Cairo, Illinois to the Gulf of Mexico Mile 953 A.H.P. to Mile 22 B.H.P.

In 1988, the U.S. Army Corps of Engineers began an investigation of the benefits and costs of extending several locks on the lower portion of the Upper Mississi

While John McPhee was working on his previous book, Rising from the Plains, he happened to walk by the engineering building at the University of Wyoming, where