There are negative consequences to hydropower. I think it's great, but we are changing the flow of a river in an enormous way. We can't pretend that doesn't have an ecological impact.
Now, to be fair, the way the US runs nuclear plants, I think we use rivers for cooling the towers as well, so we have a huge impact on the local waterways when we do that (raised temperature, reduced flow etc)
Nothing is perfect. But that doesn't mean we shouldn't be trying to use a combination of the best energy sources we are technologically able to use. If we were a truly logical society we would honestly tabulate the risks and damages of each technology and use a mixed basket of all of them, weighted to risk of disaster, long term impacts of use etc. But we've never been logical, or smart.
victor809 wrote: