Like Lae and other parts of the highlands region, the city of Yokohama, located south of Tokyo in the Kanagawa area, experiences a lot of rainfallĀ and had drainage problems. However, that was addressed through multi-purpose reservoir storage areas.
Port Moresby does not have a river flowing in the city, but the roads turn into fast flowing rivers whenever it rains.
In Japan, the Tsurumi River runs through Toyko and has a river basin of 235 square kilometres that extends to Kanagawa and Yokohama city.