The present study intended to determine potential trends in monthly, seasonal and annual rainfall in the Brahmaputra valley of Assam during 1986-2015, based on observed daily rainfall data from 10 locations. The magnitude of the trends was estimated using TheilSen’s slope method, while statistical significance of the trends was tested using MannKendall rank statistics. Analysis revealed that mean annual rainfall varied from mm in Golaghat to mm in Gossaigaon, with variability in order of 13-32 per cent at different locations. | Variability and trends of rainfall events in the Brahmaputra valley of Assam India
