The study aimed to see how different water table depths affect water use in sesame crops and to test a model's accuracy in predicting evapotranspiration. They used Lysimeters to measure groundwater contribution and monitored crop growth conditions. Results showed that sesame crops used about 450 mm of water, with 40% coming from groundwater. The crop coefficient values were higher due to good canopy cover. Water use efficiency was 21 kg/m3. The model accurately predicted evapotranspiration and irrigation needs, making it a useful tool for managing water and salinity issues in crops.