Lake Pešić is located in one of the largest cirques on Bjelasica, in the area between its highest tops: Crna Glava (2137 m a.s.l), Zekova Glava (2116 m a.s.l.) and Belil (2059 m a.s.l.).
Lake Pešić is 290 m wide, and its maximum width is around 165 m. If you decide to take a walk around the lake, have in mind that coast length is around 800 m in the summer, and 1200 m in the spring, because of higher level of water. Average depth of the lake is around 3 m, and it is considered that maximum depth is around 8 m.