The massive landslip in the Dart Valley has changed the colour of Lake Wakatipu - temporarily, at least.
Queenstown Lakes District Council harbourmaster Marty Black said the change in water colour was "quite noticeable" following Saturday's slip, changing to a "more turquoise" colour, similar to Lakes Tekapo and Pukaki, near Mount Cook.
While heavy rain in the headwaters had caused water to look like "pea soup", Mr Black said there was "no question" the lake had already changed colour.
"Across the lake from Cecil Peak towards Kelvin Heights [the other day] you could see a distinct line from the real blue to the turquoise."
The phenomenon had been caused by the glacial rock falling within the Te Koroka/Slip Stream area at Sandy Bluff, about 10km above Chinamans Bluff.