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Dam Capacity - Total dam capacity


Canada is the top country by total dam capacity in the world. As of 2015, total dam capacity in Canada was 841.5 km3 that accounts for 22.56 % of the world's total dam capacity. The top 5 countries (others are Russian Federation, the United States of America, Brazil, and Venezuela (Bolivarian Republic of)) account for 86.50 % of it. The world's total total dam capacity was estimated at 3,729.72 km3 in 2015.

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Total cumulative storage capacity of all dams in each country. The value indicates the sum of the theoretical initial capacities of all dams, which does not change with time. The amount of water stored within any dam is likely less than the capacity due to silting. Data on small dams may not be included, although their aggregate storage capacity is generally not significant. Detailed information on dams can be accessed in regional geo-referenced dam databases on