The North Pine Dam, also known as Lake Samsonvale, was completed in 1976. Located north-west of Brisbane, Queensland, Australia, you will find this concrete gravity dam with earthfill embankments on abutments.
This dam is a gated dam, allowing the local authority to make controlled water releases during times of heavy rain. Her full capacity is 214302ML. (Ref)
The concrete dam structure is 45 metres (148 ft) high and 1,375 metres (4,511 ft) long and has a discharge capacity of 3,700 cubic metres per second.
Built on a solid rock foundation made watertight by injecting cement grout at a high pressure into boreholes in the rock, the North Pine Dam’s primary function is to provide a safe drinking water supply to the people of north Brisbane and Moreton Bay.
In addition to the main dam, there are three earth-filled embankments built across low ridges to the south-west of the dam .These are known as ‘saddle dams’ (Ref)
Prior to the initial flooding of the valley, many of the surrounding grazing and dairy farms were compulsorily acquired, and the only evidence of these farms is now the names of roads leading to the lake’s shoreline, such as Winn Road and Golds Scrub Lane. Golds Scrub Lane now leads only to the Samsonvale Cemetery Ref
Prior to European settlement, the Pine Rivers area was home to a number of Aboriginal clans belonging to the Turrbal, Kabi (Kabi Kabi or Gubbi Gubbi) and Waka (Wakka Wakka) language groups. These groups enjoyed a considerable amount of social interaction, especially at the time of the bunya feasts in the Blackall Range and the Bunya Mountains.
Archaeological evidence, as well as the oral traditions of Queensland Aboriginal people, indicate that these first inhabitants occupied the land for many tens of thousands of years. Ultimately, however, the local Aboriginal population rapidly declined in numbers due to the effects of introduced diseases, alcoholism and dispersal.
The urban expansion of the 1960s, 1970s and 1980s (from a population of only 8,760 at the 1961 Census, climbing to 13,309 in 1966, 26,187 in 1971, 45,192 in 1976 and 62,575 in 1981) dramatically changed the economic character of the Shire; the rural economy diminished in relative importance as the region became a dormitory suburban area for a workforce employed predominantly in Brisbane. The population reached 140,000 during late 2004 and a total approaching 200,000 is expected by 2021. (Ref)