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 Ave (Adamstown) to Kahibah Station, Burwood Road (Kahibah) by 2004; Kahibah Station, Burwood Road (Kahibah) to Oakdale Road (Redhead) by 2009; and Oakdale Road (Redhead) to Belmont 2015. Glenrock Lagoon has been for over a century a recreational area for the people of Newcastle and Lake Macquarie. Glenrock State Conservation Area was declared a protected area in 1986. Within the catchment are the following suburbs – Adamstown Heights, Merewether Heights, Highfields, Kahibah, Charlestown, Whitebridge. However, Kahibah is the only suburb that is totally within the catchment area. Glenrock Lagoon Glenrock Lagoon, an intermediate freshwater small coastal creek, is located within