Theodore Roosevelt actually said...
The results have been highly alarming, as it appears that if the water is not checked it will cut a very deep channel which, progressing upstream in a series of cataracts, will result in conditions such that the water can not be diverted by gravity into the canals already built in the Imperial Valley.
Context
Message to Congress on the Threatened Destruction by the Overflow of the Colorado River in the Sink or Depression known as...
01/11/1907