A reservoir which replaced the former Straldza marsh, surrounded by meadows and arable land. It does not freeze in winter. Typha is predominant along the banks. Wet meadows are dominated by Carex, Poa and Lolium. There are lines of Populus and Robinia trees. Land-uses include hunting, fish-farming and haymaking.
Important for waterbirds in winter, especially Anser albifrons, the globally threatened Branta ruficollis, and Phalacrocorax carbo.
Pressure/threats to key biodiversity
Illegal and uncontrolled hunting of waterbirds poses a serious threat.