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The Mn content in interstitial water, in that in the layer near the bottom and in the sediment was determined. The concentrations of Mn varied in a wide range both in the annual cycle and in the course of the investigated 4-year period. It was established that manganese content considerably exceeded the permissible environmental level in the whole reservoir and increased distinctly near the dam.
The most intensive displacement of Pb and Cd in the Goczałkowice Reservoir occurred from water near the bottom to the bottom sediment and to the interstitial water as well as from the interstitial water to the bottom sediment and to water near the bottom. The time of removing Pb and Cd from water near the bottom to the interstitial water was on average 21 days for Pb and 2.75 days for Cd, but from...
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