Location: California-Mexico Border
Source: USGS Earthshots

false-color infrared image of U.S./Mexico border

TOP: 1973 Landsat 1 MSS false-color infrared image of U.S./Mexico border. BOTTOM: 1992 Landsat 4 MSS false-color infrared image of U.S./Mexico border.

These images show the different land use patterns of El Centro, California, and the urban area of Mexicali/Calexico on the California-Mexico border. From 1970 to 1990, these cities’ populations grew by the following amounts:

El Centro: 19,272 to 31,384 (63%)
Calexico: 10,625 to 18,633 (76%)
Mexicali: 459,900 to 712,400 (55%)