A Buddhist temple on the banks of Chaopraya River in Bangkok is surrounded by floodwaters as Thailand experiences its worst flooding in half a century. Photo / AFP
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A Buddhist temple on the banks of Chaopraya River in Bangkok is surrounded by floodwaters as Thailand experiences its worst flooding in half a century. Photo / AFP

Workers and volunteers piled sandbags outside buildings in central Bangkok and erected barriers in its subway to ward off possible weekend flooding as high water that devastated parts of central Thailand flowed toward the low-lying metropolis.

While the government sought to reassure Bangkok's nine million people that the capital would be spared, it also sent sometimes confusing messages that raised anxieties and sent residents on shopping sprees to stockpile food, medicine and other essentials.

The worst floods in a half century have submerged entire towns across Thailand's central plains, devastating rice crops and halting hundreds of factories.