UC Irvine Ecological Preserve

This 62-acre site sits right on the southern edge of the University of California, Irvine, campus. In addition to offering epic views and opportunities for exploration, this open space is crucial for research and education.

Park Information

University of California, Irvine campus

Irvine, CA

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acres of the Reserve's protected land

226

species of vascular plants

acres of prickly pear cactus restoration

More about the UC Irvine Ecological Preserve

The UCI Ecological Preserve may be the smallest open space in the Nature Reserve of Orange County, but its biodiversity is just as robust as some of NROC’s biggest parks. That’s what makes this unique piece of land so special, and its affiliation with an institute of higher learning means it’s been the site of numerous research projects and PhD theses. Coastal sage scrub is the prevailing habitat, and you’ll find lots of prickly pear cactus, so keep your eyes peeled for the cactus wrens who love to nest in them.

It’s also host to a number of different microhabitats, and if you visit in the spring, you can set your sights on some unique wildflower blooms. The sweeping panoramic views, however, are stunning year-round. The open space is situated between the San Joaquin Corridor and the UCI campus, which inspires extra appreciation for this expanse of nature in the midst of modern urban life. Especially since it acts as a key piece of habitat along the Bonita Canyon Corridor, which allows wildlife—including coyotes and gnatcatchers—to move between the Preserve, Newport Beach’s back bay, and Laguna.

Choose your own adventure: UCI Ecological Preserve's got the nature. How do you want to enjoy it?

Get wild! But do it respectfully.

: Expect the unexpected on your adventure. Tell a friend or family member where you are going and what time you plan to return, keep an eye on local weather reports, bring plenty of water, and carry emergency essentials with you. Some areas of the NROC do not have cell service, so you may not be able to rely on your smartphone for routing or communication. It’s smart to have a warm layer, rain jacket, and headlamp in your pack, along with means to stay hydrated and fueled beyond what you expect you’ll need, especially in the more remote areas of the Reserve.
: Each park within the NROC has its own activities, hours, and guidelines, all rooted in respect for the land. Before you visit, check out their site so there are no surprises.
: Nurturing the beauty of this nature is a communal effort—love your wild by taking nothing from the Reserve and leave no trace behind.
: You are bound to see some exciting wildlife on the Reserve, and we do mean wild. Respecting the animals’ space will ensure your safety and theirs.
: Though encountering them is rare, some larger or venomous animals could be threatening—the best thing to do is stay calm and be prepared. If you encounter a mountain lion, maintain eye contact, speak firmly, make yourself look larger, and slowly back away—do not crouch or run. If you see a snake on the trail, stop and give it space—most bites happen when people try to move or handle snakes. Walk around from a safe distance.

Ticks are also a natural part of Orange County’s wildlands, especially in grassy or brushy areas. Stay on designated trails, wear long sleeves and pants, and do a tick check after your hike. A little awareness goes a long way!
: We’ve got hundreds of miles of established trails—staying on them ensures your safety and minimizes disruption of the incredible habitats you’re exploring.
: E-bikes are great for urban settings. And hugely destructive for natural spaces. To ensure our habitats’ survival, e-bikes are not permitted on the Reserve.
: We love dogs, but even leashed pets disrupt natural habitats. Help us keep the Reserve’s ecosystems in balance by either leaving your dog(s) at home or making sure you bring them to a dog-friendly area of the Reserve. Find out more about the parks that welcome pets here.
: Take a few deep breaths instead! This safeguards the health of other visitors, prevents waste and wildfires, and protects our plant and animal life from pollution.