Black Star Canyon

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.

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.

The Irvine Ranch Natural Landmarks (also known collectively as Irvine Ranch Open Space) are a collection of protected areas in Orange County, California in and around Irvine. They encompass almost 50,000 acres (20,000 ha) of land which was once a part of the Irvine Ranch owned by the Irvine Company. Almost 40,000 acres (16,000 ha) of the landmarks were designated a National Natural Landmark in 2006 and a California Natural Landmark in 2008.Irvine Ranch contains a remarkably complete stratigraphic succession ranging in age from late Cretaceous (80 million years ago) to the present. The primary biological features at the site include coastal sage scrub and chaparral communities, including rare Tecate cypress woodlands.

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.

The Bond Fire was a wildfire that burned 6,686 acres (2,706 ha) in the Santiago Canyon area of Orange County, California in December 2020. The fire caused evacuations of 25,000 residents and injured 2 firefighters. The fire was very close to the burn scar of the Silverado Fire, which took place in October 2020.

Silverado is an unincorporated community in Silverado Canyon, which is located in the Santa Ana Mountains in eastern Orange County, California. Portions of the town sit on a former Mexican land grant Rancho Lomas de Santiago. Silverado is located at the boundaries of Cleveland National Forest. The site is a California Historical Landmark,

Santiago Dam (also known as Santiago Creek Dam) is an earth/rockfill dam across Santiago Creek in Orange County, in the U.S. state of California, forming Irvine Lake. The 136-foot (41 m) earth dam and its reservoir serve for flood control and recreational purposes. It lies upstream (southeast) from the city of Orange and north of Irvine. Irvine Lake is the largest body of fresh water entirely in Orange County.

The Santiago Canyon Fire of 1889 (previously called the Great Fire of 1889) was a massive wildfire in California, which burned large parts of Orange County, Riverside County, and San Diego County during the last week of September 1889. The fire reportedly started in Fremont Canyon, a canyon close to what today is Irvine Lake. Until 2018, it was possibly the single largest wildfire in the recorded history of California, with at least 300,000 acres (1,200 km2) of land burned. In mid-August 2018, the Ranch Fire in the Mendocino Complex Fire surpassed the Santiago Canyon Fire's assumed acreage.Assistant Regional Forester (USFS) L.A. Barrett, who wrote a 1935 report on California wildfires, said of it: "I was living in Orange County at the time and well remember the great fire reported herein from September 24 to 26. Nothing like it occurred in California since the National Forests have been administered. In fact in my 33 years in the Service I have never seen a forest or brush fire to equal it. This one covered an enormous scope of country and burned very rapidly."Conditions leading up to the 1889 fire included a much longer and more severe annual drought than usual, with rains largely ceasing in March and less than 0.4 inches (1 cm) of precipitation being recorded for the 5½ months prior (records from the National Archives). This was coupled with multiple katabatic wind events (known as “northers” or Santa Anas) that month, one of which occurred about 10 days prior and likely added to the dryness of fuels. Temperatures during the week prior remained high and were coupled with several severe fires in San Diego County in which “at least 10,000 acres [40 km2] have burned over, a dwelling house consumed and other property destroyed”.

Williams Canyon is a census-designated place (CDP) in the canyon of the same name in Orange County, California, United States. It is located in eastern Orange County on the western side of the Santa Ana Mountains, south of Silverado and north of Modjeska. Most of the community is within Cleveland National Forest. It was first listed as a CDP prior to the 2020 census.

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.