Lake Wabby

Lake Wabby is a green-hued barrage lake in Great Sandy National Park on K'gari (Fraser Island), Queensland. Formed when the Hammerstone Sandblow blocked a natural creek, it is the deepest lake on the island. Surrounded by a vast sand dune on one side and eucalypt forest on the other, it is notable for its emerald colour, scenic sandblow setting and gradual infilling by advancing sand.

Visitors can expect a 4WD journey to a sand car park followed by a 1.2 km walk (about 45 minutes each way) across soft sand and over the Hammerstone Sandblow to reach the lake. The setting features a large active sand dune descending into deep green freshwater, bordered by woodland. Visitors can swim in the lake, photograph the contrasting dune and forest landscape, and walk along the sandblow edge. There are no built structures at the lake itself.

Lake Wabby is a barrage lake formed when the advancing Hammerstone Sandblow blocked Wanggoolba Creek, creating a natural dam. It is the deepest lake on K'gari and is gradually being infilled by the moving sand dune, illustrating the island's dynamic sand island geomorphology within the Great Sandy National Park.

K'gari (Fraser Island) is the traditional land of the Butchulla people. Lakes and waterways on the island hold cultural significance as part of Butchulla Country, and the island is inscribed as a World Heritage area for its natural values.