Thomsons Lake
| Thomsons Lake | |
|---|---|
| Location | Perth, Western Australia |
| Coordinates | 32°09′00″S 115°49′45″E / 32.15000°S 115.82917°ECoordinates: 32°09′00″S 115°49′45″E / 32.15000°S 115.82917°E |
| Type | Brackish seasonal groundwater |
| Primary outflows | groundwater; evaporation |
| Basin countries | Australia |
| Designation | Thomsons Lake Nature Reserve; Forrestdale and Thomsons Lakes Ramsar Site |
| Max. length | 1.6 km (0.99 mi) |
| Max. width | 1.3 km (0.81 mi) |
| Surface area | 5.38 km2 (2.08 sq mi) |
| Surface elevation | 12 m (39 ft) |
Thomsons Lake is a lake nature reserve in the City of Cockburn, Western Australia, approximately 25 kilometres (16 mi) south of the central business district of Perth, the state capital, and on the southern fringes of the Perth metropolitan area. It in the suburb of Beeliar, 7 kilometres (4.3 mi) south-west of Jandakot Airport. It is a still largely natural wetland, with adjoining native vegetation, surrounded by land developed for housing and agriculture, that regularly supports large numbers of shorebirds and other waterbirds.
The lake is listed on the Register of the National Estate. With the similar Forrestdale Lake 10 kilometres (6.2 mi) to the east, it forms the Forrestdale and Thomsons Lakes Ramsar Site, designated under the Ramsar Convention on 7 June 1990 and recognising it as a wetland of international importance. The lake and its surrounds are registered as Nature Reserve 15556, vested in the Conservation Commission of Western Australia and managed by the Department of Conservation and Land Management. The reserve is also part of the Beeliar Regional Park.
Thomsons Lake Nature Reserve, including the lake and adjacent woodland, has an area of 538 hectares (1,330 acres). The lake is a shallow, brackish, seasonal lake with a large area of open water when full. It has extensive fringing sedgeland typical of the Swan Coastal Plain, and is a major breeding site, migration stop-over and semi-permanent drought refuge area for waterbirds. It usually dries out during the summer, though occasionally retaining some water through the year. It is fenced to exclude feral predators. It is mainly used for birdwatching, nature walks, and general recreation by surrounding residents. Within the reserve there is a network of fire-breaks and management access tracks used for bushwalking, while horse riding is only allowed on a perimeter track outside the vermin-proof fence.
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