Skip to main content
Arizona Department of Water Resources Logo

Arizona Department of Water Resources

Protecting & enhancing Arizona’s water supplies for current and future generations.

Search form

  • About Us
    • ADWR Strategic Plan and Annual Reports
    • Mission - Values
    • History of the Department
    • Arizona Water Facts
    • Small Business Bill of Rights
    • Career Opportunities
  • How Do I?
    • Apply For
      • Change of Ownership
      • New Well
      • Permit
      • Statement of Claimant, Assignments, Amendments
      • Well Driller's License
      • Funding Opportunities
    • Locate
      • A Surface Water Right
      • A Well
      • Statement of Claiment
    • Get Data
      • AAWS Interactive Map
      • ADWR Dictionary
      • GIS Data Center
      • Data Queries
      • Groundwater Levels
      • Imaged Records
      • Land Subsidence in Arizona
      • Wells 55
      • Wells Data
    • Pay For
      • Annual Report Fee
      • Invoice
    • Report
      • Complaint or Concerns
      • Water Use
      • Share or Report a Water Level - 3rd Party Water Level Data Portal
      • Report Dry Well Data
      • Civil Rights
    • Find Info On
      • Arizona Reconsultation Process
      • Conservation
      • Colorado River Shortage Preparedness
      • Drought Contingency Planning
      • Laws, Rules, & Policies
      • Public Records Request
      • Pinal Groundwater Supply Updates
      • Public Meetings
      • Public Notices
      • Water Levels
      • Wells
      • Legislative Affairs
      • Lower Hassayampa Sub-Basin Groundwater Model Report
  • ADWR News
    • ADWR News
    • Blog
    • Podcasts
    • Videos
    • Archive
  • Home
  • Programs
    • Active Management Areas
    • Adjudications
    • Assured and Adequate Water Supply
    • Colorado River Management
    • Community Water Systems
    • Conservation
    • Dam Safety
    • Drought
    • Engineering
    • Floodplain Management and Flood Warning
    • Governor’s Water Policy Council
    • Hydrology
    • Irrigation Non-Expansion Area
    • Laws, Rules, & Policies
    • Legislative Affairs
    • Management Plans Work Group
    • Recharge
    • Statewide Planning
    • Rural Programs
    • Surface Water
    • Wells and Permitting
    • Water Banking Authority
    • Water Protection Fund
  • Online Services
    • Annual Water Use Report
    • Application Forms
    • Hydrology Publications (eLibrary)
    • Land Subsidence Maps
    • ADWR Live Queries and Reports
    • Recharge Long-Term Storage Credit Balance
    • Imaged Records
    • eNOI
    • Online Notice of Well Capping
    • Pump Installation Completion Report
    • Online Driller's Log
    • Online Payments
    • Change of Ownership
    • Assured & Adequate Water Supply Pending Applications
    • Water Atlas
    • Surface Water Online Notices
    • Interactive Maps
      • Assured and Adequate Water Supply Interactive Map
      • Community Water System (CWS) Interactive Map
      • Groundwater Site Inventory (GWSI)
      • Well Registry Data (55)
      • GIS Data
  • Contact Us
    • Concerns
    • Human Resources
    • Contact Us
    • Public Records Request

The latest in land subsidence

Fissures_Cook

The latest in land subsidence

The latest in land subsidence
Published: June 27, 2018

Subsidence Map

Water Resources has released a new set of maps tracking land subsidence issues throughout Arizona. The 55 new maps depict a continuation of established trends: The largest land subsidence rate remains in southeastern Arizona.

Regions of the Willcox Basin, where agricultural activity remains largely groundwater-reliant, has seen subsidence rates of 15 centimeters per year. The new maps also depict subsidence on the order of 10 centimeters annually in the Douglas Irrigation Non-expansion Area.

As explained in the Hydrology section of the Department’s website, subsidence occurs when water tables decline:

“Land subsidence in the basins of Arizona is generally due to compaction of alluvium caused by lowering of the water table. As the water table declines, pores in the alluvium once held open by water pressure are no longer supported and collapse. Collapse and subsequent lowering in elevation of the land surface is defined as land subsidence. This subsidence is generally not recoverable. If this subsidence occurs over areas of bedrock, differential subsidence can occur.”

Earth Fissure Formation by Differential Compaction (Modified from Galloway et al., 1999)

Arizona Department of Water Resources and their partners in the Arizona Land Subsidence Group are national leaders at employing state-of-the-art subsidence-detection technology to track changes in land surface elevations.

Specifically, the group has deployed Synthetic Aperture Radar (SAR) and interferometric processing (InSAR) to detect those changes.

The 55 new maps cover a variety of different land-subsidence features and time periods. In all, the Department’s library includes 450 subsidence maps. Users are able to navigate to each individual land-subsidence feature here.

 

waves.png

Waves icon
  • Overview
  • News Articles
  • News Blog
  • Audio Podcasts
  • Video

 

telephone-icon.png

Telephone icon
  • [email protected]
  • (602) 771-8500

 

Follow Us

Contact Info

Arizona Department of Water Resources
1110 W Washington Street Suite 310
Phoenix, AZ 85007
Find in Google Maps
Phone: 602.771.8500 | Fax: 602.771.8689
File a complaint

Newsletter Subscription

Sign up to get breaking news and information about Arizona’s water industry!

Lists*

© 1980 - 2023 Arizona Department of Water Resources - Statements & Policies | Site Map