A somewhat pedantic and dullish book, not commensurate with the brilliance of the Rivers of America volumes, with which this has no connection. The facts are there, in running commentary on the history of the valley, from the struggle against the Indians to the present efforts of man to harness the river itself. Transportation -- agriculture -- towns and villages -- educational communities -- all there, but uninspired. Perhaps the pace of the whole is slowed down by the constant reference to footnotes. A book for reference, not for reading.