Ben Chifley Dam
Ben Chifley Dam is a rock and earth-fill embankment dam across the Campbells River in New South Wales, Australia. It is located 17 kilometres (11 mi) upstream of Bathurst. The dam supplies potable water to the city of Bathurst. Water is released into the Campbells River which flows into the Macquarie River before being captured at the water treatment facility at Gorman's Hill, a suburb of Bathurst. It is 34.4 metres (113 ft) high and 455 metres (1,493 ft) long and holds back 30,800 megalitres of water when at full capacity. It has a 455 metres (1,493 ft) long side-channel concrete spillway and six plug auxiliary fuse plug spillway.

History
Construction of Ben Chifley Dam started in 1948 and was completed eight years later. It was officially opened by the Premier of New South Wales, Joseph Cahill on 10 November 1956. The dam then succeeded Winburndale Dam as the potable-water supply for Bathurst. Winburndale Dam had been built in 1934 with an expected life of 20 years. Since completion of Ben Chifley Dam, Winburndale has been used to supply raw water for park watering and industrial use. Plans to upgrade the Ben Chifley Dam commenced in 1989 after it was realised it did not meet the New South Wales Dam Safety Committee's safety recommendations and could fail in the event of a severe flood. A flood in August 1998, the worst recorded in 175 years, caused water to run over the spillway at a depth of 2.74 metres (9.0 ft), just 0.1 metres (0.33 ft) below the level at which the wall was expected to fail. An evacuation plan was implemented downstream. Construction to upgrade the dam started in 1999. The top of the wall was raised by 5.4 metres (18 ft) and the spillway was extended by 30 metres (98 ft), increasing the dam's capacity from 16,000 megalitres to 30,800 megalitres.