The Rhume is a 48 km long river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in Lower Saxony

Lower Saxony

Lower Saxony is a German state situated in north-western Germany and is second in area and fourth in population among the sixteen states of Germany...

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. It is a right tributary of the Leine

Leine

The Leine is a river in Thuringia and Lower Saxony, Germany. It is a left tributary of the Aller river and 281 km in length.The river's source is located close to the town of Leinefelde in Thuringia...

. Its source is a karstic

Karst topography

Karst topography is a geologic formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but has also been documented for weathering resistant rocks like quartzite given the right conditions.Due to subterranean drainage, there...

 spring in Rhumspringe

Rhumspringe

Rhumspringe is a municipality in the district of Göttingen, in Lower Saxony, Germany. It is part of the Eichsfeld. The source of the river Rhume is in Rhumspringe....

, south of the Harz

Harz

The Harz is the highest mountain range in northern Germany and its rugged terrain extends across parts of Lower Saxony, Saxony-Anhalt and Thuringia. The name Harz derives from the Middle High German word Hardt or Hart , latinized as Hercynia. The legendary Brocken is the highest summit in the Harz...

 mountain range. The water drains with high pressure from the ground of the funnel-shaped well, known for its tourquoise coulour.

The Rhume then flows in northwestern direction through the municipalities of Gieboldehausen

Gieboldehausen

Gieboldehausen is a municipality in the district of Göttingen, in Lower Saxony, Germany. It is situated on the river Rhume, approx. 25 km northeast of Göttingen, and 15 km south of Osterode am Harz. It is part of the Eichsfeld....

, Katlenburg-Lindau

Katlenburg-Lindau

Katlenburg-Lindau is a municipality in the Landkreis of Northeim, in Lower Saxony, Germany. It is situated approx. 10 km southeast of Northeim, and 20 km northeast of Göttingen...

 and Northeim

Northeim

Northeim is a city in Lower Saxony, Germany, seat of the district of Northeim, with, as of 2002, a population of 31 000. It's located on the German Half-Timbered House Road.-History:...

. It finally joins the Leine

Leine

The Leine is a river in Thuringia and Lower Saxony, Germany. It is a left tributary of the Aller river and 281 km in length.The river's source is located close to the town of Leinefelde in Thuringia...

 river west of Northeim.

Tributaries

• Eller
  Eller (Rhume)
  Eller is a river of Lower Saxony, Germany.-See also:*List of rivers of Lower Saxony...
  
  
• Hahle
• Oder
  Oder (Harz)
  The Oder is a 56 km long river in Lower Saxony, Germany. It is a right tributary of the Rhume. Its source is in the Harz mountains, near Sankt Andreasberg. It flows southwest through Bad Lauterberg, Pöhlde and Hattorf am Harz...
  
  
• Söse
  Söse
  The Söse is a right tributary of the river Rhume, 38 kilometres long, in Lower Saxony, Germany.- Geography :The river rises on the plateau of Auf dem Acker in the district of Osterode in the southwestern part of the Harz Mountains in Germany...
  
  
• Düne