Disaster-Prevention and Conservation

- Kotogawa Dam (2008)

- Pipe Line, Rainwater Storage Facility, Osaka International Airport (2008)

- Ishikawauchi Dam (2007)

- Takou Dam (2007)

- Integrated River Development Project, Nakanoho Dam (2006)

- Koda Dam (2005)

- Imai River Underground Retarding Basin Construction Project (2003)

- Otsu Flood Control Channel (2004)

- Nakasujigawa Dam (1996)

- Pirika Dam (1992)