Dam on the Vistula in Goczałkowice-Zdrój

Goczałkowickie Lake (Goczałkowicki Reservoir) - a dam reservoir on the Vistula, created in 1956 by damming river waters with the dam in Goczałkowice-Zdrój in the Silesian Voivodeship. The maximum area of the reservoir is 3200 ha, and the total capacity is about 168 million m³. The dam is 2,980 m long. It is a retention reservoir supplying water to a part of the Upper Silesian Industrial District, providing 38% of treated surface water for Górnośląskie Przedsiębiorstwo Wodociągów S.A. in Katowice.
In addition to water supply, it also performs retention and economic functions (fisheries).
The vicinity of the reservoir is a breeding ground for many bird species. The area of the reservoir is in the prohibition zone, with no entry to its area. The dam crown has been made available for pedestrians and cyclists, creating a "walking part" connecting Goczałkowice-Zdrój with Zabrzeg, thanks to which the area of the Goczałkowice reservoir has become a recreational place.
pl.wikipedia.org/wiki/Jezioro_Gocza%C5%82kowickie