States that collect the most water are those where irrigated agriculture is very important. There are currently 280 million hectares irrigated worldwide, against 190 in 1980. Irrigated agriculture is responsible for 95% of freshwater withdrawals in some developing countries. Looking at the share of renewable resources withdrawn for agriculture, there are clear differences. In some areas, the resource is not mobilized, including where agricultural use is overwhelmingly dominant, either due to low population density or poor management of the resource. In others, the percentage of renewable resources used for agricultural purposes exceeds 40%. These regions are located on the axis of water stress, as saying that their margins of the resource mobilization are low to meet increased needs.