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.
Buena Vista Lagoon Vista Lagoon as freshwater or to open it to the ocean, allowing saltwater mixing much as with the nearby Agua Hedionda Lagoon. As of early 2018, no definitive plans have been set to change the lagoon, however. Buena Vista Lagoon Buena Vista Lagoon is a freshwater lagoon adjacent to the Pacific Ocean in the South Coast region of Southern California within North County, San Diego County. The lagoon covers 223 acres of wetland habitat and serves as a geographic border between Carlsbad and Oceanside. Buena Vista Lagoon is managed by the California Department of Fish and Wildlife. The lagoon is