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Essential Lens: Analyzing Photographs Across the Curriculum

Earth, Climate, and Change: Observing Human Impact #3606


Date: August 2, 1999 (left) and June 8, 2011 (right)
Location: Pakistan
Photographer: NASA
Source: U.S. Geological Survey Landsat Missions Gallery “Mirani Dam,” U.S. Department of the Interior/USGS and NASA


The Mirani Dam on the Dasht River in southern Pakistan was completed in 2006. The resulting reservoir provides water for drinking, irrigation, and hydroelectric power. Though the dam also helps to control flooding, heavy rains in 2007 increased the reservoir depth from 244 to 271 feet (74 to 82 meters) with attendant flooding that displaced more than 15,000 people. The left image shows the region before the dam was built. The image on right image shows the dam in 2011 with the expanded agriculture that the dam’s water supports.


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  • ISBN: 1-57680-905-6