Principal Hydrologist and Agriculture Water Management specialist at CEH. Expert in catchment hydrology, drought management, irrigation, drainage, soil hydrology, water use efficiency, use of poor quality water for crop production, urban hydrology, impact of land use and climate change on water resources. Has experience in working for both the universities and research centres. Leader of several projects in the UK and overseas. In addition to the UK, has extensive field experience and has carried out numerous projects in North Africa, Europe, the Middle East, the Mediterranean region and India. Developed two widely used models, SALTMED for field scale as a tool for integrated management of water, soils, crops and N- fertilizers and IHMS (Integrated Hydrological Modelling System) for catchment/basin scale. Recipient of several International Awards.