Figure 3

The WEs of Tarbela and Mangla reservoirs at (a) monthly and (b) seasonal scale during 1981–2017. (a) Monthly WEs show less variable curve representing the water storage in Tarbela as compared to Mangla during 1981–2017. This is mainly attributed to hydro-meteorological regimes in the respective basins. Driest/Wettest months recorded are May, 2010/ Sep, 2005 and Apr, 2000/ Sep, 2014 for Tarbela and Mangla, respectively. (b) The MET and AGR seasons also showed distinct WE behavior for both reservoirs.