Singapore has an advanced drainage system called the Stamford Detention Tank and the Marina Barrage, which manage both stormwater and provide flood protection.
Amsterdam's drainage system is notable for its use of canals and dikes, as well as its sophisticated pumping stations.
Tokyo's drainage system includes the famous Metropolitan Area Outer Underground Discharge Channel, which is one of the world's largest underground floodwater diversion facilities.
New Orleans has made significant investments in its drainage infrastructure, especially after Hurricane Katrina.
Copenhagen has been recognized for its climate adaptation strategies, including its drainage systems.
Rotterdam is known for its innovative water management solutions, including the use of water squares and underground water storage.
Hong Kong has invested in extensive drainage systems to cope with heavy rainfall and typhoons.