Drought analysis for the Southeastern Anatolia region

Today, the issue of minimizing the negative effects of drought has become very important within the scope of planning, development and management of water resources that are adversely affected by climate change. In this study, the drought situation for the Southeastern Anatolia Region was supported by the literature, and drought risk analyzes were made for a total of 18 stations using meteorological and hydrogeological data for the relevant region. First of all, missing data were completed with regional analyzes. Standardized Precipitation Index (SPI) and Reconnaissance Drought Index (RDI) were defined. Drought severity and magnitude were found according to these indices. Drought analysis was made and according to these methods, the drought class of the regions belonging to the stations where precipitation and temperature data were obtained was determined. All SPI and RDI values were analyzed, the lowest and highest values were found and the driest and wettest months were determined. Afterwards, trend analyzes were carried out with the Innovative Sen Method in the 95% confidence interval of the annual total precipitation and annual average temperature data on behalf of the relevant regions. In the precipitation trend analysis, it was determined that there was an increasing trend in 4 stations, no trend in 1 station and a decreasing trend in 13 stations. In the temperature trend analysis, it was observed that there was an increasing trend in all 18 stations.