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

Southeast Queensland (SEQ) bioregion

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Catchment stories info

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Wetland observations

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Wetland extents info metadata

Based on wetland mapping version 6.0

Display areas in

Southeast Queensland (SEQ) bioregion wetland area by system 2019
System Area (ha) % wetlands area % total area
Total 351,584 100.0% 5.6%
Total excluding riverine and artificial/highly modified riverine 262,274 74.6% 4.2%
Artificial and highly modified 57,417 16.3% 0.9%
Intertidal (saltmarsh, saltflats, mangroves) (natural) 82,759 23.5% 1.3%
Intertidal (saltmarsh, saltflats, mangroves) (slightly modified) 592 0.2% 0.0%
Lacustrine (natural) 3,605 1.0% 0.1%
Lacustrine (slightly modified) 5,680 1.6% 0.1%
Palustrine (natural) 108,908 31.0% 1.7%
Palustrine (slightly modified) 3,676 1.0% 0.1%
Riverine 88,947 25.3% 1.4%
Southeast Queensland (SEQ) bioregion wetland area by habitat 2019
Habitat Area (ha) % wetlands area % total area
Total 199,364 100.0% 3.2%
Mangroves - Casuarina 3,687 1.8% 0.1%
Mangroves - other 52,820 26.5% 0.8%
Salt marsh and salt flats 26,708 13.4% 0.4%
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 2,609 1.3% 0.0%
Coastal and sub-coastal non-floodplain sand (perched) lake 998 0.5% 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 0 0.0% 0.0%
Arid and semi-arid floodplain shrub swamp 0 0.0% 0.0%
Arid and semi-arid floodplain grass, sedge and herb swamp 0 0.0% 0.0%
Arid and semi-arid non-floodplain tree swamp 0 0.0% 0.0%
Arid and semi-arid non-floodplain shrub swamp 0 0.0% 0.0%
Arid and semi-arid non-floodplain grass, sedge and herb swamp 0 0.0% 0.0%
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 26,028 13.1% 0.4%
Coastal and sub-coastal non-floodplain wet heath swamp 11,280 5.7% 0.2%
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 13,457 6.7% 0.2%
Coastal and sub-coastal other non-floodplain swamp 0 0.0% 0.0%
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 45,491 22.8% 0.7%
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 4,797 2.4% 0.1%
Coastal and sub-coastal floodplain wet heath swamp 11,488 5.8% 0.2%
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 0 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

Southeast Queensland (SEQ) bioregion 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 351,584 351,747 351,839 350,424 349,997 347,949 427,002 * 68.9%
Artificial and highly modified 57,417 57,457 57,876 56,266 55,192 51,379 0 n/a
Intertidal (saltmarsh, saltflats, mangroves) (natural) 82,759 82,770 82,896 83,214 83,235 83,305 91,952 90.0%
Intertidal (saltmarsh, saltflats, mangroves) (slightly modified) 592 595 349 292 298 313 0 n/a
Lacustrine (natural) 3,605 3,605 3,605 3,605 3,605 3,605 3,608 99.9%
Lacustrine (slightly modified) 5,680 5,664 5,607 5,373 5,292 5,129 0 n/a
Palustrine (natural) 108,908 109,076 109,310 109,460 109,912 110,312 188,481 57.8%
Palustrine (slightly modified) 3,676 3,593 3,112 2,944 2,969 2,964 0 n/a
Riverine 88,947 88,986 89,085 89,269 89,495 90,942 142,961 62.2%

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

Southeast Queensland (SEQ) bioregion 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 199,364 199,463 199,088 199,338 199,841 200,320
Mangroves - Casuarina 3,687 3,690 3,514 3,490 3,491 3,494
Mangroves - other 52,820 52,826 52,880 52,898 52,907 52,916
Salt marsh and salt flats 26,708 26,713 26,709 26,982 26,998 27,071
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 2,609 2,609 2,609 2,609 2,609 2,609
Coastal and sub-coastal non-floodplain sand (perched) lake 998 998 998 998 998 998
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 0 0 0 0 0 0
Arid and semi-arid floodplain shrub swamp 0 0 0 0 0 0
Arid and semi-arid floodplain grass, sedge and herb swamp 0 0 0 0 0 0
Arid and semi-arid non-floodplain tree swamp 0 0 0 0 0 0
Arid and semi-arid non-floodplain shrub swamp 0 0 0 0 0 0
Arid and semi-arid non-floodplain grass, sedge and herb swamp 0 0 0 0 0 0
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 26,028 26,076 25,844 25,862 25,989 26,179
Coastal and sub-coastal non-floodplain wet heath swamp 11,280 11,315 11,318 11,332 11,371 11,128
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 13,457 13,458 13,463 13,464 13,480 13,485
Coastal and sub-coastal other non-floodplain swamp 0 0 0 0 0 0
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 45,491 45,473 45,405 45,313 45,507 45,844
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 4,797 4,802 4,825 4,849 4,883 4,893
Coastal and sub-coastal floodplain wet heath swamp 11,488 11,503 11,524 11,540 11,607 11,703
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 0 0 0 0 0 0
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

Southeast Queensland (SEQ) bioregion land use
ALUMC code and description
Area (ha)
% total area
Total 6,215,176 99.5%
2.1 Grazing native vegetation 3,315,397 53.1%
1.1 Nature conservation 883,668 14.1%
5.4 Residential and farm infrastructure 419,553 6.7%
2.2 Production native forests 369,682 5.9%
1.3 Other minimal use 333,937 5.3%
3.1 Plantation forests 209,272 3.3%
4.3 Irrigated cropping 114,367 1.8%
6.5 Marsh/wetland 85,634 1.4%
3.3 Cropping 68,537 1.1%
5.5 Services 65,813 1.1%
6.2 Reservoir/dam 58,223 0.9%
1.2 Managed resource protection 52,080 0.8%
4.5 Irrigated seasonal horticulture 43,571 0.7%
6.3 River 37,793 0.6%
4.4 Irrigated perennial horticulture 27,356 0.4%
5.7 Transport and communication 21,612 0.3%
4.2 Grazing irrigated modified pastures 17,079 0.3%
5.3 Manufacturing and industrial 15,668 0.3%
3.6 Land in transition 13,556 0.2%
5.8 Mining 11,946 0.2%
3.2 Grazing modified pastures 11,201 0.2%
3.4 Perennial horticulture 9,563 0.2%
6.6 Estuary/coastal waters 7,454 0.1%
5.2 Intensive animal production 7,101 0.1%
6.1 Lake 5,054 0.1%
5.9 Waste treatment and disposal 2,841 0.0%
5.6 Utilities 2,518 0.0%
5.1 Intensive horticulture 1,752 0.0%
4.6 Irrigated land in transition 1,158 0.0%
6.4 Channel/aqueduct 874 0.0%
4.1 Irrigated plantation forests 834 0.0%
3.5 Seasonal horticulture 77 0.0%

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Wildlife

Kingdom
Class
Native Introduced Wetland
indicator
species
Rare or
threatened
species
All
TOTAL 9,399 1,252 812 458 10,651
Animals 1,522 58 398 155 1,580
Mammals 155 21 10 26 176
Birds 612 14 103 64 626
Reptiles 216 3 25 25 219
Amphibians 64 1 27 16 65
Lobe-finned fishes 1 0 1 1 1
Ray-finned fishes 94 14 106 6 108
Cartilaginous fishes 31 0 31 4 31
Lampreys 2 0 2 1 2
Insects 323 5 93 4 328
Malacostracans 21 0 0 8 21
Arachnids 1 0 0 0 1
Snails 2 0 0 0 2
Bacteria 112 0 0 0 112
Chromists 146 0 0 0 146
Fungi 1,986 3 0 0 1,989
Plants 5,626 1,191 414 303 6,817
Protozoans 7 0 0 0 7

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-bioregion

This page should be cited as:

Department of Environment, Science and Innovation, Queensland (2013) Southeast Queensland (SEQ) bioregion — facts and maps, WetlandInfo website, accessed 14 April 2025. Available at: https://wetlandinfo.des.qld.gov.au/wetlands/facts-maps/bioregion-southeast-queensland-seq/

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