Location: Suminoe-ku, Osaka
Discharge capacity: 73 m3/s
Number of units: 6
Type: Model-VLYGE 2200-mm diameter vertical mixed flow pump
As the city of Osaka grew, there were fewer fields, lakes and wetlands to retain rainwater. Whenever there was local heavy rainfall, rainwater exceeding the capacity of low-lying areas to handle it would concentrate in low-lying land, even in areas that had established sewerage systems, causing damaging floods. Urban flooding had become a serious problem in the south-eastern part of the city, prompting the construction of the Naniwa Grand Floodway. Suminoe Pump Station was built for the purpose of draining water collected in this floodway (total length of 12.2 km, maximum inside diameter of 6.5 m) into the Sumiyoshi River.