Interesting stuff
World's deepest lake shows 8 year turnover "Lake Baikal, in Siberia, the deepest lake in the world, holds a fifth of the world's supply of fresh water. The researchers found that 12.5 percent of the deep-water inventory of the lake is renewed each year, corresponding to a mean deep-water residence time of eight years. Some water at intermediate depths had a much slower turnover rate of once every 14 to 16 years."
