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- Yarragadee_Aquifer abstract "The Yarragadee Aquifer is a significant freshwater aquifer located in the south west of Western Australia and predominantly beneath the Swan Coastal Plain west of the Darling Scarp. It has a north-south range from about Geraldton to the south coast, but with a split in the formation south of Perth. The southern part is known as the South West Yarragadee Aquifer.The aquifer is quite deep, situated hundreds of metres below ground level and with a thickness ranging up to about two kilometres. In the Perth area, the Yarragadee Aquifer is located beneath the Leederville Aquifer, which itself is located beneath two superficial aquifers known as the Gnangara Mound and Jandakot Mound. These aquifers are separated by impervious layers with no groundwater called aquitards.The Yarragadee Aquifer stores about 1000 cubic kilometres of water, compared to about 20 cubic kilometres in the Gnangara Mound. As such it is seen as a potential source of water, and the Water Corporation of Western Australia currently extracts about 45 gigalitres per year from the aquifer. One cubic kilometre is equivalent to 1000 GL.Ultimately the Yaragadee Aquifer is replenished by rainfall. This recharging is usually where there are outcroppings near other aquifers like the Leederville Aquifer. There are also outcrops near the surface in the vicinity of the Blackwood River. Current models estimate this recharge at about 280 to 340 GL per year. This groundwater can remain in the aquifer for many years; in some areas the age of the groundwater is over 30,000 years.Geologically, the aquifer is part of what is known as the Yarragadee Formation, which is a relatively thick geological unit in the Perth Basin. Formed during the Jurassic Period, the Yarragadee Formation is composed primarily of non-marine fluviatile feldspathic, poorly sorted sandstones which are porous and poorly cemented, hence allowing for considerable groundwater reserves. It grades from a shale-siltstone dominated base to a cleaner sandstone in the upper portions of the formation, probably representing increased subsidence or filling of the basin during the late Jurassic.".
- Yarragadee_Aquifer wikiPageExternalLink FACTSHEET3.PDF.
- Yarragadee_Aquifer wikiPageExternalLink Stage+One+Report+-+Section+4.pdf.
- Yarragadee_Aquifer wikiPageExternalLink Stage%20One%20Report%20-%20Section%204.pdf.
- Yarragadee_Aquifer wikiPageExternalLink perth_water.htm.
- Yarragadee_Aquifer wikiPageExternalLink 56259.pdf.
- Yarragadee_Aquifer wikiPageExternalLink sw_yarragadee.cfm?uid=4415-5769-1319-1270.
- Yarragadee_Aquifer wikiPageExternalLink SW_Yarragadee_SWAMS.pdf.
- Yarragadee_Aquifer wikiPageExternalLink www.yarragadee.org.
- Yarragadee_Aquifer wikiPageID "10593411".
- Yarragadee_Aquifer wikiPageRevisionID "583442137".
- Yarragadee_Aquifer bot "H3llBot".
- Yarragadee_Aquifer date "October 2010".
- Yarragadee_Aquifer hasPhotoCollection Yarragadee_Aquifer.
- Yarragadee_Aquifer subject Category:Aquifers_in_Australia.
- Yarragadee_Aquifer subject Category:Swan_Coastal_Plain.
- Yarragadee_Aquifer type Aquifer109201998.
- Yarragadee_Aquifer type AquifersInAustralia.
- Yarragadee_Aquifer type GeologicalFormation109287968.
- Yarragadee_Aquifer type Object100002684.
- Yarragadee_Aquifer type PhysicalEntity100001930.
- Yarragadee_Aquifer type YagoGeoEntity.
- Yarragadee_Aquifer type YagoPermanentlyLocatedEntity.
- Yarragadee_Aquifer comment "The Yarragadee Aquifer is a significant freshwater aquifer located in the south west of Western Australia and predominantly beneath the Swan Coastal Plain west of the Darling Scarp. It has a north-south range from about Geraldton to the south coast, but with a split in the formation south of Perth. The southern part is known as the South West Yarragadee Aquifer.The aquifer is quite deep, situated hundreds of metres below ground level and with a thickness ranging up to about two kilometres.".
- Yarragadee_Aquifer label "Yarragadee Aquifer".
- Yarragadee_Aquifer sameAs m.02qjqdd.
- Yarragadee_Aquifer sameAs Q8049521.
- Yarragadee_Aquifer sameAs Q8049521.
- Yarragadee_Aquifer sameAs Yarragadee_Aquifer.
- Yarragadee_Aquifer wasDerivedFrom Yarragadee_Aquifer?oldid=583442137.
- Yarragadee_Aquifer isPrimaryTopicOf Yarragadee_Aquifer.