Lake Burley Griffin

Lake Burley Griffin
Lake Burley Griffin viewed from Black Mountain Tower
Lake Burley Griffin Show map of Australian Capital Territory Lake Burley Griffin Show map of Australia
Location	Canberra, Australian Capital Territory (Map)
Coordinates	35°17′36″S 149°06′50″E / 35.29333°S 149.11389°E / -35.29333; 149.11389
Lake type	Artificial lake
Primary inflows	Molonglo River, Sullivans Creek, Jerrabomberra Creek
Primary outflows	Molonglo River
Catchment area	183.5 km2 (70.8 sq mi)[1]
Basin countries	Australia
Max. length	11 km (6.8 mi)
Max. width	1.2 km (0.75 mi)
Surface area	6.64 km2 (2.56 sq mi; 1,640 acres)
Average depth	4 m (13 ft)
Max. depth	18 m (59 ft)
Water volume	33,000,000 m3 (1.2×109 cu ft; 33 GL)
Surface elevation	556 m (1,824 ft)
Dam	Scrivener Dam
Islands	6 (Queen Elizabeth II, Springbank, Spinnaker, others unnamed)
Sections/sub-basins	East Basin, Central Basin, West Basin, West Lake and Tarcoola Reach, Yarramundi Reach
Settlements	Canberra

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 architect who won the competition to design the city of Canberra.^[2]

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 on the lake before he left the project 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 Australian 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.

The lake is located in the approximate geographic centre of the city, and it is the centrepiece of the capital in accordance with Griffin's original designs. Numerous important institutions, such as the National Gallery, National Museum, National Library, Australian National University and the High Court were built on its shores, and Parliament House is a short distance away. Its surrounds, consisting mainly of parklands, are popular with recreational users, particularly in the warmer months. Though swimming in the lake is uncommon, it is used for a wide variety of other activities, such as rowing, fishing, and sailing.

The lake is an ornamental body with a length of 11 kilometres (6.8 mi) and a width, at its widest, of 1.2 kilometres (0.75 mi). It has an average depth of 4 metres (13 ft) and a maximum depth of about 18 metres (59 ft) near the Scrivener Dam. Its flow is regulated by the 33-metre-tall (108 ft) Scrivener Dam, designed to handle floods that occur once in 5,000 years. In times of drought, water levels can be maintained through the release of water from Googong Dam, located on an upstream tributary of the Molonglo River.