Even if this was technologically feasible, maybe the cost would be prohibitive. It would be much cheaper to not build the dam in the first place or close it, or just build alternative energy sources (solar, wind, etc.)
A damn is a battery. In solar threads, when they write about more batteries, they don't give a damn, but they mean it.
This discussion was about failing damns or spillways and how to repair them. Solar can fall to strong wether events too and damns provide base grid power.
Its could also be added after construction. A set of pipes of coolant lines and warmed woodslushie that become a temporary solution to a catastrophic development.
Its basically installing a industrial sized ac and a wood slushie sprinkler system.
