Photo: Chip Phillips
Lake Abraham is a man-made lake on the North Saskatchewan River in western Alberta, Canada. Lake Abraham was created in 1972 and named after Silas Abraham, a nineteenth century resident of the Saskatchewan River valley.
The blue lake gets it's color from the rock flour, fine-grained particles of rock, as many glacier lakes do. More interestingly though, the lake gets it's bubbles from rising methane that forms in pockets as the lake freezes over for winter. It is a beautiful phenomenon to see.
You can check out a full gallery of Lake Abraham here.