if the Grand Canyon was created by water erosion from the Colorado river, then how come there isn’t grand Grand Canyons around all or most major rivers?

Question

if the Grand Canyon was created by water erosion from the Colorado river, then how come there isn’t grand Grand Canyons around all or most major rivers?

In: Earth Science

Answer 1

One reason that hasn’t been touched on yet in this thread is — the Colorado is a much “wilder” river than, say, the Mississippi. It is geologically younger, physically shorter, drops farther, and floods more violently and frequently. Hoover Dam, for example, was built only in part to produce electricity — the major reason was flood control, as the flooded Colorado had created the Salton Sea a few decades prior.