EBMUD Experts to discuss fossil discovery on Mokelumne River Watershed for Water Wednesday series

WHAT: EBMUD Ranger Naturalist Greg Francek and Spokesperson Nelsy Rodriguez will offer a firsthand account of the discovery of Miocene Epoch fossils on the Mokelumne River watershed. The virtual event will include a presentation of the findings, trivia, and a raffle.

WHEN: September 15, 6 - 7:30 p.m.

WHERE: Online at https://tinyurl.com/p78hsrwy 

WHY: In the summer of 2020, an EBMUD ranger discovered a trove of Miocene Epoch fossils dating back as many as 10 million years on the Mokelumne River watershed. The discovery offers insight into the types of prehistoric animals that may have roamed the ancient landscape that today is known as the Mokelumne River and is the primary drinking source for 1.4 million people in the East Bay. Working with scientists at California State University, Chico, EBMUD has successfully excavated hundreds of fossils representing dozens of species,  and continues to discover more. The site and the fossils are protected by the U.S. Paleontological Resources Preservation Act, and public access to the discovery site is not allowed. However, many of the fossils will be on display at Chico State’s Gateway Science Museum. The exhibit will open to the public on October 1, 2021.


  • October 20, 2021, 6 p.m., What’s in your water? Is all water the same?
  • November 17, 2021 6 p.m., Drought Mythbusters, the real deal

Learn more at: ebmud.com/waterwednesday


The East Bay Municipal Utility District has a proud history of providing high-quality drinking water for 1.4 million customers in Alameda and Contra Costa counties. EBMUD’s wastewater system serves 740,000 customers and helps protect the ecosystem of San Francisco Bay. EBMUD is a not-for-profit public agency established in 1923.

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