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Groundwater worldwide

Value	1e+7 Km^3
Organism	Biosphere
Reference	John Holdren, Science and technology for sustainable well being, Science 2008 Vol. 319 issue 5862 p.427 box 3
Primary Source	Compiled and rounded from P. Gleick, Ed., The World's Water: 2006-7 (Island Press, Washington, DC, 2006) T. Oki, S. Kanae, Science 313, 1068 (2006) and UN Environment Programme (UNEP), Vital Water Graphics (UNEP, Washington, DC, 2002).
Comments	1 km^3 = 10^9m^3 = 10^12 liters=264×10^9 gallons.
Entered by	Ron Milo - Admin
ID	101078