The European Watershed is the line which divides the drainage basins of the major rivers of Germany; the Rhine river, which originates in the European Alps and empties into the North Sea via Holland, and the Danube River, which originates in the Black Forest and flows eastward emptying into the Black Sea. A watershed is a region of land where water drains downhill into a specified body of water, such as a river, lake, sea, ocean or wetland. ... For the term related to television programmes, see watershed (television). ... The Rhine canyon (Ruinaulta) in Graubünden in Switzerland Length 1. ... The West face of the Petit Dru above the Chamonix valley near the Mer de Glace. ... The North Sea is a sea of the Atlantic Ocean, located between the coasts of Norway and Denmark in the east, the coast of the British Isles in the west, and the German, Dutch, Belgian and French coasts in the south. ... Holland is a region in the central-western part of the Netherlands. ... Length 2,888 km Elevation of the source 1,078 m Average discharge 30 km before Passau: 580 m³/s Vienna: 1,900 m³/s Budapest: 2,350 m³/s just before Delta: 6,500 m³/s Area watershed 817,000 km² Origin Black Forest (Schwarzwald-Baar, Baden- Württemberg, Germany... A map of Germany, showing the Black Forest in red. ... Map of the Black Sea. ...

The European Watershead is not a clearly defined divide, however, since the Rhine's level is much lower than the Danube's, and subsurface rivers carry much water from the Danube watershed to the Rhine watershed. Since this enormous amount of underground water erodes much of its surrounding limestone, it is estimated that the Danube upper course will one day disappear entirely in favor of the Rhine, an event called "stream capturing". Limey shale overlaid by limestone. ...