page_title: Lake Burley Griffin
section_title: Lakes, islands and foreshore
hierarchical_section_title: Lake Burley Griffin / Construction / Lakes, islands and foreshore
caption_attribution_description: English: Kings Ave Bridge under construction
context_page_description: Lake Burley Griffin is an artificial lake in the centre of Canberra, the capital of Australia. It was completed in 1963 after the Molonglo River—which ran between the city centre and Parliamentary Triangle—was dammed. It is named after Walter Burley Griffin, the American architect who won the competition to design the city of Canberra.
  Griffin designed the lake with many geometric motifs, so that the axes of his design lined up with natural geographical landmarks in the area. However, government authorities changed his original plans and no substantial work was completed before he left Australia in 1920. Griffin's proposal was further delayed by the Great Depression and World War II, and it was not until the 1950s that planning resumed. After political disputes and consideration of other proposed variations, excavation work began in 1960 with the energetic backing of Prime Minister Robert Menzies. After the completion of the bridges and dams, the dams were locked in September 1963. However, because of a drought, the lake's target water level was not reached until April 1964. The lake was formally inaugurated on 17 October 1964.
context_section_description: The excavation of Lake Burley Griffin began in 1960 with the clearing of vegetation from the floodplain of the Molonglo River. The trees on the golf course and along the river were pulled up, along with the various sports grounds and houses.
  During major earthworks, at least 382,000 cubic metres (500,000 cu yd) of topsoil was excavated. It was collected for use at several public parks and gardens, including the future Commonwealth Park on the northern shore. It was also used to create the six artificial islands including Springbank Island. The island was named after the former Springbank Farm that was situated there. Land excavated to create a sailing course at Yarralumla was used for the thematically named Spinnaker Island to its north, while excavated stone was moved beside the Kings Avenue Bridge at the eastern edge of the central basin from Aspen Island.
  Care was taken to excavate the entire lake floor to a depth of at least 2 metres (6.6 ft) to provide sufficient clearance for boat keels. Another reason given for this was that mosquitoes would not breed nor would weeds grow at such a depth. A soil conservation program was launched in the catchment and bed load traps were installed to minimise loss of earth. The traps have been used as a source of sand and gravel for building sites. Drainage blankets were used to prevent the loss of groundwater beneath the lake.
  During the following phase of work, four types of lake margin were constructed. On the southern side of the Central Basin, low reinforced concrete retaining walls were used, while on the eastern side, grouted rock wall can be seen near Commonwealth Park, as well as much of the East Basin. Sand and gravel beaches were built to cater for lakeside recreational pursuits. These are mostly prevalent on the western half of the lake complex. Rocky outcrops, steeply sloping stable shores with water vegetation such as bullrushes were also used. This treatment is evident in the West Lake in Yarralumla. William Holford and Partners were responsible for the foreshore landscaping, and over 55,000 trees were planted in accordance with a detailed scheme. Eucalypts were preferred so as to maintain the natural colour of the city landscape.
caption: Southern end of Kings Avenue Bridge under construction with Australian War Memorial at far left c. 1961
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