There was nobody else except me near the lake when I photographed it, because of the dull and cloudy weather that evening. Usually there are lots of people swimming in the lake and tanning around its shores on sunny summertime days.
I swam there several times too, and I can say that the lake is rather dangerous. The water is very dark and dirty at a depth of one meter and below, though it is inconspicuous from the shore. So, if someone drowns, it’s hard to find and save drowning swimmers in the dark water.
Besides, there is a transmission line almost above the surface of the lake, you can see the pillars of the power line on the opposite shore. It is very unsafe to swim there.