Irvine Ranch Natural Landmarks

The Frank R. Bowerman Landfill is a landfill in the western Santa Ana Mountains, in Orange County, California. It opened in 1990. The landfill is located between Limestone Canyon Regional Park and State Route 241.It is one of the largest landfills in California and the ninth largest in the United States. It contains an estimated 31 million tons of waste.

The Santiago Fire was a wildfire located near Santiago Canyon in Orange County, California, U.S., and one of thirty California wildfires of October 2007. The fire was intentionally started.

Santiago Canyon is a canyon and unincorporated community in Orange County, California. According to the 2000 census, Santiago Canyon has several hundred residents living within its borders. Trabuco Canyon, Silverado Canyon, Modjeska Canyon and Williams Canyon are tributaries of Santiago Canyon. Santiago Creek flows northwest from the canyon, then west into the Santa Ana River. Neighborhoods in Santiago Canyon include Santiago Canyon Estates and Falcon View Estates. The landmark Cook's Corner motorcycle restaurant is also located within Santiago Canyon. The ZIP Code is 92676, and the community is in area code 949.

California's 45th congressional district is a congressional district in the U.S. state of California. Katie Porter, a Democrat, has represented the district since January 2019. She is the first Democrat to do so. The district is based in Orange County and includes all of Irvine, Tustin, North Tustin, Villa Park, Laguna Hills, Lake Forest, and Rancho Santa Margarita, as well as parts of Anaheim, Orange, Laguna Woods, Mission Viejo, and Trabuco Canyon.

Black Star Canyon is a remote mountain canyon in the Santa Ana Mountains, located in eastern Orange County, California. It is a watershed of the Santa Ana River. Black Star Canyon is a popular destination for mountain bikers as well as hikers due to its wild scenery. The California Historical Landmark associated with the canyon refers to the village of Puhú.

The Silverado Fire was a wildfire that burned in October and November 2020 in southern Orange County, California northeast of Irvine. The fire started on October 26 around 6:47 AM near Orange County Route S-18 (Santiago Canyon Road) and Silverado Canyon Road, fueled by strong Santa Ana winds gusting up to 80 miles per hour (130 km/h) and low humidity. Orange County Fire Authority Chief Brian Fennessy stated, "The winds were extraordinary even by Santa Ana standards. Fire spread is exceeding more than anything I've seen in my 44 years." The fire initially moved south from Loma Ridge toward the Orchard Hills, Northwood and Portola Springs communities of Irvine before moving southeast through Limestone Canyon and toward the communities of Foothill Ranch and Lake Forest. The fire burned in a path similar to that taken by the 2007 Santiago Fire, mostly through terrain that had not seen significant burning in the 13 years since that fire. 100% containment was announced on November 7, 2020. The cause of the fire remains under investigation. Southern California Edison officials stated in a letter to the California Public Utilities Commission that they suspect a "lashing wire" in one of their telecommunication lines may have caused the fire.

Carbondale, in Orange County, California, is a historical coal mining town in Santiago Canyon, where Santiago Creek had its confluence with Silverado Creek in Silverado, California. It had a post office from May 11, 1881, to January 29, 1884, when it was closed and mail sent to the Santa Ana post office.Coal was discovered near Santiago Creek in 1878. A coal mine was established there, called the Santa Clara. In 1881, the Southern Pacific took over the Santa Clara Coal Mine, and a mining camp, Carbondale, with a post office was established on the flat near the creek. Besides the post office, it had a hotel, saloons, a store, and shacks for the miners. Carbondale became the post office for Silverado after its post office was closed on January 22, 1883. When the coal was depleted, the coal mine was closed down in 1884. Carbondale's post office closed, and its buildings and equipment were removed, leaving few other remains.

Crean Lutheran High School is a private Lutheran high school in Irvine, California. The school was founded in 2007 as Lutheran South High School and had its initial campus at St. Paul's Greek Orthodox Church in the Woodbridge neighborhood of Irvine. In 2010, Crean Lutheran opened its own campus in southeastern Irvine near the Woodbury neighborhood. The school was renamed after John and Donna Crean, local philanthropists who donated US$10,000,000 to the school in its first year.Crean Lutheran is accredited by the Western Association of Schools and Colleges as well as the National Lutheran Schools Accreditation. The school self-reports that its students test 23% higher than the national average on standardized testing.

Foothill Ranch is a master planned community in Orange County, California, United States. The population was 10,899 at the 2000 census. Foothill Ranch was incorporated into the city of Lake Forest, California, in 2000. Prior to that, it was a census-designated place. Foothill Ranch is notable for companies such as Oakley, Inc., Nike, Kaiser Aluminum, Kawasaki, Hampton Products/Brinks, TAE Technologies, Viking Technology, Image Options and ProBoards. It is also the home of Saddleback Church.

Irvine Lake is a reservoir in Orange County, California, United States. It is on Santiago Creek, located in Silverado, California, east of the city of Irvine and close to Irvine Regional Park. The reservoir is currently operated by the Serrano Water District and OC Parks. Access to the lake is via Santiago Canyon Road, the road leading from Orange to Silverado. The Cleveland National Forest is on the northeast side of the lake.