cataract
Cataracts are steep rapids formed by cliffs and boulders inside a river
cataract
CataractSteep rapids formed by cliffs and boulders in a river.Hope this helps or at least is close..
they are called cataracts.
It is known as a waterfall if the fall is down cliffs. If it is a series of shallow waterfalls tumbling over boulders, it is known as cataracts or rapids.
a cataract is steep rapids formed by cliffs in a river.
Catarcts
Cataracts
rapids-a part of a river where the current runs very fast. they are formed where the water flows over obstacles such as rocks and boulders,when there is a change in the gradient of the stream or river, and when the channel narrows suddenly.
shadow cliffs east bay regional park in Pleasanton, California
The rock-filled rapids in the Nile River are called cataracts. They are natural obstacles formed by boulders and rocks that create turbulent waters, making navigation challenging. The Nile has six cataracts located in southern Egypt and northern Sudan.