Vistula Lagoon Vistula Lagoon The Vistula Lagoon (; or "Kaliningradskiy Zaliv"; ; ) is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from Gdańsk Bay by the Vistula Spit. It is now known as the Vistula Bay or Vistula Gulf. The modern German name, "Frisches Haff", is derived from an earlier form, "Friesisches Haff". The lagoon is a mouth of a few branches of the Vistula River, notably the Nogat, and the Pregolya River. It is connected to
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