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South Nicholson-Georgina groundwater flow line paths
Client Services
Geoscience Australia
GPO Box 378
Canberra
ACT
2601
clientservices@ga.gov.au
AU
+61 2 6249 9111
Client Services
2024-09-30T00:00:00
Flow line paths created for the South Nicholson – Georgina (SNG) region as part of the National Groundwater Systems project in the Exploring for the Future program.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The flow line paths dataset was derived from the regional watertable surface, which was created using groundwater elevations from a subset of bores attributed to the Barkly, Narpa, Cockroach and Toko group aquifers of the Georgina Basin. </SPAN><SPAN>At the basin-scale, these aquifers are assumed to be hydraulically connected due to the absence of regional aquitards or other geological structures. These aquifers, commonly referred to in this report as the ‘regionally unconfined aquifers’, are the most common aquifers for groundwater supplies over most of the SNG region (except for the far southern parts where the Georgina Basin is overlain by younger Mesozoic aquifers of the Great Artesian Basin).</SPAN></P><P><SPAN>From analysis of the mapping, three regional groundwater flow systems were identified:</SPAN></P><P><SPAN>1. Roper River flow system</SPAN></P><P><SPAN>2. Lawn Hill Creek flow system</SPAN></P><P><SPAN>3. Southern Georgina Basin flow system.</SPAN></P><P><SPAN /></P><P /><P><SPAN /></P></DIV></DIV></DIV>
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Client Services
Geoscience Australia
GPO Box 378
Canberra
ACT
2601
clientservices@ga.gov.au
AU
+61 2 6249 9111
Client Services
Client Services
South Nicholson
Georgina
NT
QLD
Northern Territory
Queensland
flow lines
flow direction
groundwater
© Commonwealth of Australia (Geoscience Australia) 2024. This product is released under the Creative Commons Attribution 4.0 International Licence. http://creativecommons.org/licenses/by/4.0/legalcode
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OBJECTID
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OID
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Shape
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Feature geometry.
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Coordinates defining the features.
Flow_System
Flow_System
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The flow system the groundwater flowline paths are identified with:
Flow System 1 - Roper River flow system
Flow System 2 - Southern Georgina Basin flow system
Flow System 3 - Lawn Hill Creek flow system
Geoscience Australia
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20241024
The groundwater flowpaths were derived from the RSWL contours and were annotated 90 degrees (i.e. perpendicular) to the groundwater contours, from high to low RSWL. This works well for most aquifers in the Georgina Basin, which are typically regionally unconfined, however may not suit more confined, localized groundwater compartments.
From analysis of the mapping, three regional groundwater flow systems were identified:
1. Roper River flow system
2. Lawn Hill Creek flow system
3. Southern Georgina Basin flow system.
References:
BoM (Bureau of Meteorology) (2023) National Groundwater Information System (NGIS) v1.7.2, Australian Government, http://www.bom.gov.au/water/groundwater/ngis/index.shtml
DEPWS (Department of Environment, Parks and Water Security) (2023) Northern Territory bore locations, water quality and groundwater levels [data set], https://data.nt.gov.au/dataset/nt-bore-locations-water-quality-and-groundwater-levels
Gallant JC, Dowling TI, Read AM, Wilson N, Tickle P and Inskeep C (2011) SRTM-derived 1 Second Digital Elevation Models Version 1.0 [data set], Geoscience Australia, Canberra, https://pid.geoscience.gov.au/dataset/ga/72759.
QDRDMW (Queensland Department of Regional Development, Manufacturing and Water) (2023) Groundwater database – Queensland, https://www.data.qld.gov.au/dataset/groundwater-database-queensland.
Client Services
Geoscience Australia
GPO Box 378
Canberra
ACT
2601
clientservices@ga.gov.au
AU
+61 2 6249 9111
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