Hydroelectric dams are great as long as they displace someone else. The oldest continuously habited place in North America (for 10K years) is now submerged bec

Hydroelectric dams are great as long as they displace someone else. The oldest continuously habited place in North America (for 10K years) is now submerged because of a dam. Not only was it a loss of a lot of archaeological value, but real people who were living there had to be displaced. (Also a loss in the natural world - the most voluminous waterfall in N America was submerged there as well).