Topographic Surface Change Resulting from Dam Construction
Detailed Description
Topographic surface change resulting from dam construction (Lake Pleasant near Phoenix, Arizona). The images are NED shaded relief (upper left), SRTM shaded relief (upper right), SRTM NED difference grid (lower left) (blue = significant elevation decrease; red = significant elevation increase), and Landsat image (lower right) overlaid with change polygon extracted from SRTM NED difference grid. Note that the polygon aligns closely with the water as depicted on the Landsat image. The area shown is about 9.3 km east-west by 13.9 km north-south.
See the Significant Topographic Changes in the United States project for more information.
Sources/Usage
Public Domain.
Related
Dam Construction
Hydrologic interference is a primary direct anthropogenic process, and dam construction is one type of interference that usually has obvious effects. Certainly, earth materials are moved during dam construction, but the larger impact is the inundation by the reservoir behind the dam.
Related
Dam Construction
Hydrologic interference is a primary direct anthropogenic process, and dam construction is one type of interference that usually has obvious effects. Certainly, earth materials are moved during dam construction, but the larger impact is the inundation by the reservoir behind the dam.