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

Great Sandy Strait DIWA nationally important wetland

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Click here for the Australian Government's report on this wetland

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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

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Great Sandy Strait DIWA nationally important wetland wetland area by system 2019
System Area (ha) % wetlands area % total area
Total 20,846 100.0% 22.7%
Total excluding riverine and artificial/highly modified riverine 20,845 100.0% 22.7%
Artificial and highly modified 3 0.0% 0.0%
Intertidal (saltmarsh, saltflats, mangroves) (natural) 17,243 82.7% 18.7%
Intertidal (saltmarsh, saltflats, mangroves) (slightly modified) 0 0.0% 0.0%
Lacustrine (natural) 0 0.0% 0.0%
Lacustrine (slightly modified) 11 0.1% 0.0%
Palustrine (natural) 3,573 17.1% 3.9%
Palustrine (slightly modified) 15 0.1% 0.0%
Riverine < 1 0.0% 0.0%
Great Sandy Strait DIWA nationally important wetland wetland area by habitat 2019
Habitat Area (ha) % wetlands area % total area
Total 20,830 100.0% 22.6%
Mangroves - Casuarina 382 1.8% 0.4%
Mangroves - other 12,954 62.2% 14.1%
Salt marsh and salt flats 3,906 18.8% 4.2%
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 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 911 4.4% 1.0%
Coastal and sub-coastal non-floodplain wet heath swamp 1,356 6.5% 1.5%
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 275 1.3% 0.3%
Coastal and sub-coastal other non-floodplain swamp 0 0.0% 0.0%
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 989 4.7% 1.1%
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 18 0.1% 0.0%
Coastal and sub-coastal floodplain wet heath swamp 39 0.2% 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 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

Great Sandy Strait DIWA nationally important wetland 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 20,846 20,847 20,847 20,849 20,850 20,869 21,616 * 96.4%
Artificial and highly modified 3 3 3 3 3 3 0 n/a
Intertidal (saltmarsh, saltflats, mangroves) (natural) 17,243 17,243 17,243 17,243 17,242 17,242 17,342 99.4%
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) 11 11 11 11 11 11 0 n/a
Palustrine (natural) 3,573 3,574 3,574 3,576 3,578 3,597 4,272 83.6%
Palustrine (slightly modified) 15 15 15 15 15 15 0 n/a
Riverine < 1 < 1 < 1 < 1 < 1 < 1 < 1 100.0%

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

Great Sandy Strait DIWA nationally important wetland 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 20,830 20,831 20,831 20,834 20,835 20,853
Mangroves - Casuarina 382 382 382 382 382 382
Mangroves - other 12,954 12,954 12,954 12,954 12,952 12,952
Salt marsh and salt flats 3,906 3,906 3,906 3,906 3,906 3,906
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 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 911 911 911 911 912 914
Coastal and sub-coastal non-floodplain wet heath swamp 1,356 1,356 1,356 1,356 1,356 1,356
Coastal and sub-coastal non-floodplain grass, sedge, and herb swamp 275 275 275 275 275 275
Coastal and sub-coastal other non-floodplain swamp 0 0 0 0 0 0
Coastal and sub-coastal floodplain tree (Melaleuca and Eucalypt) swamp 989 990 990 992 992 992
Coastal and sub-coastal floodplain grass, sedge, and herb swamp 18 18 18 18 18 18
Coastal and sub-coastal floodplain wet heath swamp 39 39 39 39 39 56
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

Great Sandy Strait DIWA nationally important wetland land use
ALUMC code and description
Area (ha)
% total area
Total 32,219 35.0%
6.5 Marsh/wetland 15,115 16.4%
1.1 Nature conservation 8,113 8.8%
6.3 River 4,741 5.2%
1.3 Other minimal use 2,007 2.2%
2.1 Grazing native vegetation 1,388 1.5%
5.4 Residential and farm infrastructure 262 0.3%
2.2 Production native forests 201 0.2%
4.3 Irrigated cropping 155 0.2%
5.5 Services 69 0.1%
6.6 Estuary/coastal waters 45 0.0%
1.2 Managed resource protection 43 0.0%
5.9 Waste treatment and disposal 23 0.0%
6.2 Reservoir/dam 18 0.0%
5.7 Transport and communication 14 0.0%
3.1 Plantation forests 11 0.0%
5.3 Manufacturing and industrial 9 0.0%
3.3 Cropping 5 0.0%

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Wildlife

Kingdom
Class
Native Introduced Wetland
indicator
species
Rare or
threatened
species
All
TOTAL 1,810 178 326 85 1,988
Animals 640 25 178 65 665
Mammals 76 11 8 10 87
Birds 368 7 91 36 375
Reptiles 83 1 13 8 84
Amphibians 30 1 14 5 31
Ray-finned fishes 38 4 41 2 42
Cartilaginous fishes 2 0 2 1 2
Insects 38 1 9 2 39
Malacostracans 5 0 0 1 5
Bacteria 5 0 0 0 5
Chromists 14 0 0 0 14
Fungi 174 0 0 0 174
Plants 977 153 148 20 1,130

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-diwa-wetland

This page should be cited as:

Department of Environment, Science and Innovation, Queensland (2013) Great Sandy Strait DIWA nationally important wetland — facts and maps, WetlandInfo website, accessed 14 March 2025. Available at: https://wetlandinfo.des.qld.gov.au/wetlands/facts-maps/diwa-wetland-great-sandy-strait/

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