The Rhin is a river of Schleswig-Holstein, Germany; a right tributary of the Elbe formed by the confluence of the Herzhorner Rhin and the Kremper Rhin in Glückstadt. The Rhin drains a large part of the Krempe Marsh, and flows into the Glückstadt outer harbor via two locks and a pumping station, ultimately reaching the Elbe. The Rhine and its tributaries drain the m…The Rhin is a river of Schleswig-Holstein, Germany; a right tributary of the Elbe formed by the confluence of the Herzhorner Rhin and the Kremper Rhin in Glückstadt. The Rhin drains a large part of the Krempe Marsh, and flows into the Glückstadt outer harbor via two locks and a pumping station, ultimately reaching the Elbe. The Rhine and its tributaries drain the marshes and wet meadows to the west of the Krückau and Langenhalsener Wettern basins and to the east of the Stör. Its mouth is located below sea level, resulting in only being able to drain at low tide. Until 1951, its waters were passively discharged through two drainage sluices, which opened automatically when the Elbe level was lower than that of the Rhine. This system proved inadequate, as during heavy rain or storms, when the risk of flooding is higher, the Elbe level did not drop sufficiently in time to discharge a sufficient volume of water. The construction of a pumping station was inaugurated on September 29, 1951. This station protects an area of about 1,000 hectares from the risk of high water.