Reclaimed land keeps returning to water
Filling in creeks, marshes and mangroves to make land removes the natural channels that once absorbed and drained monsoon water. When very heavy rain falls, the water goes back to its old paths, and the flooding is worst on the land that was built over. The July 2005 deluge, when roughly 944 mm of rain fell in a day and the choked Mithi river overflowed, shows the ecological debt of three centuries of reclamation coming due.