@XianyangCB@thocpodcast@GangloSaxon I'm not really aiming at anything, just talking about the reality of water control on the Yellow river, and how certain methods of flood management were historically more successful than others.
@XianyangCB@thocpodcast@GangloSaxon Been reading this btw, which goes into some of this in heavy detail. Highly recommend for putting a lot of Imperial Waterworks and flood disasters into context. https://t.co/Bw9OACku6u
@XianyangCB@thocpodcast@GangloSaxon Well its more like if you cleaned your house in a way that attracted extra dirt every time you did it vs a way that took more work. There are ways to manage the river that mitigate the problem people knew about them, but they took more money/time so they often didn't get done.
@thocpodcast@XianyangCB@GangloSaxon So its not just get rid of the dams, you have to get rid of some dams, keep others and then have an entire engineering/labour system to keep the rest of it running. Otherwise the river will just overflow its banks (though in a less dramatic way) every year.
@thocpodcast@XianyangCB@GangloSaxon Well there were ways to manage the river better, and they knew about them, but they required more upkeep. It involves lots of dredging, wiers, drainage canals, overflow ponds, etc. When Dynasties kept them up they drastically reduced instances/intensities of flooding.
@XianyangCB@thocpodcast@GangloSaxon It's more complicated than 'damns = bad' but essentially once you start building dams and levees to solve the problem you have to keep building more and more as the problem grows worse and worse.
@XianyangCB@thocpodcast@GangloSaxon Its actually specific to how the yellow river works. It has a huge amount of silt, damns and other things slow down the flow of water, which makes more silt deposit vs washing out to sea. This raises the level of the river and makes it breach its banks and flood more dramatically
@XianyangCB@thocpodcast@GangloSaxon Well the damns and levees directly contribute to the severity of flooding. They make the floods less frequent but much worse when they do happen.
Lmao ok. Guess its time to fully pack it in here. You can find us here (anyone familiar with chinese social media knows about screenshotting text. Never thought I'd need it in the US)