Rhine River Basin Rainfall in Average Year

The rainfall pattern shows a distinct area in the middle section where low annual rainfall amounts are registered. The river source is the region of most rainfall, indicating the importance of the upper tributaries to the Rhine. Indeed the Aar River contributes the largest volume as it increases discharge by more than 2 times. This pattern shows the importance of the alpine source of the Rhine where rainfall and glacier melts are crucial to maintaining river flow.

Average Total Rainfall (mm/yr)

Bargraph referencing the colours on the rainfall maps.

Other Rhine Maps

Rhine Rainfall Maps