The Huang He (or Yellow River) in China is the river with the highest amount of sediment worldwide. Over time, fortified settlements and industrial facilities have been built on sediment that had been deposited in the river delta. In the middle of the nineteenth century, dams and levees were set up in order to protect the new infrastructure against floods. Since the 1970s, the river levels in the delta have been falling continually due to the increased demand for water. These two satellite images give you an idea of the modifications the delta underwent within twenty years.