The Rhine and some of its tributaries such as Main, Nahe and Neckar are particularly in Germany viticulture an eminent importance. Because on the sometimes steep slopes of these rivers, a large part of the German vineyards in 10 (of 13) directly adjacent or nearby German cultivation areas. The importance of the river also highlights the fact that the most important German grape variety Riesling often called Rheinriesling. The Rhine practices like everyone else waters a positive effect on viticulture from or creates the basis for the formation of valley slopes.
The 1,233-kilometer-long stream has its source in the canton Grisons in the swiss alps.