Harran Plain is the largest plain within the area administered under the Southeastern Anatolia Project (known as the GAP project in Turkey), covering an area of 1500 km². This article presents results of groundwater quality assessment based on some pollution indicators such as electrical conductivity (EC) and nitrate (NO₃⁻) values in Harran Plain between 2005 and 2015. In order to show the change of EC and NO₃⁻ contamination in 20 observation wells located on the plain, seasonal average concentration distribution maps based on 2005 and 2015 were created. The results were then evaluated based on national and international standards and classifications. As a result; EC and NO₃⁻ values decreased throughout the plain from 2005 (max 8235 μS/cm, 720 mg/L) to 2015 (max 2510 μS/cm, 327 μS/cm). The observation wells where EC and NO₃⁻ values registered as high in 2005 were W8-Kisas, W11-Ugurlu, W14-Kizildoruc, W15-Yardımli, W16-Ozlu, and W20-Ugrakli, while in 2015, it was W11-Ugurlu and W14-Kizildoruc. The positive effects of the measures taken and improvements in the plain such as irrigation systems, correct fertilizer applications, closed drainage systems, and product pattern change have realized positive results with the reduced NO₃⁻ and EC levels. However, a different situation was observed for NO₃⁻ at the points where nitrate was low in 2005, with a comparatively slight increase recorded in 2015. The reason for this minimal increase was considered to be continued fertilizer application, applied fertilization method, and increased urbanization in addition to uncontrolled and over-irrigation.

哈兰平原是东南安纳托利亚项目（在土耳其被称为GAP项目）管理的区域内最大的平原，面积1500 km ²。本文介绍基于某些污染指标如电导率（EC）和硝酸地下水质量评估的结果（NO ₃ ^- ）值在哈兰平原2005和2015年之间为了显示EC和NO的变化₃ ^-污染在基于2005年和2015年的季节性平均浓度分布图上创建了20个观测井。然后根据国家和国际标准和分类对​​结果进行评估。结果是; EC和NO ₃ ^-从2005年（最大8235μS/ cm，720 mg / L）到2015年（最大2510μS/ cm，327μS/ cm），整个平原地区的土壤碳含量降低。其中EC和NO的观测井₃ ^-值登记为2005年高了W8-Kisas，W11-Ugurlu，W14-Kizildoruc，W15-雅迪米利，W16-厄兹吕，和W20-Ugrakli，而在2015年，它是W11-Ugurlu和W14-Kizildoruc。在平原诸如灌溉系统，正确的肥料的应用程序，关闭排水系统，及产品的图案变化已经意识到阳性结果与减少NO采取的措施和改进的积极效果₃ ^-和EC水平。然而，观察到NO _3-的情况不同^。 在2005年硝酸盐含量较低的时期，2015年的硝酸盐含量略有增加。这种最低限度的增长的原因被认为是持续施肥，施用施肥方法以及城市化程度增加，此外还有不受控制和过度灌溉的情况。