TREND ANALYSIS OF RIVER FLOW IN LANGAT RIVER BASIN USING SWAT MODEL

The increase in population and the human activities this basin area has led to many water shortage problems. This research was carried out investigate impacts of land-use changes urbanization on discharge Langat River Basin using ArcGIS. It applied Soil Water Assessment Tool (SWAT). aimed identify how critical increment could impact discharge. rainfall, humidity, solar, wind speed data from 2010 – 2016 were used for modelling purposes. results obtained calibrated satisfactory, with value coefficient determination 0.63 Nash-Sutcliffe Efficiency (NSE) 0.69. precipitation river flow pattern observed shows decreasing May September increased November December 2016. can be that decreased due some factors, may a concerning issue as is supply people Klang Valley. paper proven GIS technology Arc SWAT model simulate streamflow further demonstrated other basins. also analysis future.