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.
Lake Worth Lagoon Lang's Inlet, which was deepened to in 1925. In 1917 the South Lake Worth Inlet was created in a failed effort to improve tidal circulation and provide flushing to the south end of the Lagoon. The completion of the West Palm Beach Canal (which connected to Lake Okeechobee, draining land west of West Palm Beach as well as the Everglades) in 1925 resulted in significant freshwater inflow to the lagoon. Lake Worth Lagoon is completely surrounded by the urbanized area of Palm Beach County. Much of the shoreline has been dredged and filled-in. Bulkheads now line 81 percent of the