
TOTAL VIEWS: 378
Large reservoirs built along the Euphrates River for hydropower and irrigation have significantly changed regional hydrology, evaporation patterns, and water quality, leading to downstream effects on nearby agricultural soils. This structured review summarizes evidence published between 2000 and 2025 on reservoir-related soil salinization, sodification, and waterlogging in Türkiye, Syria, and Iraq. Three main mechanisms appear repeatedly in the literature: groundwater table rise in irrigated areas, evaporation-driven concentration of reservoir water, and salt recirculation through irrigation return flows with poor drainage. Most evidence is from the Harran Plain in Türkiye, the reservoir edges of Lake Assad in Syria, and downstream sections of the Euphrates in Iraq. Management recommendations focus on drainage-driven planning, crop zones sensitive to salinity, and integrated soil-groundwater monitoring. Major research gaps include scarce long-term paired soil-groundwater data near reservoir edges and difficulties in separating reservoir impacts from climate variability and farming practices.
Euphrates; reservoirs; salinization; sodification; waterlogging; irrigation return flow; Lake Assad; Harran Plain; Haditha Dam
[1] UN-ESCWA & BGR. Inventory of shared water resources in Western Asia: Euphrates River Basin. United Nations; 2013.
https://www.unescwa.org/publications/inventory-shared-water-resources-western-asia
[2] Kattan Z. Estimation of evaporation and irrigation return flow in arid areas using stable isotopes (Euphrates, Syria). J Arid Environ. 2008.
https://doi.org/10.1016/j.jaridenv.2007.10.011
[3] Majar A, Daoud M, Barakat H, Ozon M, Fatoum M. The effect of Al-Assad Reservoir on the change of soils chemical properties in Al-Kreen Reservation in the semi-arid climate zone. 10th Conference of GCSAR; 2014 Apr 27-28; Damascus.
https://www.researchgate.net/publication/323264611
[4] Akça S, Gungor O. Semantic segmentation of soil salinity using in-situ EC measurements and a deep learning-based U-NET architecture. Science Direct Vol 218. Catena. 2022.
https://doi.org/10.1016/j.catena.2022.106529
[5] Bahçeci İ. Impacts of Different Drainage Managements on Water Saving, Salt Balance and Nutrients Losses in the Harran Plain, South East Turkey. Soil Study. Vol %, number 1.
https://www.soilstudies.org/uploads/pdf_178.pdf
[6] Rahi K, Halihan T. Changes in the salinity of the Euphrates River system in Iraq. Reg. Environ. Change. 2010;10(1):27-35.
DOI: 10.1007/s10113-009-0083-y.
[7] Jalal AD, Al Ani Y, Thameel SS, Ismael ZM. Study of the Euphrates River’s Water Quality in Front of and Behind the Haditha Dam in Anbar Province, Iraq. IOP Conf. Ser.: Earth Environ. Sci. 2023;1222 012042.
https://iopscience.iop.org/article/10.1088/1755-1315/1222/1/012042
[8] Alhamd ADS, Ibrahim MA. Unveiling soil and groundwater salinity dynamics and its impact on date palm yield in Southern Basrah, Iraq. DySONA Appl Sci. 2024.
https://dysona.org/index.php/appliedscience/article/view/104
[9] Singh A. Alternative management options for irrigation-induced salinization and waterlogging under different climatic conditions. Ecol. Indic. 2018;90.
https://doi.org/10.1016/j.ecolind.2018.03.014
[10] NASA Earth Observatory. Freshwater stores shrank in the Tigris–Euphrates Basin (GRACE). 2013.
https://science.nasa.gov/earth/earth-observatory/freshwater-stores-shrank-in-tigris-euphrates-basin-80613/
[11] Shapland G. Water Security in Iraq. London School of Economics; 2023.
https://eprints.lse.ac.uk/119442/1/230501_WATER_SEC_IN_IRAQ_REPORT_non_sensitive_version.pdf
[12] UN ESCWA. Inventory of shared water resources in Western Asia. Euphrates River Basin chapter. 2013.
hhttps://waterinventory.org/sites/waterinventory.org/files/chapters/Chapter-01-Euphrates-River-Basin-web.pdf
[13] Voss KA, Famiglietti JS, Lo M, et al. Groundwater depletion in the Middle East from GRACE with implications for transboundary water management in the Tigris-Euphrates-Western Iran region. 2013. DOI: 10.1002/wrcr.20078.
Reservoirs on the Euphrates and Their Effects on Adjacent Soils: A Review of Mechanisms, Evidence, and Management
How to cite this paper: Ahmad Majar. (2025) Reservoirs on the Euphrates and Their Effects on Adjacent Soils: A Review of Mechanisms, Evidence, and Management. International Journal of Food Science and Agriculture, 9(4), 331-337.
DOI: http://dx.doi.org/10.26855/ijfsa.2025.12.009