The Happy Valley Dam is an off-stream earth-filled embankment dam, located in Happy Valley, a southern suburb of Adelaide, in South Australia. Constructed in 1897, the resultant reservoir, the Happy Valley Reservoir was built to supply potable water to Adelaide when the total population of city was 315,200. In 2005, the reservoir supplied over half a million people, from Adelaide's southern extent to the city centre.
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Happy Valley is a metropolitan suburb of Adelaide, South Australia. It is located 20 km south of the Central Business District of Adelaide.
Within the suburb is the Happy Valley Reservoir accompanied by South Australia's largest water treatment plant, responsible for supplying water to much of the Adelaide metropolitan area.
Although it is now encompassed by suburbs, it still retains a relatively semi-rural character due to retention of native flora and vegetation surrounding the Happy Valley Reservoir, as well as parklands and golf courses along its border.
1.6 km
O'Halloran Hill is a suburb in the south of Adelaide, South Australia, situated on the hills south of the O'Halloran Hill Escarpment, which rises from the Adelaide Plains and located 18 km from the city centre via the Main South Road. The suburb is split between the Cities of Marion and Onkaparinga, and it neighbours Happy Valley, Hallett Cove, Trott Park and Darlington. It includes a large area of former farmland and commercial vineyards known as the Glenthorne Estate, which in 2018 became the Glenthorne National Park–Ityamaiitpinna Yarta.
1.7 km
Reynella East is a metropolitan suburb of Adelaide, South Australia. It lies within the City of Onkaparinga and has postcode 5161. It is one of the smallest suburbs in South Australia.
1.9 km
Reynella East College is a public school located in the southern Adelaide suburb of Reynella East, South Australia. It was opened in 2011 after the formal closure of Reynella East Primary School and Reynella East High School. Reynella East College is one of the largest public schools in South Australia with over 2,000 students from preschool to Year 12.
2.0 km
Happy Valley is a closed railway station in Adelaide, South Australia. It was a ground level stopping place during the passenger transport days of this line, and a 1965 reference mentioned that it was no longer used at that date.
A road bridge, carrying South Road on a diversion by-passing Reynella, crossed the line shortly after Happy Valley.
The stop is now completely destroyed, the entire Willunga railway line having been dismantled in 1972, and the site is now the location of the Panalatinga Road interchange of the Southern Expressway and Main South Road.
The dam and reservoir were added to the South Australian Heritage Register on 8 November 1984.