The emerald colour of the water comes from rock flour carried into the lake by melt-water from the glaciers that overlook the lake. The lake has a surface of 0.8 km2 and is drained through the 3 km long Louise Creek into the Bow River.
Fairmont's Chateau Lake Louise, one of Canada's grand railway hotels, is located on Lake Louise's eastern shore. It is a luxury resort hotel built in the early decades of the 20th century by the Canadian Pacific Railway.
At the time we visited in May this year, the Lake was still essentially frozen and only along the edges can you see the start of the Spring “thaw” … The Northern winter in 2014 was severe.