During the first years of reservoir
filling (1986-1990) it was observed
that the trend of daily inflow to the
regulating reservoir is increasing which
coincide with the daily water level
trend as shown in Figure (5 and 6).This
increasing gave an indication that the
capacity of the hydroelectric
generation of the pump storage scheme
have increased too, while during the
second period considered in this study
(1994-2007) the inflow trend of the
reservoir is decreasing coinciding with
the water level trend