In recent years, the rapid growth of economics and development of the city has changed the city a lot in China, more and more overpass and tunnel, as well as underground parking lot have been built. Besides, the global climate change has caused lots of unusual bad weather, including heavy rainfall, typhoon, hurricane, etc., so urban waterlogging disasters have become a big threat to the city.
So the city management department has paid attention to build a flood prevention and alarm system to reduce the loss of human life and belongings.
