SDAG monthly meeting
Wednesday - July 16 |
Location:
Catalina Room (south end of MVCC)
Marina Village Conference Center
1936 Quivira Way
San Diego, CA 92109
Directions:
FROM INTERSTATE 5: Take the SEA WORLD DRIVE exit. From SEA WORLD DRIVE,
take WEST MISSION BAY DRIVE on your right. When you see the large green sign that
says QUIVIRA ROAD, get in the farthest left of the two left turn lanes. Turn left, go one
very short block and turn left again. Drive about one half mile and MARINA VILLAGE will
be on your right.
FROM INTERSTATE 8:Exit at SPORTS ARENA BLVD., then take WEST MISSION BAY DRIVE exit to the right.
You will be on INGRAHAM STREET for a short distance from which you will take the next exit
marked WEST MISSION BAY DRIVE on your right. When you see the large green sign
that says QUIVIRA ROAD, get in the farthest left of the two left turn lanes. Turn left, go
one very short block and turn left again. Drive about 1/2 mile and MARINA VILLAGE will be on your right.
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6:00pm -
Social hour
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SDAG Monthly Meeting
6:00pm - Happy Hour
7:00pm - Dinner
8:00pm - Program
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7:00pm
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Menu: Hawaiian Buffet (includes Kahlua Pork, Sweet & Tangy Barbecue Chicken, and vegetarian options) sides include fruit salad,
Hawaiian veggies, rice, rolls, & dessert
if pre-registered by the deadline, $5 extra if you did not make a reservation.
Click the SDAG member checkbox on the reservation form if you are a member.
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Cost: $ 55.00 Member; Non-Member $ 65.00; Student $ 25.00
Reservations:
Make/Pay your reservation online by clicking the button below
by 6:00pm Sunday, July 13
RESERVATIONS CANNOT BE ACCEPTED AFTER by 6pm Sunday, July 13
(Please note beginning January 2024 all meeting reservations will require on-line pre-payment due to venue costs,
venue contracts, and loss of money due to no shows.)
IF YOU DO NOT PRE-PAY YOUR FOOD RESERVATION, WE CANNOT GUARANTEE YOU A MEAL.
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8:00pm - Program
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"Is this spring connected to that Aquifer?"
Speaker: Rachel Maxwell, PG - Senior Scientist I at Roux
Desert ecosystems are an environment of climatic extremes, characterized by scarce water and sparsely vegetated lands.
Here ecological adaptation to arid conditions is highly dependent on water to support life. However, despite these
climatic extremes, the Mojave-Sonoran Desert area is one of the most important ecological regions in the southwestern
United States. In this region, springs play an important role in supporting important biodiversity hotspots, whose water
is used by both wildlife and humans. While water sources that sustain many of the springs in the Mojave-Sonoran Desert
are poorly understood, it is acknowledged that small variations in groundwater elevation can have considerable effects
on surface spring discharge. With the increasing use of groundwater, the effect of groundwater extraction on
groundwater-dependent ecosystems in the Mojave-Sonoran Desert is an ongoing concern. Therefore, a greater understanding
of spring-aquifer connectivity is needed. Regional investigations were conducted using various forensic tools and
integrating multiple lines of evidence from approximately 200 springs throughout the Mojave-Sonoran Desert area. These
lines of evidence included field water quality parameters such as temperature, pH, and conductivity, as well as geochemical
characteristics of water including stable isotope, radiocarbon, and tritium analyses. Coupled with spring-site geology,
these results increased the understanding of groundwater flow-paths throughout the Mojave-Sonoran Desert area. Which in
turn has important implications for managing activities potentially impacting groundwater and desert springs. Here we
review case studies from our spring monitoring efforts that began in 2010 and the forensic tools used to better understand
the spring-aquifer connectivity in the Mojave-Sonoran Desert area.
Rachel Maxwell is an experienced Professional Geologist with a demonstrated history of working in the environmental services industry.
She is skilled in data analysis, environmental forensics, litigation support, site assessments, water resource assessments, remediation,
and land mitigation assessments. Rachel has worked with environmental issues at a wide array of industries, including dry-cleaning
facilities, industrial manufacturing facilities, municipal/industrial landfills, metal smelting facilities, and remote desert ecosystems.
Rachel earned her Master's degree in Soil, Water, and Environmental Science from the University of Arizona and continued her education in
Geology at the University of California, Berkeley and South Dakota School of Mines and Technology.
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Upcoming SDAG meetings - 2025
July 16 - Rachel Maxwell on a survey of the Mojave-Sonoran Desert Springs and their sources. "Is this spring connected to that Aquifer?" at Marina Village - Catalina Room.
August 20 - Dr. Mario Caputo on "Newly Discovered Tetrapod Bones, Insect Trace Fossils, & Eolian Adhesion Structures- Upper Pennsylvanian Wescogame Formation, Supai Group, Grand Canyon, Arizona"
September 26-28 - SDAG Annual Field Trip, San Andreas Fault in the Wrightwood area, Transverse Ranges (no meeting this month)
October 15 - Todd Wirth on "First report of marine invertebrate megafossils from the Eocene Mount Soledad Fm at Tourmaline Surfing Park"
November 19 - Joint Meeting with AEG Inland Empire Section - Eldon Gath on "San Joaquin Hills, Santa Ana Mountains, Puente Hills, and the Whittier fault: The final(?) grand theory of Orange County's tectonic geomorphic evolution"
December 17 - Traditional Holiday Celebration at the San Diego Natural History Museum with Tom Deméré
Recordings of past meetings
Note: If the video or sound does not play, try using another web browser. Firefox and Chrome may work on some of the videos. MS Edge and Safari are most likely to work.
6/18/2025 Development of the western Hollywood Basin and Cheviot Hills, and newly identified blind thrust in Santa Monica Bay - Dr. Miles Kenney
5/14/2025 Landslide Stabilization - Dr. Sebastian Lobo-Guerrero (Audio is very quiet first few minutes.)
4/16/2025 Constraining Natural and Anthropogenic Controls on Base of Freshwater and Underground Source of Drinking Water (USDW) In Central San Joaquin Valley - Emily Imperato
4/16/2025 Examination of Middle Cambrian hyoliths from the Manuels River Formation of Avalonian southeastern Newfoundland - Nicolas Oliver
2/19/2025 A New Seismotectonic Framework for Active Faults in Metropolitan San Diego - Karl Mueller
8/21/2024 Upper Cretaceous through lower Eocene strata in San Diego: Messages for the end-Cretaceous impact, extinctions, and paleoclimates - Dr. Pat Abbott
5/15/2024 Exploring Iceland's Geological Wonders: From a Regional Perspective to a Hiking Expedition - Don Barrie & William Buckley
3/19/2024 Mighty Bad Land: A Perilous Expedition to Antarctica Reveals Clues to an Eighth Continent - Bruce Luyendyk
Meetings are usually scheduled for the 3rd Wednesday evening of the month.
Meeting information on this website is normally updated the second week of the month.
If you are a current SDAG member and are not getting e-mail announcements,
make sure the SDAG secretary has your correct e-mail address.
If you have any information, announcements, ads or suggestions for an upcoming newsletter, please submit it to
2025 SDAG Secretary.
Any news regarding upcoming events that may be of interest to the Association or news of your business can be submitted.
The submittal deadline for the next SDAG newsletter is the last Friday of the month.
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