Rainfall Erosion Index of Dehra Dun

Abstract

EI (Erosion Index) values are used for several purposes like estimating soill loss, accurate classification of rainstorm according to their soil eroding potential, accurate evaluation of erosivity of different soils, estimating cover and management effect. These values will be much useful when compiled for the entire country, Usually more than 20 years recording raingauge data is required but in the absence of such long period data; attempt is made to compute EI values for low frequency of 2 years and 5 years and as more years of data collected the estimated values may be extended. The EI values calculated for Dehra Dun are 244, 536 and 808 for 2, 5 and 10 years frequency.