Hussein, M.J. and Hamid, D.K. 2023. Estimating the Level of Surface Runoff and the Risk of Flood in the Rizan Basin Valley. Journal of Tikrit University for Humanities. 30, 11, 1 (Nov. 2023), 74–96. DOI:https://doi.org/10.25130/jtuh.30.11.1.2023.05.