Mississippi River Flooding in 1993
These scenes show various sections of the Mississippi River near St. Louis before and just after the 1993 floods which peaked in late July/early August. The images show the area as seen by the Landsat Thematic Mapper (TM) instrument. The shortwave infrared (TM band 5), infrared (TM band 4), and visible green (TM band 2) channels are displayed in the images as red, green, and blue respectively. In this combination, barren and/or recently cultivated land appears red to pink, vegetation appears green, water is dark blue, and artificial structures of concrete and asphalt appear dark grey or black. Reddish areas in the during flood scenes show where water had started to recede, leaving barren land.
The water has not completely receeded back to its banks even two months after the peak of the floods. The very different land color tone (green in August 1991 and red/pink in November 1993) reflects the dramatic difference in seasons rather than changes due to the flood. By November, trees have lost their leaves and ground cover and farm fields are lying fallow for the winter.