(TRIAL, NOT FINAL )

Most cities have a good drainage system so excess rainwater can flow away faster. This is needed because most areas in the cities are paved, which causes enormous amounts of rainwater during heavy rains. Water cannot be absorbed into the ground. Therefore, the natural transfer of water is important during heavy rainfall. The ground stores some of the water, so the peak of rainwater that needs to be transferred by the drainage system will be lower. This can prevent flooding. Meanwhile, allowing rainwater to transfer into the ground also can fill the groundwater reserves that are important for cities in dryer periods. So, creating opportunities for the water to naturally transfer from the surface to the groundwater reserves results in more resilient cities due to two reasons. First, it lowers the peak of water that needs to be transferred by the drainage system during heavy rainfalls. This can prevent flooding. Second, by allowing the water to transfer into the ground, groundwater reserves can be filled. This water can be used in dryer periods.