Zahir-ul Haque Khan is a leading River and Coastal Zone Management Specialist in Bangladesh. He has over 37 years of experience in river and coastal morphology, integrated coastal zone management and river dredging with experience in South Asia and East Asia. Zahir is currently Deputy Executive Director (Operation) Institute of Water Modelling (IWM), Director IWM Malaysia and previously led the Coast, Port and Estuary Management division of IWM as a Director for 18 years. He worked for the preparation of the Bangladesh Delta Plan 2100 and served as the focal point of the Integrated Coastal Zone Management program (ICZMP). Zahir has vast experience in the study of flow dynamics, waves, storm surges, river and coastal erosion, flood and drainage management, impact assessment of climate change and sea level rise, numerical, hydrological, hydrodynamic, and morphological modeling. He has led many detailed feasibility studies and prepared over 40 technical reports in the field of integrated water resources management and climate change. Zahir holds a BSc in Civil Engineering and M. Engg. in Water Resources Engineering from the Bangladesh University of Engineering and Technology (BUET).