National Geographic : 1939 Jan
Photograph byCharles F.Holbrook A WILLFUL RIVER, NOT MARCHING ARMIES, CONSTANTLY CHANGES THE INTERNATIONAL BOUNDARY HERE Before settlers came in large numbers, the Rio Grande, wriggling like a restless serpent, changed its course with every flood. Now engineers oftheAmerican Section of the International Boundary Commission have the United States bank well defined by levees, while Mexican engineers have similarly outlined their side. Minor changes still occur. This air photograph, made during a flood in October, 1938, shows United States territory in the foreground, Mexican beyond theriver. Italso indicates how close the river came to taking a short cut through the narrow levee (right) and presenting to Mexico the land inside theloop.