How deep is the Yarragadee aquifer?
The aquifer is quite deep, situated hundreds of metres below ground level and with a thickness ranging up to about two kilometres.
What type of aquifer is Yarragadee?
… The experiments were conducted using three consolidated (sandstone) core samples from different depths of the Yarragadee Formation within the Perth Basin of Western Australia. The Yarragadee Formations form a thick expansive aquifer, consisting of interbedded sandstone, siltstone and shale (Salama, 2005) .
How deep is the Leederville aquifer?
60 – 200 metres
Mirrabooka and Leederville Aquifers: 60 – 200 metres.
Where are perths aquifers?
In Perth there are 3 layers of aquifers: Superficial aquifer – the shallowest aquifer which stretches across the coastal plain. Superficial aquifers are located closer to the surface and often express themselves as wetlands or lakes.
Why does Perth need more water now than it did 100 years ago?
Our climate has experienced significant change in the last 100 years, so we’ve had to change too. Today, we still get some drinking water from streamflow into our dams, but because we can no longer rely on the same amount of rainfall we used to receive, we depend on other sources of water to supply Perth.
How much of WA water supply do the inland aquifers provide in times of drought?
Almost half of national groundwater use in distributed water systems is in Western Australia, where groundwater makes up nearly 30% of total supply.
Why does Western Australia use groundwater?
In many parts of Australia, native fauna and flora rely solely on groundwater for their survival. Groundwater also contributes water directly to rivers and lakes as baseflow, often maintaining surface water bodies in times of drought. In the arid zone, groundwater sustains important natural and cultural values.
Where is the Leederville aquifer?
Western Australia
The Leederville 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 is located above the Yarragadee Aquifer, and beneath two superficial aquifers known as the Gnangara Mound and Jandakot Mound.
How do I find a bore on my property in WA?
To check if your sprinklers water from a tap or a garden bore look for:
- An irrigation controller – usually a box mounted near your electrical meter box. Power cables travelling from the box into the ground may indicate a mains-powered bore pump.
- Turn off your scheme water at your water-meter.
Is Perth really running out of water?
Perth, much like Cape Town, was once almost entirely reliant on its dams. But the city’s rainfall has declined almost 20 per cent since the 1970s, and the amount of water flowing into the city’s dams has fallen from an average of 300 billion litres a year to just 25 billion litres.
Is water scarcity a problem in Perth?
The Perth region has been facing more than a decade of dwindling rain, which has impacted drinking water dams and groundwater supplies. This drinking water is then used to recharge the aquifers, which provide about half of Perth’s drinking water supplies.
Why does Perth have a water crisis?
The decline in rainfall has accelerated in the last 20 years, and streamflow into the city’s reservoir has also decreased. The challenges facing Perth are largely related to augmenting natural sources of fresh water.
Where is the Yarragadee Aquifer in Western Australia?
Yarragadee Aquifer. 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.
How long does groundwater last in an aquifer?
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.
What type of rock is the Perth aquifer made of?
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,…
What is the Leederville Aquifer?
The Leederville aquifer has in the past also been referred to as the shallow artesian aquifer. It consists of interbedded sandstone and shale and has a maximum thickness of around 500 metres. It is found at depths of over 200 metres below the surface.