Workers rest near a canal as water is pumped out from it near Bangkok's Suvarnabhumi international airport October 20, 2011. The threat of serious flooding in Bangkok is growing because of the volume of water running down from the centre of Thailand, and one inner city area was under threat on Thursday after floodwater breached a waterworks canal, officials said. REUTERS/Chaiwat Subprasom (THAILAND - Tags: ENVIRONMENT TRANSPORT DISASTER)