EN
The content of Zn, Cd, Pb, Ni, Mn and Fe in bottom sediments of water reservoirs in Cracow has been investigated. Concentrations of heavy metals appeared to be more related to reservoir type and age than location. The most polluted sediments occur in river meanders cut in present time as well as in reservoirs affected by waste disposal. Reservoirs located in open pits are not polluted. However, reservoirs without inflow and outflow are the most sensitive to the accumulation of toxic metals. These reservoirs seem to be the most suitable for recreation.