Drainage Water Application for Irrigation purposes: Case-Study, HAJI-ALI drain, Babylon Al-Qaisi Atheer Z.1, Al-Murshady Kareem R.2, Raheem Shahad A.1, Ali Zena H.2 1College of Water Resources Engineering, Al-Qasim Green University, Babylon, Iraq 2Al-Mussaib Technical College, Al-Furat Al-Awsat Technical University, Babylon, Iraq Online published on 16 April, 2022. Abstract The problem of scarcity of water supply is one of the most important problems currently facing Iraq, and because of the future deficit of Tigris and Euphrates rivers, it is necessary to consider other sources of water. This study aim to evaluate the quality of Haji-Ali drain water and its suitability for irrigation purposes after diluting it with Euphrates river water. Diluted water samples are subjected to the following analyses: PH, SOLUBLE cations and anions for different depths. The values of EC and SAR were increased with the increase of depth of root zone (avg. EC=7.34) and (avg. SAR=6.75) and after the comparison with the limits of FAO values, these values were acceptable for irrigation. The terms of the toxic effect with respected to CL with the concentration ranged (11 – 30) mg/L, and there for its suitable for irrigation. The use of diluted water increased the production level of the barley crop by 15% comparison with the neighboring areas of farmers in the region and its accepted for irrigating most tolerance field crops, however sensitive plants should be excluded. Top Keywords Irrigation water shortage, Drainage water reuse, Irrigation water quality, Drainage water, Drainage water quality, Haji-Ali Drain. Top |