Along the eastern shore of the lake, there are elevations, with the highest, Góra Wysoka, rising to 101 meters above sea level.

[10] According to the Map of the Hydrographic Division of Poland [pl], the lake is located in the drainage basin of the tenth level.

[4] On the eastern shore of the water body near Góra Wysoka, one of three identical observation towers built by the Gmina Pszczew is located.

Environmental inspectors from the Regional Inspectorate for Environmental Protection pointed out that the construction of a sewage treatment plant for Pszczew in 1996, along with the discharge of treated sewage directly into the Obra river, outside the lake's catchment area, contributed to maintaining water quality.

The closure of the distillery in Pszczew, which was discharging sewage directly into the lake, also had a positive impact on water cleanliness.

Factors negatively affecting this indicator include a low level of thermal stratification and the shoreline-to-volume ratio.

[4] Research conducted in 2020 classified the waters of the lake as having a good ecological status, corresponding to Class II quality.

The classification was based on the ecological status of macrophytes, ichthyofauna, and benthic invertebrates, while phytoplankton and phytobenthos were assessed as very good.

However, the chemical state of the waters was determined to be below good, with exceeding permissible concentrations of PBDE, mercury, and heptachlor in fish tissues.