Modern governments take the same approach. The 1928 Flood Control Act, introduced to tame the Mississippi after the previous year’s devastating inundation, was at the time the largest public works project the US government had ever authorized, costing more than the Panama Canal. Flood management forms one of the biggest parts of China’s budget, with the 1 trillion yuan ($144 billion) invested in these projects in 2017 (the last time data was published), amounting to a larger sum than was spent on health care or railway construction.
As the largest irrigation system in the world, the Indus valley is another monument to massive investment whose roots date back more than 4,000 years. Like Pakistan whose backbone it forms, however, the Indus and its tributaries have been starved of the investment they need to effectively manage the risks of natural disaster.