Neckar

River in Germany
The Neckar is a 362-kilometre-long river in Germany, mainly flowing through the southwestern state of Baden-Württemberg, with a short section through Hesse. The Neckar is a major right tributary of the Rhine. Wikipedia
Source: Black Forest
Length: 225 mi
Discharge: 5,121 ft³/s
Basin size: 13,928 km2 (5,378 sq mi)