Nah, for that I nominate the basin of the former Aral Sea.
What the communists did to the Aral Sea is a crime against humanity. They diverted the two rivers that flowed into it for irrigation purposes in Uzbekistan, then did nothing as it began to dry up.
Large steel hulled fishing boats left high & dry in the midst of a chemical soaked desert is all that remains except for a sliver of a lake.
I was deployed there. Scorching hot days & freezing nights that weren’t that way when the Aral Sea acted as a weather moderator.
But this happened under socialism, so...no criticism allowed.