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Determining the change in the amount of evaporation is important for water resources management, design of water structures and preparing water action plans. In this study, trends of total monthly pan evaporation data for Gaziantep, Şanlıurfa and Mardin stations located as Southeastern Anatolia Region, which is important agricultural area of Turkey, are carried out using non-parametric Mann-Kendall (MK) and Innovative Trend Analysis (ITA) methods. The linear trend slope is determined with Sen's slope method. As a result of the study, the significant increasing trend is found with MK test in May and September at 95% confidence level and in October at 90% confidence level. The highest increase in this station according to the linear trend slope values is calculated 0.98%/year. As a result of analysis with ITA method, there is a trend occurrence in low, medium, and high values. It is concluded that ITA method can be used as an alternative method to monotonic trend analysis methods, since its ease of calculation and its ability to give results graphically. [ABSTRACT FROM AUTHOR]