Vistula Lagoon arguments. This was the rationale for Latvian claims over the Curonian Spit, Memel, and other territories of East Prussia which would be later dropped. From January until March 1945 throughout the Evacuation of East Prussia, refugees from East Prussia crossed the frozen lagoon on their way to the west after the Red Army had reached the coast of the lagoon near Elbing on January 26. Attacked by Soviet fighter aircraft thousands of them were killed or broke through the ice. Vistula Lagoon The Vistula Lagoon (; or "Kaliningradskiy Zaliv"; ; ) is a brackish water lagoon on the Baltic Sea
Lagoon the material. Changes in the level of the lagoon water do not occur as a result of saltwater or tidal intrusion. Water in a hapua is predominately freshwater originating from the associated river. Hapua are non-estuarine, there is no tidal inflow however the tide does have an effect on the level of water in the lagoon. As the tide reaches its peak, the lagoon water has a much smaller amount of barrier to permeate through so the lagoon level rises. This is related to a physics theory known as hydraulic head. The lagoon level has a similar sinusoidal wave shape