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For hydroelectricity to work a large, fast flowing body of water or river is needed and it has to be controlled by a dam and a large reservoir, those would need to be man made. Things that keep hydroelectricity from widespread use is the cost of building, the time to build, the environmental impacts such as possible flooding of entire valleys or towns and fishing impacts and the cost to prevent siltation. Building of hydroelectricity plants has caused many arguments and debates, so many officials do not want to deal with the issue.

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