According to experts, the cause of the rain is flooding due to climate change, which causes the rainfall to fluctuate erratically with increasing frequency and intensity of rain, while the existing infrastructure has not been designed yet. The planning, construction and installation of the drainage system is not synchronized, causing the drainage of water when it rains abnormally.

In addition, the situation of people littering indiscriminately leading to blockage of drainage pipes is also the cause of flooding every time it rains heavily in urban areas.

The foundation to ensure effective flood control is a management system that monitors, and adjusts investment programs in a timely manner. This will contribute to support, management and adaptation between drainage realities, surface cover, urban subsidence or sudden discharge demand.