Secrets of Kluane Lake: Glacial Dust, Turquoise Water & Ancient Ice

A lake of moods

Kluane Lake changes character by the hour. Calm and mirror-still one moment, it can be whipped into whitecaps by mountain winds the next. Its colour, milky turquoise, comes from fine glacial silt suspended in the water, and light plays across it constantly. The scale is immense: the lake and its mountain backdrop dwarf everything around them.

Sheep Mountain and wildlife

At the lake's southern end, Tachäl Dhäl (Sheep Mountain) is named for the Dall sheep that graze its slopes, often visible with binoculars from the Kluane visitor centre at its base. The area is also good for spotting other wildlife and offers hiking with huge views. Stop at the centre for orientation and current trail and wildlife information.

A river that stopped being a river

In late May 2016, over the course of just four days, the Slims River, which had fed Kluane Lake for centuries, essentially vanished. The cause was the retreating Kaskawulsh Glacier: as the ice pulled back, its meltwater found a steeper path south into the Kaskawulsh River instead of north into the Slims, redirecting the flow from the Bering Sea watershed to the Pacific almost overnight. Geologists called it the first documented case of river piracy in modern scientific history, and Yukon's own geological survey noted it was the first time anything like it had happened here in roughly 350 years.

The effects rippled outward immediately. Kluane Lake's water level dropped several metres within a season, boat launches at Burwash Landing and Destruction Bay were suddenly left high and dry, and the exposed lakebed and old river valley now kick up genuine dust storms on windy days, sometimes bad enough to close visibility along the Alaska Highway. In one particularly strange twist, a remote inlet on the lake's east side called Cultus Bay was cut off entirely from the main lake by a newly exposed gravel bar as water levels fell, and it became its own separate body of water, now known as Cultus Lake, several degrees warmer than Kluane itself and swimmable on its own. A bay that simply stopped being a bay.

It's a genuinely remarkable story, dramatic enough that it likely deserves its own dedicated feature down the road rather than a full telling here. What's worth knowing for a visit is this: the silt flats, the dust, and the shifting shoreline you see today aren't a static landscape. They're the visible result of one of the fastest, strangest pieces of geology anyone has documented in modern times, and it happened here, in a single spring, within living memory.

Things to do

Camp at lakeside campgrounds, hike the nearby trails, photograph the ever-shifting light, and, if you're equipped and cautious about the wind, paddle or boat. Flightseeing tours over the adjacent icefields often launch from this area, adding an aerial dimension to the visit. For something few visitors think to look for, Cultus Lake, the new lake born from Kluane's dropping water level, is reportedly a few degrees warmer than Kluane itself and genuinely swimmable, though reaching it means some remote backcountry travel on the lake's east side rather than a roadside stop, so treat it as a find for those already equipped to explore off the beaten path.

Visiting well

Winds can rise fast, so respect the water and check forecasts before paddling. Carry bear spray on the trails, bring layers for exposed, breezy conditions, and give yourself time simply to sit and watch, Kluane Lake is one of those places that rewards stillness as much as activity.

As a stop on an Alaska Highway road trip or a destination in itself, Kluane Lake delivers the raw, elemental Yukon at its grandest.