why is lake pukaki turquoise
The glacial feed to the lakes gives them a distinctive blue colour, created by glacial flour, the extremely finely ground rock particles from the glaciers. Lake Pukaki covers an area of 178.7 kmÂ², and the surface elevation of the lake normally ranges from 518.2 to 532 metres above sea level.he lake is now part of the Waitaki hydroelectric scheme. The lake's original outflow was at its southern end, into the Pukaki River. The outflow has been dammed, and canals carry water from Lake Pukaki and Lake Ohau through the Ohau A power station to Lake Ruataniwha.