Acquired April 6, 2011, March 28, 2011, and February 28, 2011, these false-color images show the retreat of snow and advance of water in Minnesota and Wisconsin.
Acquired on March 17, 2010 (top), and August 5, 2009 (bottom), these false-color images show differences in vegetation and river levels at different times of year.
Acquired March 12, 2011, and February 12, 2011, these false-color images show parts of the Ohio and Mississippi Rivers before and after melting snow raised water levels.