Reasons why three gorges dam is highly unlikely an issue.
1. spillway capacity: 80,000 cubic meter/s. inflow has been 32,000-40,000 cubic meter/s lately
2. normal peak water level is 175m, and current water level is only 157m.
Wuhan can get flooded, but that's hurricane sandy-level of problem for China, IMO.
How three gorges dam (TGD) works in a typical year?
Precipitation in Yangtze river watershed above TGD is very seasonal (see the chart for Chongqing (upstream)), so TGD loads up water (for power generation + navigation) in Sept-Oct in anticipation for the dry winter season.
The naive interpretation:
US is getting much better! (death/case ratio)
Our treatment rocks!
COVID is getting weaker!
(! used as excited it-has-finally-turn-into-flu bros and sis insist) /s
2/ faulty assumptions in the naive analysis:
1. daily new case # accurately reflects daily new symptomatic COVID patients, without realizing that (a) lack of test kits in the US in march pushed the actual peak (red) later) (b) many tests were reported 5-8 days late
3/ 2. daily death # is not revised up later (death # gets revised in CDC reports and many state reports)
3. age distribution of COVID new cases remains constant.