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The water storage beneath the ground surface is the function of the Rainfall in an area. The underground water is the main source of irrigation and effect the agriculture production. So directly or indirectly the rainfall influences the agriculture. The years with the good rainfall enjoy the high agriculture production as the requirement of water is facilitated. The paper presents the rainfall pattern for last 25 years in study area with the analysis of variation of rainfall year by year. For the study, different techniques and tools are employed so the variation where it is seasonal or annual can be shown.