The Tijuana River is an intermittent river, 120 mi (195 km) long, on the Pacific coast of northern Baja California in Mexico and southern California in the United States. It drains an arid area along the U.S.Mexico border, flowing through Mexico for most its course then crossing the border for its lower 5 mi (8 km) to empty into the ocean in an estuary on the southern edge of San Diego. Its lower
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Tijuana River National Estuarine Research Reserve, more than 2,500 acres, was officially designated a national wildlife refuge in 1980 and a research reserve in 1982...
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Although known officially, since 1982, as the Tijuana River National Estuarine Research Reserve, old-timers still call it the Slough. Southern California?s largest remaining estuary and wetland, it covers about 2500 acres of wetland and upland habitats, including the Tijuana Slough National Wildlife Refuge and Border Field State Park. Most of the water that drains into the Tijuana River comes from
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