The Ryck is a river in Mecklenburg-Vorpommern, Germany. From its source near , part of the Süderholz community northeast of Grimmen, the Ryck flows for about 28 kilometres (17 mi) to the east, reaching Greifswald shortly before its mouth. The larger part of the river outside Greifswald is also referred to as Ryckgraben. In Greifswald, the Ryck provided both the medieval Hanseatic port and natural salt evaporation ponds, as due to the low elevation, hypersaline water of the Baltic Sea is driven into the river by the wind, flooding the lower meadows on the Ryck's northern bank. * * * * * *