Moraine Lake is a glacially fed lake in Banff National Park, 14 kilometres outside the Village of Lake Louise, Alberta, Canada. It is situated in the Valley of the Ten Peaks, at an elevation of approximately 1,885 m. The lake has a surface area of 0.5 square kilometres.
The lake, being glacially fed, does not reach its crest until mid to late June. When it is full, it reflects a distinct shade of blue. The color is due to the refraction of light off the rock flour deposited in the lake on a continual basis.
Moraine Lake is well known for the multitude of grizzlies that inhabit the surrounding valley. For this reason, the park may require you to hike in groups of six, and may occasionally close off trails completely.