (DECCW)
Address:PO Box 3720, Parramatta, NSW, 2124
Voice:   02 6740 2349                    Fax:   02 6742 3129
Email:   data.broker@environment.nsw.gov.au