Qadir, B.H. and Mohammed, M.A. 2022. Comparison between SARIMA and SARIMAX time series Models with application on Groundwater in Sulaymaniyah. The Scientific Journal of Cihan University– Sulaimaniya. 5, 2 (Apr. 2022), 30-48. DOI:https://doi.org/10.25098/5.2.17.