Monthly Meetings & Calendar of Events

Joint AEG/GRA Holiday Meeting: Wednesday, December 16

Please join us on Wednesday, December 16, 2020 at 5:00PM for our annual joint AEG/GRA holiday meeting! This month will be a virtual event and we will be hosting Jim Bailey from Shannon & Wilson, who will be giving a presentation titled Migrating Mud Pot – Emergency Responses to Protect Critical Transportation Infrastructure.

You can join the Zoom meeting by clicking HERE! Or see below for meeting information:

Meeting ID: 846 9278 8223
Passcode: 688863

One tap mobile
+16699006833,,84692788223#,,,,,,0#,,688863# US (San Jose)
+13462487799,,84692788223#,,,,,,0#,,688863# US (Houston)



Jim Bailey has more than 36 years of water supply development and ground water management experience. His water resource work has focused on municipal water supply including water rights, well design/construction, and evaluation of well performance issues. He is a nationally recognized expert in the area of well development and rehabilitation, and a frequent speaker at workshops on well performance and rehabilitation throughout the U.S. and Canada.


The Salton Sea located in southern California, is the southern terminus for the San Andreas fault and a locale for sediment hosted, low temperature geothermal features.  Commonly known as mud pots, these features are believed to form in this area by decarbonation reactions involving sedimentary carbonate that generate carbon dioxide (CO2) gas.  As the gas rises through various water bearing sediments, likely along existing fault lineaments, they pull sediment and water toward the surface. 

In early 2018 one of these mud pots began migrating toward a critical Union Pacific rail line, a fuel pipeline and California Highway 111 paralleling the east side of the Salton Sea.  This was the first time a mud pot had been observed migrating.  The mud pot produces a sediment slurry at approximately 30 to 40 gallons per minute, eroding soils in the direction of the railroad tracks.  As the mud pot got closer to the tracks the railroad took actions to stop or redirect the migration.

Initial actions included multi-method geophysical surveys, dewatering of the mud pot caldera, and installation of a sheet pile wall.  After Imperial County declared an emergency, three deep borings/wells were drilled to depths up to 800 feet deep.  The borings were used to determine the feasibility of depressurizing one or more aquifers that might be contributing to the flow.  Drilling conditions were challenging due to high concentrations of CO2, H2S, daytime temperatures up to 1150 F, and occurrence of high-pressure gas and water. 

In late September of 2018 the mud pot breached the sheet pile wall and UPRR was forced to construct two temporary tracks.  The fuel pipeline was re-routed in early 2019.  The California Department of Transportation took defensive measures in 2019 in anticipation of the Mud pot impacting Highway 111.  As of February 2020, mud pot movement has slowed but still moving in a westerly direction.


  • Social Hour/Waiting Room Opens – 4:45 – 5:00 p.m.
  • Announcements & Introductions: 5:00-5:15 pm
  • Presentation: 5:15 – 6:15 pm
  • Q&A: 6:15 – 7:30 pm

Feel free to BYOB!


No Charge! Virtual Meeting

Please RSVP Here!

2020 Calendar of Events

January 21 AEG January Meeting

Speaker: Mitchell Swanson

Talk: Lower American and Sacramento Rivers Geomorphology Applications for Bank Erosion and Levee Stability and Ecosystem Restoration

Location: Aviators, Sacramento

Registration: HERE!
February 25 AEG February Meeting: Jahn’s Lecturer Series

Speaker: Scott Lidnvall

Talk: Characterizing Fault Displacement Hazards: Significant Progress and Significant Uncertainties

Location: Aviators, Sacramento

Registration: HERE!
February 28 Taber Ranch Foundation Drill Class

Annual Taber Ranch one day course for undergraduate students.
March 24 (POSTPONED)AEG March Meeting

Speaker: Jim Bailey

Talk: Migrating Mud Pot – Emergency Responses to Protect Critical Transportation Infrastructure (POSTPONED)
April 3
Undergraduate and Graduate Scholarships Deadline

Deadline: Friday, April 12th
April 21 (CANCELLED)
Annual Student Night

Theme: Student poster presentations, student-professional interaction and networking, AEG presentation of scholarship recipients

Location: Old Spaghetti Factory, Sacramento
May 19 (POSTPONED)AEG May Meeting

Speaker: Alex Morelan

Talk: Ridgecrest Earthquakes

Location: Aviators, Sacramento
June 23AEG June Meeting

Speaker: Augie Smarkel

Talk: Slope Stability Case History Project in the AP Zone Along the Hayward Fault

Location: Zoom Virtual Meeting
JulyNo July Meeting
August 23No August Meeting
September 24No September Meeting: Annual Meeting
October 27 AEG October Meeting

Speaker: Renmin Pretell

Talk: Liquefaction and Cyclic Softening at Balboa Boulevard During the 1994 Northridge Earthquake

Location: Zoom Virtual Meeting
November 17 (POSTPONED)Joint AEG/CalGeo Emerging Professionals November Meeting

Speaker: Ross Boulanger

Talk: Liquifaction

Location: TBD
December 16Annual Joint GRA/AEG Holiday Meeting

Speaker: Jim Bailey

Talk: Migrating Mud Pot – Emergency Responses to Protect Critical Transportation Infrastructure

Location: Zoom Virtual Meeting