Blue Lake / Warwar

Blue Lake / Warwar
Panorama of the Blue Lake in late December
Blue Lake / Warwar Location in South Australia
Location	Mount Gambier, South Australia
Coordinates	37°50′48″S 140°46′41″E / 37.84667°S 140.77806°E / -37.84667; 140.77806
Type	Monomictic crater lake
Basin countries	Australia
Max. length	1,087 m (3,566 ft)
Max. width	657 m (2,156 ft)
Surface area	60 ha (150 acres)
Average depth	72 m (236 ft)
Max. depth	77 m (253 ft)
Residence time	3.45 years
Surface elevation	Approx. 20 m (66 ft)
Islands	None
Settlements	None

Blue Lake / Warwar (The Blue Lake) is a large, monomictic, crater lake located in a dormant volcanic maar associated with the Mount Gambier maar complex. The lake is situated near Mount Gambier in the Limestone Coast region of South Australia, and is one of four volcanic crater lakes originally on Mount Gambier maar. Of the four lakes, only two remain, the other one being Valley Lake / Ketla Malpi; the other two, Leg of Mutton Lake / Yatton Loo and Brownes Lake / Kroweratwari, dried up as the water table dropped.