Wednesday, April 08, 2009

Landsat shows drought impact on Lake Mead

Landsat satellite images of Lake Mead taken between 1990 (upper left), 1995 (upper right) and the present (lower left) show the dropping lake level.

The red color in the lower right image (difference between 1990 and 2009) shows where the water level has dropped. These false-color images use TM bands 7,4,2. [photo credit, NASA/USGS]

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