The study areas of Wadis Qilt (Palestine) and Al Arab (Jordan) belong to the multilateral SMART-project in the Lower Jordan Valley. The strategy of SMART is to upscale knowledge, extracted from local catchment areas to the project scale. The aim of the sub-project is to evaluate natural resources on catchment scale by combining hydrochemical and hydraulical methods to develop a high precision model. Concerning the quantification of the system, two separated models will be linked: a numerical finite element flow-model for the groundwater passage and a new developed hydrological model JAMS.