Forest Lake is an outer south-western suburb of the City of Brisbane, Queensland, Australia. In the 2021 census, Forest Lake had a population of 22,676 people. The centrepiece of Forest Lake is an $8.9 million, 10.9 hectare man-made recreational lake, with a perimeter of 2.7 kilometres. $1.8 million was spent on the dam wall, outlet structure and boulevar…Forest Lake is an outer south-western suburb of the City of Brisbane, Queensland, Australia. In the 2021 census, Forest Lake had a population of 22,676 people. The centrepiece of Forest Lake is an $8.9 million, 10.9 hectare man-made recreational lake, with a perimeter of 2.7 kilometres. $1.8 million was spent on the dam wall, outlet structure and boulevard embankment. It has an average depth of 2.6 metres with a 300 to 600 mm around the safety ledge, deepening to 4 metres in the centre. The volume of the lake is 310,000 cubic metres or 269 Olympic sized swimming pools. Surrounding the lake is 3.5 kilometres of pedestrian and cycleways and 8 hectares of adjacent parkland. It was completed and opened in 1994.