Joseph F. Poland of U.S. Geological Survey stands near bench mark S661 southwest of Mendota in the San Joaquin Valley, California. The bench mark site subsided 9m from 1925 to 1977, because of intensive withdrawal of gro

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Date: 2000-03-27 18:44:58		Joseph F. Poland of U.S. Geological Survey stands near bench mark S661 southwest of Mendota in the San Joaquin Valley, California. The bench mark site subsided 9m from 1925 to 1977, because of intensive withdrawal of gro Add to Reading List Source URL: wwwrcamnl.wr.usgs.gov Download Document from Source Website File Size: 677,28 KB Share Document on Facebook