[Pontiac]

So, why does the US restrict discharge temperature? I realize the design is much simpler if you can just dump 120 degree F water back into the river. From an engineering point of view, it is no-brainer. But are there actual environmental impacts that are worth avoiding?

In my experience living on Lake Erie near several power plants with hot water discharge pipes in to the lake, some of the best fishing is on or near those hot water discharges.

[chainsaw]

some of the best fishing is on or near those hot water discharges.

But are the fish good to eat? Sometimes the water gets too warm and the fish health is compromised.