The Mangla reservoir was built for irrigation as well as power generation. The variability in climatic variables (temperature and precipitation) at spatial and temporal scales affects the streamflows. To consider the hydro-climatic unpredictability, 50 years (1961-2010) record was scrutinized. The time series were divided in two periods of 25 years each (1961-1985, 1 and 19862010, 2). Results o...