The official death toll of 142 is as reliable as their CCP Virus deaths. The purposely flooded rural regions to save their big cities, in the middle of the night to avoid compensation, protest, and publicity.
Common tactic, worldwide. See "Birds Point Levee, Missouri". (I was under 20 miles away, straight line distance, at the time.) Blowing that levee took pressure off the entire system, including the big TVA lakes (Barkley, KY Lake) which were full to the gills, so to speak.