John G. Neihardt, The River and I
“ For a half-hour, as we proceeded, the sound increased, until it seemed close under our prow. We knew there was no cataract in the entire lower portion of the river; and yet, only from a waterfall had I ever heard a sound like that. We pulled for the shore, and went to bed with the sinister booming under our bow.Waking in the gray dawn, we found ourselves at the mouth of the Niobrara River. Though a small stream compared with the Missouri, so great is its speed, and so tremendous the impact of its flood, that the mightier, but less impetuous Missouri is driven back a quarter of a mile. ”
