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Queensland Government
WetlandInfo   —   Department of the Environment, Tourism, Science and Innovation

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Drainage basins

Nicholson drainage basin

Access wetland mapping in PDF and KML format by selecting the desired 100K map tile below or download the data via the Queensland Government Information Service.

The below map is for visual representation purposes only. For more detailed mapping, please download the boundary KML.

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Catchment stories info

none

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Wetland observations

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Wetland extents info metadata

Based on wetland mapping version 6.0

Display areas in

Nicholson drainage basin wetland area by system 2019
System Area (ha) % wetlands area % total area
Total 247,525 100.0% 6.9%
Artificial and highly modified 868 0.4% 0.0%
Intertidal (saltmarsh, saltflats, mangroves) (natural) 113,958 46.0% 3.2%
Intertidal (saltmarsh, saltflats, mangroves) (slightly modified) 0 0.0% 0.0%
Lacustrine (natural) 0 0.0% 0.0%
Lacustrine (slightly modified) 457 0.2% 0.0%
Palustrine (natural) 30,258 12.2% 0.8%
Palustrine (slightly modified) 204 0.1% 0.0%
Riverine 101,780 41.1% 2.8%
Nicholson drainage basin wetland area by habitat 2019
Habitat Area (ha) % wetlands area % total area
Total 144,181 100.0% 4.0%
Mangroves - Casuarina 0 0.0% 0.0%
Mangroves - other 29,256 20.3% 0.8%
Salt marsh and salt flats 84,513 58.6% 2.4%
Arid and semi-arid saline lake 0 0.0% 0.0%
Arid and semi-arid floodplain lake 0 0.0% 0.0%
Arid and semi-arid other non-floodplain lake 0 0.0% 0.0%
Arid and semi-arid non-floodplain clay plan lake 0 0.0% 0.0%
Arid and semi-arid permanently inundated lake 0 0.0% 0.0%
Coastal and sub-coastal floodplain lake 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain rock lake 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain sand (window) lake 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain sand (perched) lake 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain soil lake 0 0.0% 0.0%
Arid and semi-arid saline swamp 0 0.0% 0.0%
Arid and semi-arid floodplain tree swamp 16,603 11.5% 0.5%
Arid and semi-arid floodplain shrub swamp 475 0.3% 0.0%
Arid and semi-arid floodplain grass, sedge and herb swamp 403 0.3% 0.0%
Arid and semi-arid non-floodplain tree swamp 555 0.4% 0.0%
Arid and semi-arid non-floodplain shrub swamp 16 0.0% 0.0%
Arid and semi-arid non-floodplain grass, sedge and herb swamp 1,903 1.3% 0.1%
Arid and semi-arid other non-floodplain swamp 0 0.0% 0.0%
Arid and semi-arid Great Artesian Basin fed spring swamp 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain tree (Melaleuca and Eucalypt) swamp 3,288 2.3% 0.1%
Coastal and sub-coastal non-floodplain wet heath swamp 0 0.0% 0.0%
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 3,551 2.5% 0.1%
Coastal and sub-coastal other non-floodplain swamp 0 0.0% 0.0%
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 2,443 1.7% 0.1%
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 1,161 0.8% 0.0%
Coastal and sub-coastal floodplain wet heath swamp 0 0.0% 0.0%
Coastal and sub-coastal other floodplain swamp 0 0.0% 0.0%
Coastal and sub-coastal tree (palm) swamp 0 0.0% 0.0%
Unknown - Swamp - Arid and semi-arid 14 0.0% 0.0%
Unknown - Swamp - Coastal and sub-coastal 0 0.0% 0.0%

Disclaimer

Areas do not include marine or estuarine waters but do include estuarine wetland vegetation
(e.g. mangroves and tidal flats).

All statistics are approximate and generated based on data transformed to a customised Albers equal-area projection, thus allowing wetland extent change for different regions of Queensland to be comparable.

Areas may change over time as mapping approaches improve.

Totals may not match the sum of individually displayed figures due to the rounding of displayed figures.

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Wetland extent changes

Nicholson drainage basin wetland extent change by system
System 2019 area
(ha)
2017 area
(ha)
2013 area
(ha)
2009 area
(ha)
2005 area
(ha)
2001 area
(ha)
pre-clear area
(ha)
2019/pre-clear
percentage
Total 247,525 247,525 247,525 247,284 247,181 247,182 246,432 * 100.1%
Artificial and highly modified 868 868 868 622 461 459 0 n/a
Intertidal (saltmarsh, saltflats, mangroves) (natural) 113,958 113,958 113,958 113,958 113,958 113,958 113,963 100.0%
Intertidal (saltmarsh, saltflats, mangroves) (slightly modified) 0 0 0 0 0 0 0 n/a
Lacustrine (natural) 0 0 0 0 0 0 0 n/a
Lacustrine (slightly modified) 457 457 457 462 518 518 0 n/a
Palustrine (natural) 30,258 30,258 30,258 30,258 30,258 30,261 30,389 99.6%
Palustrine (slightly modified) 204 204 204 204 204 204 0 n/a
Riverine 101,780 101,780 101,780 101,780 101,782 101,782 102,080 99.7%

* Total 2019/pre-clear percentage excludes artificial and highly modified

Nicholson drainage basin wetland extent change by habitat
Habitat 2019 area
(ha)
2017 area
(ha)
2013 area
(ha)
2009 area
(ha)
2005 area
(ha)
2001 area
(ha)
Total 144,181 144,181 144,181 144,181 144,181 144,184
Mangroves - Casuarina 0 0 0 0 0 0
Mangroves - other 29,256 29,256 29,256 29,256 29,256 29,256
Salt marsh and salt flats 84,513 84,513 84,513 84,513 84,513 84,513
Arid and semi-arid saline lake 0 0 0 0 0 0
Arid and semi-arid floodplain lake 0 0 0 0 0 0
Arid and semi-arid other non-floodplain lake 0 0 0 0 0 0
Arid and semi-arid non-floodplain clay plan lake 0 0 0 0 0 0
Arid and semi-arid permanently inundated lake 0 0 0 0 0 0
Coastal and sub-coastal floodplain lake 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain rock lake 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain sand (window) lake 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain sand (perched) lake 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain soil lake 0 0 0 0 0 0
Arid and semi-arid saline swamp 0 0 0 0 0 0
Arid and semi-arid floodplain tree swamp 16,603 16,603 16,603 16,603 16,603 16,603
Arid and semi-arid floodplain shrub swamp 475 475 475 475 475 475
Arid and semi-arid floodplain grass, sedge and herb swamp 403 403 403 403 403 403
Arid and semi-arid non-floodplain tree swamp 555 555 555 555 555 555
Arid and semi-arid non-floodplain shrub swamp 16 16 16 16 16 16
Arid and semi-arid non-floodplain grass, sedge and herb swamp 1,903 1,903 1,903 1,903 1,903 1,903
Arid and semi-arid other non-floodplain swamp 0 0 0 0 0 0
Arid and semi-arid Great Artesian Basin fed spring swamp 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain tree (Melaleuca and Eucalypt) swamp 3,288 3,288 3,288 3,288 3,288 3,288
Coastal and sub-coastal non-floodplain wet heath swamp 0 0 0 0 0 0
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 3,551 3,551 3,551 3,551 3,551 3,551
Coastal and sub-coastal other non-floodplain swamp 0 0 0 0 0 0
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 2,443 2,443 2,443 2,443 2,443 2,446
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 1,161 1,161 1,161 1,161 1,161 1,161
Coastal and sub-coastal floodplain wet heath swamp 0 0 0 0 0 0
Coastal and sub-coastal other floodplain swamp 0 0 0 0 0 0
Coastal and sub-coastal tree (palm) swamp 0 0 0 0 0 0
Unknown - Swamp - Arid and semi-arid 14 14 14 14 14 14
Unknown - Swamp - Coastal and sub-coastal 0 0 0 0 0 0

Disclaimer

Areas do not include marine or estuarine waters but do include estuarine wetland vegetation
(e.g. mangroves and tidal flats).

All statistics are approximate and generated based on data transformed to a customised Albers equal-area projection, thus allowing wetland extent change for different regions of Queensland to be comparable.

Areas may change over time as mapping approaches improve.

Totals may not match the sum of individually displayed figures due to the rounding of displayed figures.

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Australian Land Use and Management Classification (ALUMC) metadata

Nicholson drainage basin land use
ALUMC code and description
Area (ha)
% total area
Total 3,564,487 99.7%
2.1 Grazing native vegetation 2,752,612 77.0%
1.1 Nature conservation 282,201 7.9%
6.5 Marsh/wetland 275,906 7.7%
1.2 Managed resource protection 220,332 6.2%
6.1 Lake 11,754 0.3%
6.3 River 9,234 0.3%
1.3 Other minimal use 8,532 0.2%
5.8 Mining 2,122 0.1%
6.2 Reservoir/dam 776 0.0%
5.4 Residential and farm infrastructure 319 0.0%
5.7 Transport and communication 260 0.0%
4.3 Irrigated cropping 227 0.0%
5.3 Manufacturing and industrial 80 0.0%
5.5 Services 75 0.0%
5.9 Waste treatment and disposal 22 0.0%
5.2 Intensive animal production 17 0.0%
3.6 Land in transition 16 0.0%
5.6 Utilities 2 0.0%

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Wildlife

Kingdom
Class
Native Introduced Wetland
indicator
species
Rare or
threatened
species
All
TOTAL 1,705 101 252 36 1,806
Animals 501 12 127 32 513
Mammals 47 9 1 3 56
Birds 288 1 75 22 289
Reptiles 102 1 9 6 103
Amphibians 19 1 7 0 20
Ray-finned fishes 25 0 25 0 25
Cartilaginous fishes 2 0 2 1 2
Insects 18 0 8 0 18
Fungi 4 0 0 0 4
Plants 1,200 89 125 4 1,289

Note: Wildlife statistics are based on information that has been submitted to the DETSI WildNet database and converted to a 10km² grid. The grid information has been intersected with the mapping polygons to determine the species lists. Click here to view the species grid metadata.

Information from WildNet can also be accessed via Wildlife Online and WetlandMaps.

Rare or threatened includes species listed as extinct, extinct in the wild, critically endangered, endangered, vulnerable or conservation dependent under either the Nature Conservation Act or Environment Protection and Biodiversity Conservation Act

Disclaimer: While every care is taken to ensure the accuracy of this product, the Queensland Government and Australian Government make no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and disclaim all responsibility and all liability (including without limitation, liability in negligence) for all expenses, losses, damages (including indirect or consequential damage) and costs which might be incurred as a consequence of reliance on the product, or as a result of the product being inaccurate or incomplete in any way and for any reason.

AreaType-basin

This page should be cited as:

Department of Environment, Science and Innovation, Queensland (2013) Nicholson drainage basin — facts and maps, WetlandInfo website, accessed 15 April 2025. Available at: https://wetlandinfo.des.qld.gov.au/wetlands/facts-maps/basin-nicholson/

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