skip to the content of this page Arizona's Official Website Arizona Department of Water Resources
Arizona Department of Water Resources Arizona's Official Web Site
Securing Arizona's Water Future
Ask us a question...Click for site mapClick to use the ADWR DictionaryDepartment Contact InformationADWR CalendarSend page to printerPlace a Bookmark hereSend a link to this pageDecrease font sizeIncrease font size

Primary Purpose: 

To gather, process, and interpret land subsidence and aquifer storage data to help the Department better manage the State’s water resources.  The data are gathered by using survey-grade Global Positioning System (GPS) equipment, gravity meters, and Synthetic Aperture Radar (SAR) satellites.  The data consist primarily of GPS positions and elevations at discrete points, absolute and relative gravity values at discrete points for depth to bedrock and aquifer storage modeling, and broad swaths of SAR data that cover several critical areas of the State.

Geophysics/Surveying Unit Fact Sheet pdf (<1 MB)

List of Past, Current, and Future Projects for the Geophysics/Surveying Unit pdf (<1 MB)


Department Programs Supported:
Queen Creek Earth Fissure

The primary programs supported by the Unit are the Land Subsidence Monitoring Program, the Aquifer Storage Monitoring Program, and Depth-to-Bedrock Modeling Projects.  In addition the Geophysics/Surveying Unit has performed surveys and supplied data to ADWR’s WQARF Unit, the Modeling Unit, the Water Resources Section, the Statewide and Regional Strategic Planning Sections, the Water Resources Investigative Section, and the Office of Surface Water.

Earth fissure located at the NW Corner of Happy Rd and 196th St in Queen Creek



In the past the Geophysics/Surveying Unit has worked collaboratively with a number of outside groups to perform projects that aid the Department in water resource management, require survey-grade GPS measurements, gravity measurements, and/or the collection, processing, and interpretation of InSAR data, and are mutually beneficial to all participants involved.  These groups include: 

CAP Canal - Pool 24
Central Arizona Project Canal
Pool 24 subsidence mitigation project
(Photo Courtesy of CAP)
  • Flood Control District of Maricopa County
  • Pinal County Flood Control District
  • Maricopa County Department of Transportation
  • Arizona Geological Survey
  • Arizona Department of Transportation
  • Arizona State Land Department
  • Salt River Project
  • Central Arizona Project
  • Metropolitan Domestic Water Improvement District
  • Community Water Company of Green Valley
  • City of Scottsdale
  • City of Surprise
  • Cochise County
  • Petrified Forest National Park
  • Arizona State University
  • University of Arizona
  • National Geodetic Survey
  • United States Geological Survey
  • National Aeronautics and Space Administration
  • University of Texas at Austin Center for Space Research
  • Microsoft Vexcel Corporation
  • Neva Ridge Technologies
  • AMEC Earth and Environmental
  • Arizona Land Subsidence Group

If your group has such a project and feel that collaboration with ADWR would be helpful, please contact us.

If you wish to request data from the Geophysics/Surveying Unit, please download the fillable Data/Public Request Formpdf and return it by email or fax.


Hydrology Division Navigation Links

Use the above links to navigate the Hydrology Division