Vistula Lagoon million. However, major ecological considerations stand in the way. For example, mammal migration along the lagoon could be disrupted. Also, the inflow of brackish waters from the Baltic sea could result in serious unbalancing of the lagoon's freshwater ecosystem. From 1772 until 1918, the lagoon was part of the Kingdom of Prussia, which had become part of the German Empire in 1871. Between 1920 and 1946 it was split between Germany and the Free City of Danzig. At present state since 1945 its eastern part belongs to Russia (formerly USSR), Poland has 43.8% of its area at lagoon's western side.
Glenrock Lagoon Glenrock Lagoon Glenrock Lagoon, an intermediate freshwater small coastal creek, is located within the Lake Macquarie local government area in the Newcastle and Hunter regions of New South Wales, Australia. The lake is located near the Newcastle suburbs of Adamstown and Dudley and is situated about north of Sydney. Drawing its catchment from Flaggy Creek within the Glenrock State Recreation Area and the Awabakal Nature Reserve, the small lagoon is quite shallow with an average depth of . It is connected with the Tasman Sea through a tidal channel. Glenrock Lagoon has a catchment area of and a surface area