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Image: SanJoaquinDrop

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Original image(499 × 1,247 pixels, file size: 171 KB, MIME type: image/jpeg)

Description: Pole showing location of maximum groundwater-induced subsidence in the San Joaquin Valley, CA. Distance from ground to 1925 marker ~28 feet.
Title: SanJoaquinDrop
Credit: http://pubs.usgs.gov/circ/circ1182/pdf/06SanJoaquinValley.pdf
Author: USGS (unknown photographer)
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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