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> These are the factors I would like to know more about for the Brazil and China flooding... Is it just bad governmental town planning? The systems Porto Alegre and Canoas had in place used to work. When the river there goes over 3 meters it starts to flood some places, okay? Once every few years there was a flood of like, 3.5 meters, 3.7 sometimes. Those were floods that rose slowly, giving ample time to answer to situations as they arose. In this case, on the 2nd of May, the river reached 3 meters. By midnight, the river was at 3.60 meters already. 24 hours later, the river was at 4.9 meters, and it still rose, slowly now, to 5.3 meters. The system that was in place was completely overwhelmed. Pumping stations failed and the water started coming through the pumping stations, for example. That said, yes, the writing was on the wall. If a place regularly floods a bit to the point you need to have dykes and pumping stations in place, eventually it will flood a lot. |