Protecting Sargent Ranch: A Major Conservation Win in South Santa Clara County

WHY SARGENT RANCH MATTERS

There’s no denying that Sargent Ranch hosts a scenic natural beauty that is distinctly Californian. It also provides numerous environmental benefits, like protecting local watersheds and sequestrating carbon.

But our number one reason to conserve this land is that it is a major win for biodiversity, safeguarding habitats and essential landscape connectivity for species that journey between the Santa Cruz Mountains, Gabilan and Diablo Ranges.

Importantly, it also helps preserve the core of the Juristac Tribal Cultural Landscape, held sacred by the Amah Mutsun Tribal Band.

Seen from above, Sargent Ranch’s rolling terrain reveals the scale, connectivity, and natural beauty that make this landscape so significant:

PRESERVING THE JURISTAC TRIBAL CULTURAL LANDSCAPE

Sargent Ranch is at the heart of a region that the Amah Mutsun Tribal Band calls Juristac, meaning “Place of the Big Head.” For millennia, Indigenous peoples gathered at Juristac for sacred ceremonial dances and healings. Many regard it as a home to spiritual deities. For countless generations, the Amah Mutsun and their ancestors stewarded the landscape. Amid its lush vistas, they hunted, fished, and collected plants for food, craft, and medicine while residing in small, nearby villages.

For our partners at the​ ​Amah Mutsun Tribal Band and Amah Mutsun Land Trust, protecting so much of Juristac is an exciting achievement. “We are grateful to all who have worked alongside our Tribe to make this dream a reality,” Chairman Ed Ketchum says. He adds that Juristac is a place of great power, where spiritual doctors lived and conducted healings. ”The history of our people is written across the landscape and lives today in our stories,” he enthuses. “The protection of Juristac honors our ancestors and brings hope for a brighter tomorrow when we can return to our sacred grounds and restore our traditions.”

FROM LAND GRANTS TO DEVELOPMENT PROPOSALS

Over the past few centuries, Sargent Ranch has undergone many changes. During the Spanish period in the early 1800s, Mission San Juan Bautista claimed the land. By 1835, in the Mexican period, it became a Mexican land grant known as Rancho Juristac. Then, in the mid-1800s, the ranch’s namesake, James P. Sargent, purchased the property with his fortune from California’s Gold Rush​​. Under his ownership, the grounds included a railroad depot, saloon, and other infrastructure.  

Since then, the property has had several owners and has been subject to various unrealized plans for development. Most recently, a group of investors called Sargent Ranch Partners LLC proposed a sand and gravel mine on the site. 

Years of advocacy through the Protect Juristac campaign raised awareness of the need to conserve Sargent Ranch. Led by the Amah Mutsun Tribal Band and Green Foothills, the robust campaign convened regional conservation organizations, faith communities, civil rights organizations, and grassroots community groups.

HERE COMES LANDSCAPE-SCALE CONSERVATION

One of the most significant benefits of Sargent Ranch is that it allows us to think big. Much of our work is grounded in landscape-scale conservation, or the process of protecting entire, unfragmented regions over long periods. This way, we can work across property lines and jurisdictions to keep wildlife and ecosystems healthier and connected.  

Sargent Ranch plays a vital role by providing habitat as well as the routes that species like mountain lions and badgers rely on. With protections in place, they can move between the Santa Cruz Mountains, south through the Aromas Hills to the Gabilan Range, and east to the Diablo Range through the Upper Pajaro Valley.

MITIGATING CLIMATE CHANGE

As the climate changes, it’s crucial that we maintain connected habitats. Doing so helps prevent local species from becoming genetically isolated or going locally extinct. And we don’t have much time to spare. Recent research by the California Department of Fish and Wildlife has found that mountain lions in the Santa Cruz Mountains are already isolated and at risk for population decline over time. 

Take it from my colleague, Marian Vernon, who manages POST’s Wildlife Linkages Program. “Protecting apex predators like mountain lions that have an outsized effect on our local food webs helps sustain the health and biodiversity of our entire region,” she explains. “A purchase of this size, in a location as important as this, is extremely rare.”

And it’s not just wildlife who benefit. By helping mitigate the impacts of climate change, protecting Sargent Ranch also safeguards the health, water, safety, and quality of life of the people who live nearby.

WILDLIFE CONSERVATION MEETS PRESERVING SACRED SITES

Sargent Ranch is living proof that we live and work in one of the most biodiverse regions in the world. Myriad species – including those who are federally threatened or proposed threatened – subsist on its grassy, oak-dotted hillsides. These verdant foraging grounds support both golden eagles and northern harriers. A variety of soil types on site also offer excellent habitat for a vast array of plants. The streams, ponds, and wetlands in the valleys are home to California red-legged frogs, California tiger salamanders, northwest pond turtles, and steelhead trout. 

Enhancing and stewarding the property is a triumph for local Indigenous people as well, since so many of the now protected species are culturally important. That’s why this protection story marks a pivotal moment for one of our key partners in this work, the Amah Mutsun Land Trust.

Executive Director Noelle Chambers sums it up beautifully. “The Amah Mutsun Tribal Band [regards] the health of local wildlife populations as a reflection of the health of the landscape as a whole,” she explains. Protecting Juristac shows how wildlife conservation is harmonious with preserving sacred sites and cultural landscapes. In fact, combining these aims leads to more meaningful and effective conservation outcomes.

WHAT’S AHEAD FOR SARGENT RANCH

Conserving this landscape is our top priority. This means that any commercial development plans (like the proposed quarry project) are no longer under consideration. Soon, we will begin studying the property’s environmental and cultural resources. With data in hand, we’ll then map out our approach to long-term stewardship. 

In these efforts, POST is working closely with a variety of partners, including the Amah Mutsun Tribal Band, Amah Mutsun Land Trust, Santa Clara County Parks, the Santa Clara Valley Habitat Agency, Valley Water, the Santa Clara Valley Open Space Authority and the Land Trust of Santa Cruz County, among others.

DECADES OF EFFORTS PAY OFF

Conserving Sargent Ranch is the result of many years of partnerships and hard work, culminating in multiple major land purchases. Most recently, POST protected 2,284 acres on January 28 for $23.04 million. We received support from Valley Water and the Land Trust of Santa Cruz County, with additional funding to come from POST’s generous donors and other partners. Combined with earlier acquisitions in 2024 and 2025, POST has now protected 6,114 acres of the historic ranch. The remaining 480 acres are under contract and expected to be conserved in late 2026.

Taken together, these interrelated transactions comprise the largest land conservation purchase POST has led in its nearly 50-year history. Our ongoing fundraising will continue to support this collaborative work. 

I am deeply grateful to the many organizations, funders, advocates, and donors who joined forces to make it happen. And it’s an exciting road that lies ahead. Of course, conservation work unfolds over slow-but-steady timelines, but POST and our partners are up for the task. I’m eager for the next chapter as we turn our attention to stewardship and the careful, intentional work to come.