I do not know much about gods; but I think that the river is...

I do not know much about gods; but I think that the river is a strong brown god-sullen, untamed and intractable, Patient to some degree, at first recognized as a frontier; Useful, untrustworthy, as a conveyor of commerce; Then only a problem confronting the builder of bridges. The problem once solved, the brown god is almost forgotten By the dwellers in cities-ever, however, implacable. Keeping his seasons, and rages, destroyer, reminder Of what men choose to forget. Unhonored, unpropitiated By worshippers of the machine, but waiting, watching and waiting.