Small reservoirs are an important part of small retention. Due to their small depth, they are generally rapidly shallowing. The reason for this process are very low flow velocities in the separate parts of the reservoir, which contribute to accelerate the sedimentation of suspended organic or inorganic load. In this study the water surface elevation during different discharges in the artificial lake in Pińczów under the present conditions, and after an additional outlet channel to the river are calculated. Speeds of water present in the reservoir in a number of areas are too small to measure them. Therefore, to determine the occurrence of no flow areas the CCHE2D, two dimensional model has been used. Revitalization scenario proposed for improving the oxygen capacity, and also to reduce the intensity of the deposition of the transported material into the reservoir is presented.

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