El Horno Creek

Stream map of San Juan Creek watershed with three major tributaries in dark blue, smaller streams in light blue, and cities and towns in orange. El Horno Creek is the creek closest to the San Juan-Trabuco confluence, in light blue, flowing southwards into San Juan Creek.

El Horno Creek or Horno Creek (Spanish: "Oven Creek")^[1] is a tributary stream of San Juan Creek in Orange County in the U.S. state of California. It is approximately 5.9 miles (9.5 km) long and drains an area of 4.3 square miles (11 km²).^[2] The creek joins San Juan Creek on the right bank, only a few hundred yards upstream of the Trabuco Creek confluence, within the city limits of San Juan Capistrano.

The creek begins in the foothills of the Santa Ana Mountains (33°34′02″N 117°37′48″W / 33.5672464°N 117.6300495°W / 33.5672464; -117.6300495), in the mostly residential CDP of Ladera Ranch. The headwaters of the creek were formerly divided into two canyons, but during the development of Ladera Ranch starting in the late 1990s the area was regraded, and the headwaters combined into a single 2.4-mile (3.9 km) channel. The creek flows southwest through a small flood control dam and into San Juan Capistrano, where it crosses under Interstate 5 and turns south, bisecting San Juan Elementary School. Shortly past the school the creek enters an underground concrete channel passing under the I-5/CA 74 interchange and flows into San Juan Creek at (33°29′52″N 117°39′19″W / 33.4978044°N 117.6553283°W / 33.4978044; -117.6553283Coordinates: 33°29′52″N 117°39′19″W / 33.4978044°N 117.6553283°W / 33.4978044; -117.6553283).

Although significant stretches of the creek remain above ground, riparian habitat along the creek remains "sporadic" despite its perennial flow mainly due to pollution from stormwater.^[3]

References

↑ "Horno Creek". Geographic Names Information System. United States Geological Survey. Retrieved 2009-06-15.
↑ "Section 2.2: Physical Environment" (PDF). www.dot.ca.gov. Retrieved 2009-06-15.
↑ "San Juan Creek Watershed Management Study: Feasibility Phase" (PDF). U.S. Army Corps of Engineers. www.ocwatersheds.com. August 2002. Retrieved 2009-06-15.

Rivers of Orange County, California

San Gabriel River watershed	Brea Creek Coyote Creek Carbon Creek Fullerton Creek Imperial Creek Moody Creek North Fork Coyote Creek

Santa Ana River watershed	Black Star Canyon Blind Canyon Fremont Canyon Handy Creek Harding Canyon Limestone Canyon Modjeska Canyon Santiago Creek Silverado Canyon Weir Canyon Williams Canyon

Newport Bay watershed	Agua Chinon Creek Bee Canyon Creek Santa Ana-Delhi Channel Bonita Creek Marshburn Channel La Cañada Creek Peters Canyon Wash San Diego Creek San Joaquin Wash Sand Canyon Wash Serrano Creek

Aliso Creek tributaries	Aliso Hills Channel Dairy Fork English Canyon Creek Munger Creek Sulphur Creek Wood Canyon Creek

San Juan Creek watershed	Bell Canyon Cañada Gobernadora Cold Springs Creek El Horno Creek Falls Canyon Creek Hickey Creek Holy Jim Creek Hot Springs Creek Live Oak Canyon Creek Lucas Canyon Creek Morrell Canyon Creek Oso Creek Tijeras Canyon Creek Trabuco Creek Trampas Canyon

Other	Bolsa Chica Channel Buck Gully Muddy Creek Prima Deshecha Cañada Salt Creek Segunda Deshecha Cañada Talbert Channel

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