Scientists Putting Cold Water In Rivers To Keep Fish Cooler?

For an energy-efficient alternative, the researchers reconfigured the river’s flow by rerouting some of the water into an underground trench, allowing it to naturally cool before returning to the river. Although this method resulted in only a few degrees Celsius of cooling, the fish were observed gathering in the passively cooled water throughout the summer.

John Ackerman, a consulting engineer based in Hazleton, Pennsylvania, who was not involved in the experiment, said that more research is needed to determine how many of these sites would need to be constructed and maintained to significantly benefit fish populations. Additionally, energy costs must be minimized for these solutions to be sustainable.