Rain Garden Collaborating with Sherwood Design Engineers, site drainage was integrated early into the architecture and landscape design. Seasonal rains are managed onsite through multiple rain gardens which collect and control storm water runoff from the roof, decks, and pool terrace. This system decreases on site erosion and possible flooding to the city’s drainage downstream from the project site.
Overflow water caused by a heavy rain flows into a water tank at the Metropolitan Area Outer Underground Discharge Channel in Kusakabe, north of Tokyo. (Photo credit: REUTERS / Ministry of Land, Infrastructure, Transport and Tourism - Edogawa River Office)