Abstract:

Nowadays, drought is one of the most important factors that threaten water resources due to the decrease of precipitation. At the beginning of the studies to minimize the effects of drought, the sensitive determination of the duration, severity and recurrence period of the drought comes first. According to the results obtained in this study, while the precipitation amounts measured at Akşehir State Meteorology Station between 1959 and 2019 showed a decreasing trend, there was a statistically significant increase in temperature values. According to the drought analyzes performed at 1, 3, 6, 9, 12, 24 and 48 months time scales using the Standardized Precipitation Index (SPI), it was determined that the findings obtained were generally compatible with each other. In this context, it was determined that there was a statistically significant decrease in all other months except August, in other words, drought increased in the trend analysis of drought index values. According to the drought analyzes that represent hydrological drought in general, performed at 12, 24 and 48 month time scales with the Standardized Precipitation Index, it has been determined that there have been dry periods for long periods, especially in recent years, and this situation is compatible with the dramatic drying process of Akşehir Lake.