AbstractAn agro climatic study was conducted at Tal. Ralegoan Dist. Yavatmal Vidharvha region of Maharashtra using database of 20 years (1998-2017) to assess the climatic water balance. The analysis of water balance components done on weekly basis. The average annual rainfall for Akola estimated as 796.44 mm. more than 30 mm rainfall 24 SMW to 38 SMW, more than 40 mm rainfall week during 28 SMW to 36 SMW and 50 mm rainfall occurrence in 29 SMW to 32 SMW. The highest PET was observed in 20 SMW weeks that is 54.11 mm and the lowest was observed in 1 SMW week i.e. 24.2 mm. The weekly total AET was recorded as 580.88 mm for period 1998 to 2017. The highest ATE was 28.4 mm during 30 SMW weeks and lowest was 0.05 mm during 21 SMW. The annual deficit determined as 1284.29 mm. SMI > 0.5 was found to occur during the period from 27 SMW to 40 SMW. The annual effective rainfall was found 577.42 mm during period of 1998 to 2017. The highest effective period of rainfall found in June to July month and weak at 22 to 42 SMW.
Under average rainfall condition, the period during which AET was greater than 25% of PET prevailed from 24 to 46 SMW, whereas the period during which AET more than 50% of PET existed during the period from 24 to 42 SMW