Canada’s glaciers are estimated to cover 200,000 km2. About three-quarters of the area of glaciers in Canada is located on the Arctic Islands, with a further 24% located in the interior ranges of the Rocky Mountains, and along the coast of the Pacific Ocean drainage area. 9 Melt from glaciers in the Rockies is an important source of water in summer months; however, many of these glaciers are receding and thinning.