ScientificAmerican1908-10-31.jpg Scientific American 1908-10-24ThumbnailsScientific American 1908-11-07Scientific American 1908-10-24ThumbnailsScientific American 1908-11-07Scientific American 1908-10-24ThumbnailsScientific American 1908-11-07Scientific American 1908-10-24ThumbnailsScientific American 1908-11-07Scientific American 1908-10-24ThumbnailsScientific American 1908-11-07

The Yuma Arizona irrigation dam. Filling in the adjacent lowlands at dam. Note tree growth to break force of current. View below the dam, showing the river in flood.



Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner