IWM is governed by a Board of Trustees with top level representatives from national authorities and organisations : Ministry of Water Resources; Ministry of Planning; Ministry of Finance; Bangladesh Water Development Board (BWDB); Water Resources Planning Organisation (WARPO); Bangladesh University of Engineering and Technology (BUET); Roads and Highways Department, Local Government Engineering Department, NGO, Institute of Engineers Bangladesh, Private Commercial Bank; DHI Water & Environment and IWM itself.
The daily management is the responsibility of the Executive Director, assisted by Deputy Executive Directors and division heads. IWM has divisions for Water Resources Planning, Irrigation Management, Flood Management, River Engineering, Coastal, Port & Estuary Management and Survey & Data.
The technical basis for IWM's operation is the qualification of its staff members, theoretical skills as well as practical experience ;a set of advanced tools for field investigations and studies, such as survey instruments, numerical hydraulic models, and computer facilities; and its corporate experience, developed during related projects in the past, and comprising data, established models, and other knowledge that can facilitate a highly qualified and efficient production of services.
The financial basis for IWM's operations is earnings generated by its consultancy activities. The net earnings are used for financial consolidation and for funding or co-funding of research and development programmes and staff training programmes.