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Foundation Event August 16, 2017 - 8:30am - 3:30pm

Land Subsidence in the San Joaquin Valley

Land subsidence caused by groundwater pumping has been a problem for decades in the San Joaquin Valley, but an increased reliance on aquifers during the last decade has resulted in subsidence rates in excess of a foot per year in some parts of the region.

In a report released in February 2017, NASA satellite-based and aircraft-based radar mapping prepared for the Department of Water Resources shows how this subsidence is putting state and federal aqueducts and flood control structures at risk of damage. Over time, long-term subsidence has destroyed thousands of public and private groundwater well casings in the San Joaquin Valley.

This special free briefing sponsored by the California Department of Water Resources and the Water Education Foundation highlighted the array of technologies available for subsidence measurement and monitoring, including information and technical support being provided by DWR. Going forward, groundwater sustainability agencies must address managing subsidence in their management plans pursuant to the Sustainable Groundwater Management Act. The briefing was held at the Alice Peters Auditorium (PB 191) in the University Business Center at Fresno State.

Topics discussed included:

  • Update on valley groundwater conditions
  • Update on SGMA program activities
  • Techniques for monitoring land subsidence, including radar remote sensing, extensometers, and GPS data
  • Gaps in subsidence monitoring today
  • DWR technical assistance and resources for SGMA compliance
University Business Center
Fresno State
Fresno, CA
View map
  • Agenda
  • Presentation: Michael McKenzie, California Department of Water Resources
  • Presentation: Steven Springhorn, California Department of Water Resources
  • Presentation: Jeanine Jones, California Department of Water Resources
  • Presentation: Thomas Farr, NASA Jet Propulsion Lab
  • Presentation: Cathleen Jones, NASA Jet Propulsion Lab
  • Presentation: Michelle Sneed, U.S. Geological Survey
  • Presentation: Chris White, Central California Irrigation District
  • Presentation: Steven Springhorn, California Department of Water Resources
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Foundation Event August 16, 2017 - 8:30am - 3:30pm
University Business Center
Fresno State
Fresno, CA
View map
  • Agenda
  • Presentation: Michael McKenzie, California Department of Water Resources
  • Presentation: Steven Springhorn, California Department of Water Resources
  • Presentation: Jeanine Jones, California Department of Water Resources
  • Presentation: Thomas Farr, NASA Jet Propulsion Lab
  • Presentation: Cathleen Jones, NASA Jet Propulsion Lab
  • Presentation: Michelle Sneed, U.S. Geological Survey
  • Presentation: Chris White, Central California Irrigation District
  • Presentation: Steven Springhorn, California Department of Water Resources
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This item appears in:
  • Topic List: Agriculture
  • Event Calendar
  • Past Tours & Events
  • Topic: Groundwater
  • Topic: San Joaquin Valley
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