Lake Gnangara
Encyclopedia
Lake Gnangara is the most southerly of the Wanneroo wetlands
in metropolitan Perth, Western Australia
. The state government's Wetland Atlas defines the body of water as a lake
. The surrounding terrain is low dunes and undulating sand plains. The lake is fed by ground water of the Gnangara Mound
which is contained by a thin layer of clay.
Previous uses have included diatomaceous earth
mining, which may have contributed to changes in the lake's characteristics and ecology. The area is now the subject of a conservation plan and management strategies, and protected from potential disturbance by mining activities.
The Lake reserve is an important part of the management of the mound
Wanneroo wetlands
Wanneroo wetlands are the lakes and swamps that occur on the Swan Coastal Plain of PerthWanneroo wetlands are the lakes and swamps that occur on the Swan Coastal Plain of Perth...
in metropolitan Perth, Western Australia
Perth, Western Australia
Perth is the capital and largest city of the Australian state of Western Australia and the fourth most populous city in Australia. The Perth metropolitan area has an estimated population of almost 1,700,000....
. The state government's Wetland Atlas defines the body of water as a lake
Lake
A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...
. The surrounding terrain is low dunes and undulating sand plains. The lake is fed by ground water of the Gnangara Mound
Gnangara Mound
The Gnangara Mound is an area north of Perth, Western Australia where a large mound of sandy soil reaches an elevation of about 60 metres. It stores about 20 cubic kilometres of fresh water, about one hundred times Perth's current annual water usage. It is currently the single most important source...
which is contained by a thin layer of clay.
Previous uses have included diatomaceous earth
Diatomaceous earth
Diatomaceous earth also known as diatomite or kieselgur/kieselguhr, is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. It has a particle size ranging from less than 1 micrometre to more than 1 millimetre, but typically 10 to...
mining, which may have contributed to changes in the lake's characteristics and ecology. The area is now the subject of a conservation plan and management strategies, and protected from potential disturbance by mining activities.
The Lake reserve is an important part of the management of the mound