What are Rapids?

  Rapids are a series of very short and fast falls. At the rapids, the river is shallow and flowing very quickly over rocks, boulders and stones sticking out above the water level.

How are Rapids formed?

  When a river flows through an area of alternating bands of resistant and less resistant rocks, the less resistant rocks are eroded more quickly. Therefore, the less resistant rocks are at a lower level compared to the more resistant rocks. This results in the river falling in a series of steps along the bands of resistant rocks to form rapids.

A series of rapids is known as a cataract.


Famous Rapids in the World


    Rapids at McBee Creek, Oregon                                  Bond Falls, Western Michigan