Appu lives in an area where there is heavy rainfall. To prevent flooding of his village, the village has a parallel drainage system that collects rain water along with another drainage system that collects sewage. What is the drainage system that collects rainwater called?
Storm water drain
Storm water drains collect rainwater from roads and pavements. These may be then connected to a local water body or to the sewage drain. Cities which are prone to floods should have a proper storm water drain network.