Document Type : Original Article


1 Ministry of the Water Recourses, Baghdad, Iraq

2 Ministry of the Higher education and Scientific Research Department of Civil Engineering, College of Engineering, University of Babylon, Hillah, Iraq



This research aimed to estimate and analyse the water demand for the Muthanna and Thi-Qar provinces in Iraq's lower Euphrates River Basin. WEAP, CROPWAT model, and statistical forecasting methods were used to estimate agricultural, municipal, and industrial water demand. The results showed that the municipal demand for Muthanna reaches a maximum of 211.4 MCM in 2059 and a minimum of 98 MCM in 2022, while the demand for Thi-Qar is higher at 377.2 MCM and a minimum demand of 174.8 MCM in the same year. This difference is due to the larger population of Muthanna compared to Thi-Qar. The agricultural water demand for the two provinces also exhibits a significant difference, with Muthanna experiencing a maximum demand of 1579 MCM in 2059 and a minimum water demand of 1443.4 MCM in 2022, compared to a maximum water demand of 347.8 MCM and a minimum water demand of 317 MCM for Thi-Qar over the same period. This difference is due to the larger irrigated area in Muthanna compared to Thi-Qar. The findings from the comparison between the different methods suggest that demand can be accurately forecasted and planned in the future. The research highlights the need for effective water resource management in the face of the challenges posed by climate change, population growth, and industrialization in the lower reach of the Euphrates River.


AbdulHasan, M.J, and Marlia MH. 2017. Assessing water consumption of barley cultivation in thi-qar province Iraq. Journal Clean WAS . Vol 1, PP: 030-034.
Avarideh, F., Attari, J., and Moridi A. 2017. Modelling Equitable and Reasonable Water Sharing in Transboundary Rivers: The Case of Sirwan Diyala River. Water Resource Manage. Vol 31, PP: 1191–1207.
Allen, G., Pereira, S., and Raes D. 1998. FAO Irrigation and Drainage Paper No. 56/Crop Evapotranspiration (guidelines for computing crop water requirements).
Abdulhameed, IM., Sulaiman, SO., Ahmed, AB., and Al-Ansari N. 2022, Optimising water resources management by Using Water Evaluation and Planning (WEAP) in the West of Iraq. Journal of Water and Land Development. Vol 53, PP:176-186.
Al-janabi, A. 2018. Optimization Models for Iraq's Water Allocation System. (Doctoral dissertation, Arizona State University).
Boluwade, A. 2021. Impacts of climatic change and database information design on the water-energy-food nexus in water-scarce regions. Water-Energy Nexus. Vol 4, PP:054–068.
Gleick, PH., Iceland, C and Trivedi A. 2020. Ending Conflicts Over Water. Oakland, CA, and Washington, DC: Pacific Institute and World Resources Institute.
Haque, I, and Khan R. 2022. impact of climate change on food security in Saudi Arabia: a roadmap to agriculture-water sustainability. Journal of Agribusiness in Developing and Emerging Economies. Vol 12, PP:01-018.
IPCC, 2022. Intergovernmental Panel on Climate Change. The Physical Science Basis.
JICA, 2016. Data collection survey on Iraq's water resource management and agriculture irrigation. Final report, Japan International Cooperation Agency. NTC International Co., Ltd.
Klari, ZM. 2016. Water Management Model for Selected Area in the Greater Zab River Basin using (WEAP) Tool as a Case Study (Doctoral dissertation, University of Duhok).
KhazaiPoul1, A., Moridi, A., and Yazdi, J. 2019. Multi-Objective Optimization for Interactive Reservoir-Irrigation Planning Considering Environmental Issues by 21Using Parallel Processes Technique. Water Resources ManagementVol 33, PP:5137–5151.
Lar, M., Arunrat, N., Tint., S., and Pumijumnong N. 2018. Assessment of the Potential Climate Change on Rice Yield in Lower Ayeyarwady Delta of Myanmar Using EPIC Model. Environment and Natural Resources Journal. Vol 16, PP:045-057.
Max-Plank, G. 2016. Climate-exodus expected in the Middle East and North Africa,
Moseki, O., Murray, H.M., and Kashe K. 2019. Crop water and irrigation requirements of Jatropha curcas L. in semi-arid conditions of Botswana: applying the CROPWAT model. Agricultural Water Management. Vol 225.
Moriasi, N, Arnold G, and Van LW 2007, Model Evaluation Guidelines for Systematic Quantification of Accuracy in Watershed Simulations. American Society of Agricultural and Biological Engineers. Vol 50, PP:885−900.
NEMP, 2006, New Eden Master Plan for Integrated Water Resources Management in The Marshlands Area, Prepared in cooperation with Environment Water Resources Municipalities and Public Works, Main Report.
Naidu, C.R., and Giridhar MV. 2016. Irrigation Demand VS Supply-Remote Sensing and GIS Approach. Journal of Geoscience and Environment Protection. Vol 4, PP:043–049.
Noon, M., Ahmed, I., and Sulaiman O. 2021. Assessment of Water Demand in Al-Anbar Province. Iraq. Environment and Ecology Research. Vol 9: PP:064-075.
Nielsen, JW, Banner, JL, Cook, BI, Tremaine, DM, Wong, CI, Mace, RE, and Kloesel, K 2020, Unprecedented drought challenges for Texas water resources in a changing climate: what do researchers and stakeholders need to know? .Earth’s Future. Vol 9.
RIMP 2013, Republic of Iraq Ministry of Planning National Development Plan, Baghdad.
Sameer, SM, Mustafa, AS, and Al-Somaydaii, JA 2021, study of the sustainable water resources management at the upper Euphrates BasinIraq. International Journal of Design and Nature and Ecodynamics. Vol 16, PP:203–210.
United Nations, 2019. World Population Prospects. Volume I: Comprehensive Tables. Department of Economic and Social Affairs Population Division.
Voss, K.A., Famiglietti, J.S., Lo, M., De Linage, C., Rodell, M., and Swenson, SC. 2013. Groundwater depletion in the Middle East from GRACE with implications for transboundary water management in the Tigris‐Euphrates‐Western Iran region. Water Resources Research, Vol 49, PP:904-914.
Waha, K., Krummenauer, L., Adams, S., Aich, V., Baarsch, F., Coumou, D., and Schleussner, CF. 2017. Climate change impacts in the Middle East and Northern Africa (MENA) region and their implications for vulnerable population groups. Regional Environmental Change. Vol 17, PP:1623–1638.
World Bank 2018, Beyond Scarcity: Water Security in the Middle East and North Africa. MENA Development Report; Washington, DC: World Bank.