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U.S. Geological Survey Open-File Report 2011–1287

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# Gravity Data from the San Pedro River Basin, Cochise County, Arizona

#### By Jeffrey R. Kennedy and Daniel Winester

| Abstract
      The U.S. Geological Survey, Arizona Water Science Center in cooperation with the National Oceanic and Atmospheric Administration, National Geodetic Survey has collected relative and absolute gravity data at 321 stations in the San Pedro River Basin of southeastern Arizona since 2000. Data are of three types: observed gravity values and associated free-air, simple Bouguer, and complete Bouguer anomaly values, useful for subsurface-density modeling; high-precision relative-gravity surveys repeated over time, useful for aquifer-storage-change monitoring; and absolute-gravity values, useful as base stations for relative-gravity surveys and for monitoring gravity change over time. The data are compiled, without interpretation, in three spreadsheet files. Gravity values, GPS locations, and driving directions for absolute-gravity base stations are presented as National Geodetic Survey site descriptions. | First posted December 23, 2011
-  **Report** PDF  (1 MB) 
-  **Appendixes** folder .  This folder contains appendixes 1–4 in several file formats (5.2 MB total).
- This report is available only on the Web.

**For additional information contact:**Office information, Arizona Water Science Center          U.S. Geological Survey          520 N. Park Avenue          Tucson, AZ 85719http://az.water.usgs.gov/

Part of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |
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### Suggested citation:

Kennedy, J.R., Winester, D., 2011, Gravity data from the San Pedro River Basin, Cochise County, Arizona: U.S. Geological Survey Open-File Report 2011–1287, 11 p. and data files, available at https://pubs.usgs.gov/of/2011/1287/.

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