A dramatic rescue and a baby boom for San Gabriel Mountains turtles

After fires and floods, Southern California’s only remaining native freshwater turtle recently got a boost.

Just last month, 15 southwestern pond turtle hatchlings were released into the San Gabriel River — a major milestone in an effort to restore the vulnerable turtle population.

But this wasn’t a typical raise-and-release scenario.

These turtles’ parents went on a harrowing journey before they were born.

A daring rescue

In early September 2020, amid a heat wave and dry weather, a tree branch hit a Southern California Edison power line, igniting the Bobcat Fire.

The fire eventually scorched more than 180 square miles — mostly forest in the San Gabriel Mountains. For comparison, the 2025 Eaton Fire burned about 22 square miles.

Lights from a fire truck illuminate firefighters working the Bobcat Fire in September 2021.

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Frederic J. Brown

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Getty Images

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As the Bobcat Fire spread, biologists grew worried. The fire was burning in the West Fork of the San Gabriel River, a biodiversity hotspot and refuge for bears and mountain lions, the federally protected Santa Ana sucker fish and the mountain yellow-legged frog.

It’s also home to the largest remaining — and possibly only — population of southwestern pond turtles in the entire watershed. Their exact numbers aren’t known, but it’s likely less than 200.

“Because this hadn’t burned in decades and decades and decades, there was big concern about debris flows,” said Robert Fisher, a biologist with the U.S. Geological Survey.

Scientists hoped the turtles would be able to ride out the fire itself by staying in the water, but any rain after would likely lead to a deluge of mud, trees and other burned materials. That would be akin to an avalanche for the turtles in the river, and it had the potential to wipe out the entire population.

Once the flames died down, Fisher and a team of biologists, in partnership with the California Department of Fish and Wildlife and U.S. Forest Service, trekked to the home of the pond turtles.

“It was a moonscape,” Fisher said.

They waded through ashy, murky waters, eventually collecting 11 adult turtles.

A temporary home and 15 surprises

The turtles were taken to the San Diego Zoo, where the plan was to hold them until their mountain habitat recovered enough for them to return.

By 2024, the San Gabriel Mountains were looking far better — biologists even found some pond turtles that survived major debris flows.

But right before the turtles were set to go back home, scientists got a surprise.

“Just before we were getting to release, we found a baby turtle, which is amazing,” said Brandon Scott, wildlife care manager of herpetology and ichthyology at San Diego Zoo Wildlife Alliance. “You don't know how long it's going to take to restart that process of them actually being able to breed, with the stress and it's a new habitat.”

A juvenile southwestern pond turtle is weighed before being released to the wild.

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Ken Bohn

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Courtesy San Diego Zoo Wildlife Alliance

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The turtles and the new baby were all returned to their home in the San Gabriels. But then came another surprise. And another.

“We just continually, every day, started finding a baby in that habitat,” said Scott.

Female southwestern pond turtles lay and bury their eggs in late spring or early summer. Juveniles emerge months later, only about the size of a quarter.

Fifteen babies later, conservation staff were shocked and pleased.

Their goal for the 11 rescued turtles was to make sure they could thrive before being released back into their habitat. “But in the process,” Scott said, “yes, we made it comfortable enough for them to breed.”

A hopeful release

The new generation of southwestern pond turtles was released in April near the spot their parents were rescued from in the San Gabriel River.

Such rescues of vulnerable wildlife are becoming increasingly common in the face of more catastrophic fires. All but two of the biggest fires in recorded history have been in the last 20 years.

Fisher said a similar rescue of pond turtles had occurred only once before, after the 2009 Station Fire in the San Gabriels. That time, the turtles were quickly returned to their habitat.

A staff member of the San Diego Zoo Wildlife Alliance releases a juvenile southwestern pond turtle into the San Gabriel River.

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Ken Bohn

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Courtesy San Diego Zoo Wildlife Alliance

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That rescue, in part, inspired the U.S. Geological Survey to work with the San Diego Zoo to build a conservation habitat for southwestern pond turtles nearly two decades ago. And the Bobcat Fire became the first time it was used for wild rescues, Fisher said.

Ironically, the Bobcat Fire could eventually help the local population, Fisher said.

“We’ve known about [the population] for decades, but it’s not really thriving,” he said. “So this helped give it a head start. And because the fire was so intense, it opened up a lot of habitat.”

With less tree canopy and more sunlight, the cold-blooded reptiles could thrive in warmer waters and on sunnier rocks.

But the new generation is key.

“Because the site was so forested and hadn’t burned in so long, we don’t think they were having good success at breeding,” Fisher said. “Now we think we’ve really enhanced the population by putting more animals out there, especially young animals.”

Scott and Fisher said the saga has inspired preliminary conversations about formalizing breeding efforts to support the population. The little turtles' myriad threats have yet to let up, so they’ll likely need more help in the future.

But at the moment, there’s a little more hope — at least 16 hatchlings and 11 adults' worth of hope, to be exact — for California’s only native freshwater turtle.