Why Kalamalka Lake is Green

Many people ask why Kalamalka Lake turns that surreal tropical green in the summer.  There are many interesting theories but the real reason the lake turns to that amazing turquoise colour is really quite simple. 

Kal Lake is one of only a few incredibly rare and unique 'marl lakes.'  A marl lake is a lake that has a large amount of calcium carbonate deposits present which changes the colour of the water as the water temperature increases.  As glaciers receded in the region, they left behind these limestone deposits which is what gives Kalamalka Lake that alluring tropical green hue.

As the water temperature drops again later in the year, the calcium carbonate is dissolved and so too is the stunning green that comes with it but you can still see some remaining green spots even in the winter.

Despite the strange myths, rumours and theories, the reason why Kalamalka Lake is green has been thoroughly explained from a scientific point of view.  Science aside, looking at and experiencing Kalamalka Lake during the spring and summer months is a true blessing!

Kalamalka Lake is located just south of Vernon, British Columbia in the Okanagan Valley.  It is approximately 16 km long with it's widest point being three kilometers.  Kal Lake has an average depth of 58.5 meters with it's deepest point being 142 meters. 

It is a very popular recreational lake that attracts tourists, boaters and outdoor enthusiasts from all over the world - particularly due to it's stunning appearance.  Rumor has it that National Geographic named Kalamalka Lake as being in the top 10 most beautiful lakes in the world.  When you see it in the summer time with that amazing colour, even if that wasn't true, you would be hard pressed to deny that claim.  It's positively stunning!