Airlie Island 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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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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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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The suburb sits in the south-east corner of the Gnangara Mound, close to the Darling Scarp. Topographically, the majority of Ellenbrook's area sits between 40-50 metres above sea level on the mound, with parts of Coolamon and Malvern Springs situated on hills that reach peaks of 65 metres. The northern village…

Average elevation: 49 m

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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.

Average elevation: 4 m

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From 1964 to 1965, 12 sounding rockets were launched from Carnarvon to a maximum altitude of 120 km (75 mi).

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