Governmental Agencies

• River Bureau, MLITT
• Geographical Survey Institute
• Japan Meteorological Agencys

Research Institutes and Universities

• Public Works Research Institute
• Building Research Institute
• Port and Harbour Research Institute
• Meteorological Research Institute
• Disaster Prevention Research Institute, Kyoto University

Projects

• CommonMP Project
• OHyMoS
• National Land with Water Information Data Management Center

Public Corporations

• Foundation of River and Basin Integrated Communications
• Japan Institute of Construction Engineering
• Foundation for Riverfront Improvement and Restoration
• Foundation of River and Watershed Environment Management
• Japan Dam Engineering Center
• Public Works Research Center
• Japan Weather Association

Academic Societies

• Japan Society of Civil Engineers
• Japan Society of Hydrology and Water Resources
• Information Processing Society of Japan

Overseas

• American Sciety of Civil Engneers
• Hydrologic Engineering Center, US Army Corps of Engineers
• U.S. Geological Survey
• Korea Water Resources Corpration
• Delft University of Technology
• OpenMI Association