Agriculture is the largest consumer of the available water worldwide. Yet plant water consumption is hard to quantity and therefore hard to manage. eLEAF’s water management tools change that. Our algorithms quantify plant water use, be it for irrigated or rainfed crops, grassland or natural parks. This can be provided for single fields up to entire countries or basins. Per day, per week or per year. With our tools water managers will have improved insight into water need, allowing them to optimise the complex task of effective integrated water resources management.