Yemen is a country with many cultural and social diversity. The main challenge on water management is the exponantial use of ground water. Over the past decades the irrigation of the agricultural area has grown exponantial, and the amount of water used for irrigation is fourtheen times more than the available ground water. Two third of agriculture contains the growth of qat. The output of cultavating this plant is five times more than the output of cultivating other plants. However, the increasing wealth due to cultivation of qat is not sustainable because 40 percent of the available water is used for growing qat. Meanwhile, the shortage of water becomes more and more visible: water reservoirs become empty and in some regions agriculture is no longer an option because of water shortage. In addition, the population is growing. This makes the shortage of water a pressing issue.

Yemen and the Netherlands collaborate on water management as a part of the Dutch Water OS programme. This programme focuses on business relationships with developing countries. For Yemen the most important issue is smart use of available water. Therefore, insights in water use including remote sensing and modelling are usefull. A first step in the collaboration was the request of the Dutch ambassy in Yemen to organize a Dutch mission to assist Yemens national water authority to provide a plan for the Sana'a area in Yemen.