Bangkok Floods Are a Drainage Problem, Not a River Problem (And the Numbers Prove It)
Every October, travellers in Bangkok watch the Chao Phraya. It is the visible thing, it is in all the photographs, and it is the wrong thing to watch. During the 2026 flooding the river sat about 40 centimetres below its banks at key monitoring stations while 93 main roads were severely flooded. The water on the street did not come from the river. It came from the sky and had nowhere to go. That distinction is not pedantry, because the two problems behave completely differently, and only one of them is predictable from anything a tourist can see. The figures, as published Figure Value Source Chao Phraya level during the flooding About 40 cm below its banks Reported monitoring stations Rainfall across Bangkok in 48 hours Nearly 300 mm City flood control centre Rainfall that overloads local drainage 100–150 mm Water expert Chawalit Chantararat Main roads severely flooded 93 Governor Chadchart Sittipunt Major canals at critical level At least 5 Same Total pumping and tun...