that's not accurate, or at least what you implied is not. No matter if the dam was there, the same amount of water would have gone through. If anything, the dam can function as a cpacitor and smooth out rainfalls etc. to not make it so damaging as it had been naturally.As far as China is concerned, they picked up food imports massively last year because of the huge floods along the Yangtze. This was largely unreported in Western media. The Three Gorges Damn was releasing far more water than it should have downstream in order to prevent damn collapses and catastrophic flooding further upstream, net result being harvests being wiped out downstream. Prices for staples such as corn, wheat, and pork went through the roof. That's why the US was exporting so much to China.