Dr. Ranvir Singh is an Associate Professor in Environmental Hydrology and Soil Science, and a Doctoral Supervisor at the School of Agriculture and Environment, Massey University, Palmerston North, New Zealand. He specializes in research and integration of field observations, geographical information and hydrological models to study water use, irrigation and drainage systems, attenuation of nutrient runoff and leaching from agricultural soils, and surface water and groundwater hydrology in rural and peri-urban landscapes. Key focuses of his research are on (a) advancing water quality science by mapping and modelling of critical nutrients and sediments flow pathways, spatially-variable nitrate attenuation (reduction) in shallow groundwaters, and development of novel edge-of-field technologies (such as controlled drainage, woodchip bioreactors, and sediment traps) to reduce runoff on nutrients from agricultural lands to receiving waters, and (b) advancing water productivity and footprinting sciences by developing new observations, methods, and models for both local and global contexts. He has served as a member of ‘Grey Water Footprint Expert Panel 2012’, the Water Footprint Network (The Netherlands and FAO Livestock Environmental Assessment and Performance Partnership (LEAP) Water Technical Advisory Group (TAG) (2016-2018).