River water temperature "crisis"

From the University of Washington A press office, another modeled scenario suggesting that small 0.8C climate change signal will find its way into the rivers, overheat the water, and thus overheat the power plants, causing shutdown, darkness, and rioting in the streets.

[Earthling-1]

Oh dear, yet another "Crisis."

[Earthling-1]

One more to add to the 'river' section of the Warmlist, which already contains river flow impacted, river rerouted, rivers raised:
http://www.numberwatch.co.uk/warmlist.htm

[Camille Pegram]

Yikes.

[Earthling-1]

Hasn't "that small 0.8C climate change signal" had enough time to "find its way into the rivers, overheat the water, and thus overheat the power plants, causing shutdown, darkness, and rioting in the streets" yet?