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• Drought as a natural disaster, as a result of climate change, affects communities through changes in access to water resources. • The occurrence of this cost phenomenon Heavily imposed on the economy and society and the environment, all the advances made in scientific and technical fields have not yet been able to make the most effective time and place. • Historical data can be estimated by relying on the information available on the current period of the various regions and by establishing drought preparedness plans, the problems of one of the most comprehensive definitions for drought are Palmer's definition. The drought is characterized by a lack of continuous and abnormal moisture. In this definition, the term continuous refers to the continuation of the abnormality of the abnormal word to the deviation of the index from the natural or the average. What is important in this context is to understand the idea and the right solution for the proper prediction of the phenomenon of drought in order to minimize its adverse effects on nature and the environment. Such systems are designed and presented with drought indicators. Standardized rainfall index (SPI index) (due to the simplicity of computing, the use of