A storage reservoir on the Nysa Szalona river, 5 km north-west of the town of Jawor, situated in an area of farmland. It consists of two water-bodies joined by a narrow channel, the Gardziel. The larger water-body, Zbiornik Dolny, is adjacent to a dam near the village of S³up and has small patches of willow Salix scrub along its eastern and southern banks. The smaller one, Zbiornik Górny, is situated close to a backwater, near Stary Jawor, and has reedbeds Phragmites, islands and patches of Salix scrub. The whole area floods in spring, creating large expanses of shallow water and silt.
Breeding species of global conservation concern that do not meet IBA criteria: Crex crex (two pairs).
Pressure/threats to key biodiversity
Changes in water-level lower the breeding success of some species. Anglers disturb nesting birds, and unsustainable hunting occurs. The site lies in the buffer zone of Che³my Landscape Park.
National High International None500 ha of IBA covered by Landscape Park (Che³my, 28,461 ha).