[bobthepanda]

* many rivers have some kind of migratory fish integral to ecosystems in both the river and whatever the outlet is, so you can’t just mark rivers as discrete segments and say the effect is isolated

* the oceans haven’t warmed by all that much and we are already seeing the impacts, it’s not really that much of a stretch to say rivers would see similar effects

* given humanity’s track record with the question “how bad could this be?” and unintended consequences, erring on the side of caution seems warranted. In particular, humanity has a bad track record with river management

[Manuel_D]

Remember, though, the consequence of shutting the reactors down is an increase in global climate change. The consequence of running the reactors are increased river temperatures in a handful of rivers - which as you point out are also impacted by climate change!