Lake Illawarra, Coastal lake in New South Wales, Australia
Lake Illawarra is a coastal water body in New South Wales that spans a considerable area with relatively shallow depths throughout. A permanent opening at Windang links this lake to the Tasman Sea, allowing tidal exchange between the two bodies of water.
Matthew Flinders and George Bass named the water body during their 1796 exploration, calling it Tom Thumb's Lagoon after their small vessel. The Tharawal and Wadi Wadi peoples inhabited the shores long before European arrival.
The lake holds significance for the Tharawal and Wadi Wadi peoples, whose connections to the area are visible through archaeological sites scattered around the shoreline. Local communities continue to gather here for fishing and recreation, maintaining everyday relationships with the water.
Several boat ramps provide access to the water for those wanting to fish or enjoy water activities. The foreshore areas feature picnic tables, playgrounds, and fish cleaning facilities for visitors.
The Tallawarra Power Station on the western shore uses lake water in its cooling system, demonstrating an unusual integration of industrial infrastructure. This specialized water management approach allows the facility to operate while maintaining the lake ecosystem.
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