Lake Louise is a lake in Alberta, Canada. The glacial lake is located in Banff National Park, 5 km (3 mi) from the hamlet of Lake Louise and the Trans-Canada Highway. 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 (0.3 sq mi) and is drained through the 3 km long Louise Creek into the Bow River. http://en.wikipedia.org/wiki/Lake_Lou...)