Borówno Lake

In the forest adjacent to the north, there is the Augustowo nature reserve [pl], protecting a peatland, alder carr, and a habitat of swamp willow.

[2] The lake basin has a regular shape sloping towards the center, with one central depression measuring 14 m in depth.

[4] The lake is fed by small, intermittent watercourses and essentially constitutes a closed basin, strongly reacting (along with the neighboring reservoirs of Kusowo and Dobrcz) to changes in rainfall conditions.

Therefore, in 1978, an artificial drainage system was built for the lake, which, through a pumping station, can divert excess water to the Augustowski stream.

[3] The direct drainage basin of the lake is characterized by numerous recreational buildings in the form of a complex of 350 allotment gardens, which constitute a significant source of anthropogenic pressure.

[3] Unfavorable features of the lake's drainage basin include land use dominated by agriculture and a low elongation index value, indicating weak dilution capacity of pollutants from outside sources.

Against this background, the trophic indicators of the lake were favorable, such as water transparency (about 2.5 m, and over 3 m in summer) and chlorophyll content.

[3] A study conducted in 2009 by the Provincial Inspectorate of Environmental Protection in Bydgoszcz showed good water quality in the reservoir.

On the eastern side of the reservoir, there are recreational plots, while on the western, wooded shore, there are two beaches (one guarded), along with piers, playgrounds, and a water sports equipment rental.