Vistula Lagoon Haff" = "Fresh Lagoon". Digging a canal to connect the lagoon with the Baltic Sea is in consideration as a major EU-supported project. The canal, would re-activate the Elbląg river port. It would also free its dependence on Russia, which time and again revokes the right of passage for Polish ships through the Strait of Baltiysk as a form of pressure on Polish authorities. In October 2016 details of the project were confirmed by PiS leader, Jarosław Kaczyński. The long, 80 metres wide and 5 metres deep canal shall be completed by 2020 at an estimated cost of PLN 880
Lagoon may become highly saline. Lagoons with no connection to the open ocean and significant inflow of fresh water, such as the Lake Worth Lagoon in Florida in the middle of the 19th century, may be entirely fresh. On the other hand, lagoons with many wide inlets, such as the Wadden Sea, have strong tidal currents and mixing. Coastal lagoons tend to accumulate sediments from inflowing rivers, from runoff from the shores of the lagoon, and from sediment carried into the lagoon through inlets by the tide. Large quantities of sediment may be occasionally be deposited in a lagoon when storm