ACTIVITY CALENDAR
Anza-Borrego Desert Natural History Associaton
P O BOX 310, Borrego Springs, CA 92004  760-767-3098
Important Program Information
Unless specified otherwise in the activity descriptions below, all hikes and field trips have a
15 person limit and they begin in the ABDNHA parking lot.
Many of our programs are in high demand and often have waiting lists.  If you register for a program and cannot attend please contact our Borrego Nature Center (760-767-3098) so that others can be notified to attend. 

All of our hikes are now rated from EASY to STRENUOUS  View the Rating System

SPECIAL DESERT LECTURE SERIES WEBINAR
Apr. 25, Thu., 6:30 p.m. – 8:00 p.m. 
Lithium and the Salton Sea
Speaker: Jim Turner, Director and Chief Operating Officer of Controlled Thermal Resources

The webinar is free but registration is required:  REGISTER


The webinar is free but registration is required:  REGISTER

ABDNHA's webinar in 2022 with Jim Turner about lithium extraction at the Salton Sea was our most highly attended webinar ever.  Controlled Thermal Resources (CTR) is one of three companies that will be extracting lithium from facilities on lands just south of the sea.  Construction of CTR's plant is now underway.  Jim returns tonight with an update on lithium extraction at the Salton Sea, an explanation of how the extraction will take place, and background history of geothermal power production at the sea. For millions of years the Salton Sea basin has been stretched and pulled apart by the action of the San Andreas fault, resulting in what is called the Salton Trough. 

For all of those millions of years water has poured in from the surface, water that is rich in minerals.  At a depth of 8,000 feet below the surface vast amounts of superhot water, or brine, holds one of the richest sources of lithium in all of North America.   The geothermal industry has made use of that that hot water for decades, extracting the hot water from deep beneath the earth, using the steam to generate geothermal electricity, and then pumping the water back down into the earth. 

Lithium extraction adds one step to that process; lithium is taken out of the water before it is pumped back down.  Lithium is essential for the needs of America’s electric future, for electric vehicles, computers, solar power storage, batteries, and communication. The Salton Sea basin is America’s largest source of the important metal and one of the world’s largest, with annual production estimated to be as much as 600,000 tons. There are very few large sources of lithium in North America. The extraction process of removing lithium from super-heated brine 8,000 feet below the surface also has the potential to make the Salton Sea lithium extraction process one of the greenest lithium mining projects in the world.  


May. 23, Thu., 6:15 pm – 9:00  p.m.
Last event of the Season: Sunset and Moon Rise at Fonts Point
Leader: Mike McElhatton , ABDNHA Program Director

This is a very informal get together in a beautiful location marking the end of ABDNHA's 2023-2024 desert season.  Everyone is welcome and there is no charge but the activity is limited to 22 people. 
Registration required. 
Call to reserve, 760-767-3098.

This event was becoming ABDNHA’s traditional end of season activity until COVID interrupted.  Tonight we pick up the tradition again.  

Please be at the ABDNHA parking lot and ready to go no later than 6:15 pm.  We will make carpool arrangements as needed and will leave the ADNHA parking lot in time to drive to Fonts and be set up with our chairs and snacks to catch the fullmoon rise over the Borrego Badlands at 7:19 p.m.  Then we enjoy the scenery, the company, and the sight of the moon over the badlands, and catch the sunset at 7:45.  We can then spend a little more time, as everyone wishes, and should be back in Borrego by 9:00 PM at the latest.  Bring folding chairs and snacks or other food to share and whatever beverage you prefer.   We would like to have a few small tables; if you have one, please give us a call (760-767-3098) or let us know when you register so we can coordinate.