Detection of Drought Tendency Based on Precipitation in Southeastern Anatolian Project (GAP) Region, Turkey

In this study, drought tendency in southeastern anatolian project (gap) area was analyzed by using the mann-kendal (mk) and theil-sen slope estimator (tse) approaches. for this purpose, the data sets of the 3- and 12-month timescales, based on monthly rainfalls of rain gauging stations in the area, was considered in the study. there is a decreasing trend in the 53% of total number of months concerning with the data sets of the 3-month timescale for nine sites when the entire months of seven stations have a downward trend for the data sets related to the 12-month timescale. this shows that the tendency of drought increases at the longer periods of timescale. the direction and magnitude of trend in any station was detected with the tse method.