Water Scarcity: Forecasting the Future With Spotty Data

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Science  09 Aug 2002:
Vol. 297, Issue 5583, pp. 926-927
DOI: 10.1126/science.297.5583.926

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While global water models warn of parched days ahead, scientists worry that another pressing scarcity is information. In countries rich and poor, water data are often based on patchy estimates; along with confusion, water miscalculations have brought nasty surprises. And the knowledge gap shows little sign of improving.