Queensland wetland data version 3 - wetland lines.

Abstract

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.

This dataset provides mapping of the 2009 extent and type of wetlands at 1:100,000 scale across Queensland.

Purpose

To report and monitor wetland extent and type and change in extent and type

Dataset History

Queensland Wetland Data Version 3.0 - Wetland Lines, is derived from topographic mapping at 1:25 000, 1:50 000 or 1:100 000 scales. Feature-coded and non-feature-coded digital hydrographic mapping data is digitally processed to derive a single line stream network. AS 2482-1989 standard feature-code data descriptions (Standards Australia, 2004) are assessed and features are extracted if deemed to be part of the stream network. Features are then assessed for spatial and topological consistency using orthorectified remote imagery (aerial photography, satellite imagery) and other topographic data. Manual adjustments and/or corrections are made in a Geographic Information System where required. AS 2482-1989 standard feature-codes are maintained (Standards Australia, 2004). Non-feature-coded data are assessed for spatial and topological consistency using orthorectified remote imagery (aerial photography, satellite imagery) and other topographic data. Features are extracted if deemed to be part of the stream network and a non-standard feature-code is applied (refer to Value Descriptions below). Manual adjustments and/or corrections are made in a Geographic Information System where required. Refer to existing metadata for Geoscience Australia 1:100 000 scale topographic data: http://www.ga.gov.au/meta/ANZCW0703005457.html Refer to existing metadata for Department of Defence 1:50 000 scale topographic data: http://www.defence.gov.au/digo/Products/products.html Refer to existing metadata for Wet Tropics Management Authority 1:50 000 scale topographic data: http://www.gso.qld.gov.au/asdd/qsiis/ANZQL0171900066.html Refer to existing metadata for Department of Natural Resources and Water 1:25 000 scale topographic data: http://www.derm.qld.gov.au/property/mapping/dtdata/index.html

Data quality scope:

Level: dataset

Completeness (omission):

This dataset is complete.

Consistency (conceptual):

All stream data visually checked at 1:100,000 scale and by topological consistency checks. Anomalies were corrected by digital editing and creation of topological relationships

Positional accuracy (external, absolute):

The positional accuracy of wetland data mapped at a scale of 1:100 000 is /-75 metres. The minimum polygon size depicted is 5 ha or 75 metres wide for linear features, except for areas along the east coast which are mapped at the 1:50 000 scale with a positional accuracy of /-50 metres, with a minimum polygon size of 1 ha or 35 metres wide for linear features. Wetlands smaller than 1 ha are not delineated on the wetland data. NB: Consideration of the effects of mapped scale is necessary when interpreting data at a larger scale, (eg: 1:25,000).For property assessment, digital linework should be used as a guide only.For further details refer to Attachment 3 Scale of Final Wetlands Mapping located on the DSITIA website.

Attribute accuracy (non quantitative):

No formal and/or informal assessments have been undertaken

Dataset Citation

"Queensland Department of Science, Information Technology, Innovation and the Arts" (2012) Queensland wetland data version 3 - wetland lines.. Bioregional Assessment Source Dataset. Viewed 25 October 2017, http://data.bioregionalassessments.gov.au/dataset/53af31e0-c363-421d-a148-3808bf9c45ff.