Border Field State Park

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Border Field State Park
Border Field State Park (16034475811).jpg
Border Field State Park sign
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Location San Diego County, California, United States
Nearest city Imperial Beach, California
Coordinates 32°32′4″N117°7′22″W / 32.53444°N 117.12278°W / 32.53444; -117.12278 Coordinates: 32°32′4″N117°7′22″W / 32.53444°N 117.12278°W / 32.53444; -117.12278
Area1,316 acres (5.33 km2)
Visitors62,000 [1] (in FY 2014/2015)
Governing body California Department of Parks and Recreation

Border Field State Park is a state park of California, United States, containing beach and coastal habitat on the Mexico–United States border. The park is within the city limits of Imperial Beach in San Diego County, next to the suburb of Playas de Tijuana in Mexico. It contains the southernmost point in the state of California. [2] The refuge forms the southern part of the Tijuana River National Estuarine Research Reserve.


Border Field State Park contains International Friendship Park, which is just inland from the place where the border meets the ocean. Immediately adjacent is the monument marking the Initial Point of Boundary Between U.S. and Mexico.


The Treaty of Guadalupe Hidalgo was concluded on February 2, 1848, officially ending the war between the United States and Mexico. It provided that the new international border between the two countries be established by a joint United States and Mexican Boundary Survey. The commission began its survey at Border Field. During World War II it was base for Border Naval Outlying Landing Field [2] [3] [4] [5]


The Tijuana River National Estuarine Research Reserve contains much of Border Field State Park and is an important wildlife habitat. The salt and freshwater marshes give refuge to migrating waterfowl and resident wading birds, such as black-necked stilt, American avocet, green-winged teal, American wigeon and pelicans. The park offers hiking, horse trails, surf fishing and birding. [2]


For fiscal year 2014–2015 61,799 people visited the Border Field State Park, [1] up from 45,633 in FY 2011–2012. [6]

To the East:
San Ysidro
California State Beaches To the South

See also

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Tijuana River Estuary

The Tijuana River Estuary is an intertidal coastal wetland at the mouth of the Tijuana River in San Diego County, California, in the United States bordering Tijuana, Baja California, Mexico. It is the location of the Tijuana River National Estuarine Research Reserve, Tijuana Slough National Wildlife Refuge, and Border Field State Park. The estuary is a shallow water habitat. Often termed an intermittent estuary since its volume is subject to the discharge controlled by the seasons of the year, the volume of the estuary fluctuates and at times there is dry land, or flooded areas. It was designated a National Natural Landmark in 1973.

Friendship Park is a half-acre binational park located along the United States-Mexico border in the San Diego–Tijuana region. Located within the larger Border Field State Park in California's San Diego county, the park includes the border fence dividing the two countries where residents of both countries can meet in person. On the U.S. side, the park used to be part of the Monument Mesa picnic area but is now wholly located on federal property under the Department of Homeland Security and is heavily monitored by U.S. Border Patrols 24 hours a day. To the south of this place is the Playas de Tijuana, Baja California.

Tijuana River Mouth State Marine Conservation Area (SMCA) is a marine protected area that extends offshore of southern San Diego County on California’s south coast. The SMCA covers 2.91 square miles.

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Smugglers Gulch Canyon located in the U.S. state of California and the Mexican state of Baja California

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  1. 1 2 "California State Park System Statistical Report 2014/15 Fiscal Year" (PDF). Statewide Planning Unit Planning Division California State Parks. pp. 32–33. Retrieved June 6, 2016.
  2. 1 2 3 "Border Field SP". California State Parks. Retrieved 2011-10-02.
  3. Abandoned & Little-Known Airfields: California - Southern San Diego area
  4. Military Bases in the South Bay
  5. Van Wormer, Stephen R. "A Land Use History of the Tia Juana River Valley," California State Parks, Southern Service Center, June 2005.
  6. "California State Park System Statistical Report 2011/12 Fiscal Year" (PDF). Statewide Planning Unit Planning Division California State Parks. pp. 28–29. Archived from the original (PDF) on June 19, 2014. Retrieved June 18, 2014.