Hassan Abed, F. and Al–Khafaji, S.N. 2021. Rainfall and ways of managing and investing: A study in the development of water resources in Muthanna Governorate (Badia Al Samawah). Al-Adab Journal. 3, 137 (Jun. 2021), 417–442. DOI:https://doi.org/10.31973/aj.v3i137.1403.