Lake Burley Griffin is a large lake in the centre of Canberra, Australia's federal capital city. It was created in 1963 after the Molonglo River, which runs through the city centre, was dammed. It is named after Walter Burley Griffin, the architect who won the design competition for the city of Canberra. It should be noted that 'Burley' was Griffin's middle name, not part of his surname. The lake is located in the approximate geographic centre of the city, according to Griffin's original designs. Numerous important institutions, such as the National Library of Australia lie on its shores, and Parliament House is a short distance away. Its surrounds are also quite 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's flow is regulated by the 33 metre tall Scrivener Dam, which is designed to handle a once in 5000 year flood event. In times of drought, water levels can fall below desired limits; so to compensate, water is released from the Googong Dam, located on a tributary of the Molonglo River.