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No; in fact the rate of erosion not only varies from river to river, it depends on the type of rock the river flows over, the rate of flow and the season.
the Missouri,.Rock River, Ohio River, Red River and White River and others
The Hudosn River? It flows over rock that has been around since the Middle Proterozoic Time Period. That is more then 542 million years ago!!!!
shell rock
Sometimes, a waterfall when a river flows from hard rock to softer rock. The softer rock, such as limestone, is easily eroded, or worn away, by the flow of the river.
a spring whose water flows from a crack in the cap rock over the aquifer
can tile be placed over river rock
The plateau over which the River Zambezi flows, including the Falls is Basalt. Some fissures are of sandstone
The molten rock material that flows over the earth's surface is known as magma. This is what will be emitted from a volcanic eruption.
Water fall
it is a waterfall
Water fall