Berkeley River topographic map

Perth, the capital of Western Australia, is situated on the Swan Coastal Plain, a flat expanse of sandy soil nestled between the Indian Ocean to the west and the Darling Scarp to the east. The Darling Scarp, also known as the Darling Range, is a low escarpment that extends north–south, marking a distinct…

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Due to its elevation, Bluff Knoll and the surrounding peaks of the Stirling Ranges are some of only a few places to experience regular snowfalls in Western Australia. When snow is forecast by the Bureau of Meteorology it attracts hikers from all over the southwest region to experience it.

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One theory is that the whole area was uplifted by crustal movements in the Miocene, and since then, erosion by wind and rain has reduced its thickness. The plain has most likely never had any major defining topographic features, resulting in the extremely flat terrain across the plain today.

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Rockingham is topographically flat, has sandy soils and coastal vegetation. It has a northern aspect to Cockburn Sound, from Rockingham Beach and Palm Beach.

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Topographically, most of Aveley sits on even ground between 25-30 metres above sea level. The Ellen Brook cuts through a steep valley to the east. The western edge of the suburb is situated on a large hill on the Gnangara Mound, reaching 50 metres above sea level.

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