Watershed delineation and groundwater resources assessment are the most important steps in integrated water resources management planning and sustainability. Long-term water resource planning requires spatial and temporal information on groundwater level, recharge and discharge rates. Over the last few years several researchers tried to delineate Marsaba-Feshcha catchment boundary conditions based on 2-D and 3-D conceptual and mathematical models. Limited success was achieved in delineating Marsaba-Feshach basin boundary, due to hydrogeological, geological and hydropolitical complexity. Up to...