The Hirano River Flood Control Reservoir is a tunnel (approximately
10 meters in diameter) running under arterial highways and designed to
temporarily hold water as a way of mitigating the risk of flood damage
affecting the southeastern region of Osaka City. This project
began in 1981 and progressed to the point where the tunnel can
hold approximately 360,000 cubic meters of rainwater. This project is
expected to form an underground river extending all the way
to the Kizu River.
Construction which will add the second inflow facility began
in 2001 and finished in 2005 for the more effective river
improvement. |
