Vol. 11, Issue 12 (2022)

The rainfall erosivity is mainly influenced by the rainfall characteristics over 21 years, from 2001 to 2021. The present study examined 30 min maximum rainfall intensity, The average erosivity index calculated by EI₃₀ index method which is suggested by wischmeier & Smith (1978), the threshold rainfall intensity was analyzed for thirteen sets of rainfall events viz., Rainfall events of all intensities (I), I ≥ 4 mm/h, I ≥ 6 mm/h to Rainfall events of I ≥ 26 mm/h. The probability and recurrence interval of the annual and monthly one-day maximum rainfall and erosivity factor was calculated by using Weibull’s method. Average I₃₀ was found to be 15 mm/h. The average annual erosivity index for Solapur is 3563.79 MJmm/hah, which could be applicable for entire Solapur district. Threshold rainfall intensity was found 24 mm/h. The average erosivity index was found to be 2328.7 MJmm/hah using storms with intensity more than threshold value. The maximum one-day rainfall was found as 120.6 mm with 4.5% probability and 22-year return period, Maximum monthly rainfall was found as 319.8 mm with 4.5% probability and 22-year return period and the maximum annual rainfall erosivity index is observed as 6122.5 MJmm/hah with 4.5 per cent probability and 22-year return.