Heavy metal pollution is one of the major problems of lakes and wetlands all over world. It is responsible for causing serious threats to flora and fauna especially humans. Kunthbyog is natural freshwater, mid altitude lake situated at Rewalsar town, Mandi district of Himachal Pradesh, India 1750 meter above mean sea level. Study was conducted in (2011-2012) to find out heavy metal contaminations and their seasonal variations in lake, if any. Water samples were analyzed for water quality appraisal of lake by inductively coupled plasma emission spectrophotometer (ICP-ES).