The species composition of zooplankton of ten pit lakes was studied in summer months in 2004 and 2006. The numerous pit lakes in the Borská nížina lowland are the result of gravel and sand extraction that took place in later half of 20^th century. In total 45 taxa of rotifers, 31 branchiopods and 18 copepods were identified. There were some differences in zooplankton species composition and community structure in study gravel pits. The main reason of species diversity is different macrophytes development and different fish management in all gravel pits. The dominance of rotifers and small–bodied species: Bosmina longirostris O. F. Müller, 1785 , Ceriodaphnia pulchella Sars, 1862 and Thermocyclops oithonoides Sars, 1863 documented the fish predation in gravel pits with fish management. The higher species richness and phytophilous assemblages: Platyas patulus Müller, 1782 , Euchalnis dilatata Ehrenberg, 1832, Alona rectangula Sars, 1862, A. guttata Sars, 1862 , Acroperus harpae (Baird, 1834) , Pleuroxus aduncus (Jurine, 1820) and P. denticulatus Birge, 1879, were dominated in waters covered with macrovegetation.