River Erosion Quotes

In the space of one hundred and seventy-six years the Mississippi has shortened itself two hundred and forty-two miles. Therefore, in the Old Silurian Period the Mississippi River was upward of one million three hundred thousand miles long, seven hundred and forty-two years from now the Mississippi will be only a mile and three-quarters long. There is something fascinating about science. One gets such wholesome returns of conjecture out of such a trifling investment of fact.

When the aggregate amount of solid matter transported by rivers in a given number of centuries from a large continent, shall be reduced to arithmetical computation, the result will appear most astonishing to those...not in the habit of reflecting how many of the mightiest of operations in nature are effected insensibly, without noise or disorder.

The Colorado River did not form the Grand Canyon. The Grand Canyon was formed as the flood went down.

As for the flood carving Grand Canyon, why don't they explain to us why the top of the Canyon is 4,000ft higher than where the river (Colorado River) enters the canyon? Why don't they explain to us how rivers miraculously flowed up-hill for millions of years to finally cut the groove deep enough so they could flow downhill?

A river without banks is a large puddle.

The Tigris is so fierce and rapid, and swallows its alluvial banks so greedily, that it is probable that some of the buildings described by the Hebrew traveller Benjamin of Tudela as existing in the twelfth century were long since carried away.

The progress of rivers to the ocean is not so rapid as that of man to error.

Men who stand on any other foundation than the rock Christ Jesus are like birds that build in trees by the side of rivers. The bird sings in the branches, and the river sings below, but all the while the waters are undermining the soil about the roots, till, in some unsuspected hour, the tree falls with a crash into the stream; and then its nest is sunk, its home is gone, and the bird is a wanderer.

This king [Sesostris] divided the land among all Egyptians so as to give each one a quadrangle of equal size and to draw from each his revenues, by imposing a tax to be levied yearly. But everyone from whose part the river tore anything away, had to go to him to notify what had happened; he then sent overseers who had to measure out how much the land had become smaller, in order that the owner might pay on what was left, in proportion to the entire tax imposed. In this way, it appears to me, geometry originated, which passed thence to Hellas.

If you look at the Nile on a map of Egypt, you don't think it has moved very much, but the river is very violent and has moved over time.