Land Subsidence in California (IMAGE)

Stanford University

Land Subsidence in California

Caption

Land surface in California’s San Joaquin Valley subsided about 29 feet (9 meters) between 1925 and 1977 because of groundwater depletion. Signs on the telephone pole indicate the former elevations of the land surface in 1925 and 1955.

Credit

Richard Ireland, U.S. Geological Survey (1977)

Usage Restrictions

CREDIT: Richard Ireland, U.S. Geological Survey (1977)

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