Szczecin Lagoon Szczecin Lagoon Szczecin Lagoon, Stettin Lagoon, Bay of Szczecin, or Stettin Bay (, ), also Oder lagoon (), is a lagoon in the Oder estuary, shared by Germany and Poland. It is separated from the Pomeranian Bay of the Baltic Sea by the islands of Usedom and Wolin. The lagoon is subdivided into the "Kleines Haff" (, "small lagoon") in the West and the "Wielki Zalew" (, "great lagoon") in the East. An ambiguous historical German name was "Frisches Haff", which later exclusively referred to the Vistula Lagoon. From the South, the lagoon is fed by several arms of the
Freshwater Lagoon following subsidence events. The relatively small catchment basin tributary to Freshwater Lagoon has allowed formation of a durable coastal sand bar which has not been breached by recent storm events. Precipitation usually percolates through the bar without forming a surface channel. U.S. Route 101 traverses the coastal sand bar between Freshwater Lagoon and the Pacific Ocean. Convenient parking on the sand bar adjacent to the highway has made the lagoon a popular scenic rest area for motorists in Humboldt Lagoons State Park. There is also a Redwood National and State Parks visitor center near the north end of the lagoon.