ESTIMATION OF MONTHLY RUNOFF FROM SMALL CATCHMENTS IN INDIA

Data from 31 non-snowfed catchments in India having catchment areas le ss than 1515 km(2) have been analysed to develop a simple method for t he estimation of monthly runoff for the monsoon months of June to Octo ber. One of the parameters of this method was found to vary with the c atchment area, the percentage of forest cover in the catchment and the monthly average temperature. The value of another parameter of the pr oposed method was found to be constant during any one month in a hydro logically homogeneous region. The method proposed herein is useful for estimating the monthly runoff during the monsoon period from catchmen ts having scarce data.