''In the 1950s, a series of dams was proposed along the Brazos River in north-central Texas. For John Graves, this project meant that if the stream’s regimen was thus changed, the beautiful and sometimes brutal surrounding countryside would also change, as would the lives of the people whose rugged ancestors had eked out an existence there. Graves therefore decided to visit that stretch of the river, which he had known intimately as a youth. Goodbye...