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Proposed hydropower dam projects in South America compiled from each country's ministry of energy and/or planning agency between 2009 and 2011. The original data come from both online databases and official energy strategic plans. Data were compiled by Paulo Petry of The Nature Conservancy. In total 2,215 projects make up this planned hydropower expansion, which entail adding dams to 673 free-running rivers that are currently free of dams and adding dams to 388 rivers already dammed.
