The Tijuana River National Estuarine Research Reserve protects the Tijuana River Estuary on the U.S.–Mexico border, with trails, bird habitat and educational resources.
In this guide, you’ll find the main visitor areas, access details and practical points to check before setting out from Chula Vista. If you’re arriving by air, this guide to getting from San Diego International Airport to Chula Vista covers route options.
- Setting: A coastal wetland on the international border between the United States and Mexico.
- Trails: Four miles of walking trails lead to bird-watching areas and the mouth of the Tijuana River.
- Visitor Center: 301 Caspian Way, Imperial Beach, CA 91932.
- Access: Trail and park conditions can change; check current advisories before you go.
What is the Tijuana River reserve, and where are its visitor areas?
The Tijuana River National Estuarine Research Reserve (TRNERR) protects and manages the Tijuana River Estuary while supporting public access for recreation, education and research. California State Parks describes the estuary as Southern California’s largest coastal wetland.
The reserve’s wetland habitat supports more than 370 species of migratory and native birds, including six endangered species, according to California State Parks. The landscape and wildlife are central to the reserve’s conservation and public-education work.
The Tijuana Estuary Visitor Center is at 301 Caspian Way in Imperial Beach. Border Field State Park is another reserve visitor area, at 1500 Monument Road, San Diego. Its access conditions and hours are seasonal, so plan that stop separately from a visit to the Visitor Center.
What trails and public access points can you use?
The reserve has four miles of walking trails leading to bird-watching areas and the mouth of the Tijuana River. The reserve also promotes hiking, biking, birding and horseback riding, with public programs such as bird walks and nature walks.
For a shorter accessible outing, the North McCoy Trail starts at the Visitor Center and runs one-third mile. The reserve identifies it as its best trail for wheelchairs and strollers, and says its trails, Visitor Center and other experiences are accessible to visitors of all abilities.
At Border Field State Park, the walk from the entrance gate to Monument Mesa is approximately 1.6 miles. The reserve recommends walking west to the beach for 1 mile, then south for 0.6 mile, to avoid seasonal flooding in the road. Check park access before choosing this route.
If you’re planning another local wetland visit, the guide to trails, wildlife and access at San Diego Bay National Wildlife Refuge covers a different protected area.
What can you find at the Visitor Center?
The Visitor Center has hands-on interactive activities and videos, including videos in Spanish shown upon request. It gives you a place to learn about the estuary alongside a walk on the reserve’s trails.
You can find a trail map online, inside the Visitor Center or in the outdoor showcase opposite it. Border Field State Park provides restrooms, picnic areas, barbecues, horse corrals and interpretive displays.
The reserve offers public educational programs, including bird walks, nature walks and educational speakers. Check the reserve’s official information for program details before making plans.
What advisories and conservation rules should you know?
Access at Border Field State Park can change, so check the park’s current status before heading there. The reserve directs visitors to the Border Field State Park page for current closures and access restrictions. Check the official site before you go.
Border Field State Park’s published order closes roads, trails and areas with standing water or mud; trails also close from sunset to 7:00 a.m. The ocean shoreline may be closed to water contact and aquatic recreation because of sewage-contaminated water, even when the beach itself remains open.
The order prohibits fires, glass containers on the beach, feeding wild or feral animals, and drones or other remote-controlled aerial devices. Dogs are allowed only in parking lots and on the park road to Monument Mesa, on a six-foot leash. Camping is not allowed in the reserve, including Border Field State Park.
Border Field’s seasonal hours vary: 9:30 a.m.–6:00 p.m. from the day after Labor Day through October 31; 9:30 a.m.–5:00 p.m. from November 1 through March 14; 9:30 a.m.–6:00 p.m. from March 15 through the day before Memorial Day weekend; and 9:30 a.m.–7:00 p.m. from Memorial Day weekend through Labor Day.
The reserve and California State Parks publish differing Visitor Center schedules, so verify current hours with the official operators.
How do you reach the reserve from Chula Vista?
From Interstate 5, California State Parks directs drivers to take the Coronado Avenue exit in Imperial Beach and continue west, where the road becomes Imperial Beach Boulevard. Turn left onto Third Avenue, then follow the road around to the Visitor Center.
Chula Vista Inn is a hotel in Chula Vista; its rooms at Chula Vista Inn are one accommodation option in the city.
FAQs
How long are the Tijuana River reserve trails?
The reserve has four miles of walking trails. The North McCoy Trail from the Visitor Center is one-third mile and is identified as the best option for wheelchairs and strollers.
Can you camp at Border Field State Park?
No. Camping is not allowed in the reserve, including at Border Field State Park.
Are dogs allowed at Border Field State Park?
Dogs are allowed only in parking lots and on the park road to Monument Mesa, on a six-foot leash.
Where can you get a reserve trail map?
Find a trail map online, inside the Visitor Center or in the outdoor showcase opposite the Visitor Center.