Blue Lake

Blue Lake, known as Karboora, is a natural window lake in Naree Budjong Djara National Park on North Stradbroke Island (Minjerribah) in Redland City, Queensland. Fed by groundwater, the lake is renowned for its clear blue water, white sandy margins and surrounding eucalypt and tea-tree forest. It is culturally significant to the Quandamooka people and valued for its ecological and geomorphological features as a rare window lake system.

Visitors can expect a tranquil freshwater lake set within coastal bushland, accessed via a sandy bushwalking track through eucalypt forest and heath. The lake has clear blue water fringed by white sand and tea-trees, with a viewing platform and interpretive signs near the shore. There is no beach development; the setting is natural and quiet, suitable for sightseeing, photography and nature observation. Swimming and boating are not permitted in the lake itself.

Blue Lake is a geomorphologically significant window lake where the water table intersects the land surface, formed within the sand island system of North Stradbroke Island. The island's sand mass and freshwater lake systems have been studied for their Quaternary geological evolution and ecological values, and the area is now protected within Naree Budjong Djara National Park.

Known as Karboora, Blue Lake is culturally significant to the Quandamooka people, the Traditional Owners of Minjerribah (North Stradbroke Island). The lake and surrounding Country hold traditional cultural values and are part of the Quandamooka native title area, with interpretive information acknowledging its importance.