According to His Majesty, there are plenty of natural waterways and low-lying areas in Bangkok for storing and releasing floodwater, but the number has been much reduced because of relentless construction of new buildings, which block the flow of rainwater. Therefore, there is an urgent need to build “kaem ling” in order to store floodwater and ease the flooding of residential and commercial areas. Once the floods recede, the water stored would be released. In some cases, the storage areas could also be used for waste water treatment and the treated water would then be generated for public use.