VARIATIONS OF RAINFALL PATTERN IN MANAS RIVER BASIN, ASSAM

Abstract

Hydrological and water quality models rely heavily on precipitation data since it affects the rate and magnitude of flow and mass transfer.Analysing the rainfall patterns of a watershed, river catchment, or drainage basin can help with water management and water efficiency. The potential of crop production, farming systems, and patterns of agricultural productivity can all be determined through an understanding of the nature and characteristics of rainfall,this is then used in reservoir planning, flood control engineering, drainage system design, soil and water conservation, and other similar fields of study and practice. Understanding the features of rain in relation to its temporal variation is crucial for long-term sustainability. The industrialization has altered global and regional climate, which in turn alters hydrologic conditions and the responses of runoff in watersheds. Given its significance to local economies, it's vital to study rainfall variability at the regional level. The rainfall trends of the Manas River basin have been outlined in this research.From 2005 through 2018; the yearly rainfall trend of the Manas river basin before, during, and after the monsoon has been studied.

Keywords: Manas River, Rainfall pattern, Seasonal variation, watershed, rainfall variability