San Dimas Dam

Rancho San Jose was a 22,340-acre (90.4 km2) Mexican land grant in northeastern Los Angeles County given in 1837 by Governor Juan Bautista Alvarado to Ygnacio Palomares and Ricardo Véjar. Today, the communities of Pomona, LaVerne, San Dimas, Diamond Bar, Azusa, Covina, Walnut, Glendora, and Claremont are located in whole or part on land that was once part of the Rancho San Jose.

Big Dalton Dam is a multiple arch concrete dam in Los Angeles County, California, built for the Los Angeles County Flood Control District and completed in August 1929. The dam is one of the earliest of the multiple arch "double-wall" buttress designs of engineer Fred A. Noetzli. The 991 acre-foot (1.2 million cubic meter) dam provides water conservation and controls flooding from Big Dalton Canyon, a watershed within the San Dimas Experimental Forest, part of the Angeles National Forest in the San Gabriel Mountains. It is about 4 miles northeast of the city of Glendora and is operated by the Los Angeles County Department of Public Works.

La Verne is a city in Los Angeles County, California, United States. The population was 31,334 at the 2020 census.

Lutheran High School La Verne (also known as Faith Lutheran), was a private, college preparatory Lutheran High School in La Verne, California. Affiliated with the Lutheran Church–Missouri Synod (LCMS), the school served students from the San Gabriel, Pomona, and Inland valleys. Built on a foundation of faith in Christ, the school provided college preparatory curriculum to a co-educational student population in grades nine through twelve. The school colors were red, white and blue and the mascot was the Trojans. One special feature of the program at Lutheran High School was its Naval Junior Reserve Officer Training Corps program, which enrolled over 20% of the student population annually. It was one of only five NJROTC units in the United States that are available in a private school. Because of the achievements of the NJROTC Unit at Lutheran High School, the U.S. Navy rated LHS as an honor distinguished unit. NJROTC Scholarships were available for college-bound students. Enrollment at the school started to decline in 2000, and by 2023, the school was facing foreclosure. In 2020, the Pacific Southwest District of the LCMS gave financial support and worked with consultants from NextEd to determine the school's future viability. The results of that study led the school's board to announce the closure of the school after the 2022–23 school year.

The 1990 Upland earthquake occurred at 15:43:37 local time on February 28 with a moment magnitude of 5.7 and a maximum Mercalli Intensity of VII (Very strong). This left-lateral strike-slip earthquake occurred west of the San Andreas Fault System and injured thirty people, with total losses of $12.7 million. Many strong motion instruments captured the event, with an unexpectedly high value seen on water tank near the epicentral area.

The Webb Schools is the collective name for two private schools for grades 9–12, founded by Thompson Webb, located in Claremont, California. The Webb School of California for boys was established in 1922, and the Vivian Webb School for girls in 1981. Both are primarily boarding schools, but they also enroll a limited number of day students. The Raymond M. Alf Museum of Paleontology is a part of The Webb Schools. The schools share a campus of approximately 150 acres (610,000 m2) in the foothills of the San Gabriel Mountains. In 2018, Webb purchased undeveloped land next to the existing campus and will now preserve the hillside and create a buffer between the campus and suburban development. There are 410 students and 57 faculty members, of which 25% hold doctorates, 80% hold advanced degrees and 74% live on campus (as of the 2018-2019 school year). Annual tuition (as of the 2019-2020 school year) is $66,130 for boarding students and $47,035 for day students, including meals, books, and fees. For the 2019–20 school year, Webb offered $5.5 million in need-based aid to 35 percent of the families, with awards ranging from several thousand dollars to nearly the full cost of tuition. The majority of ninth- and tenth-grade classes are taught in a single-sex environment. Co-educational courses are introduced to upperclassmen.The official student newspaper of The Webb Schools is the Webb Canyon Chronicle.

The San Dimas Biosphere Reserve and Experimental Forest is an experimental forest located in the front range of the San Gabriel Mountains of southern California. San Dimas constitutes a protected field laboratory jointly managed by the Angeles National Forest and the Pacific Southwest Research Station of the United States Forest Service under the designation San Dimas Experimental Forest. It was designated as a UNESCO Biosphere Reserve in 1976 and withdrawn from the programme in July 2018.It encompasses the upper Big Dalton and San Dimas watersheds. The 6,495 hectares (25.08 sq mi) experimental forest was originally established in 1933 and was designated as a biosphere reserve in 1976.San Dimas is a chaparral-dominated Mediterranean ecosystem. In addition to the chaparral vegetation (including chamise), riparian woodland, sage-buckwheat and barren areas, oak woodland and open yellow pine woodlands are represented. The Fern Canyon Research Natural Area is in the remote eastern part the San Dimas reserve. This 555 hectares (2.14 sq mi) Research Natural Area includes Brown's Flat, a locally unique mountain meadow that supports a relict grove of ponderosa pine (Pinus ponderosa Douglas ex C. Lawson).In addition to Fern Canyon, the reserve's research facilities include over 50 gauged watersheds, a lysimeter complex, two major dams and reservoirs—San Dimas Dam and Big Dalton Dam—and three plantations of domestic and introduced trees.Studies at San Dimas have provided valuable information on air pollution, fire effects, erosion, hydrology, and plants and animals in southern California watersheds. The area also provides opportunities for ecological research to many nearby colleges, universities and governmental agencies.Wildfires have frequently burned through the San Dimas area, most recently when the Williams Fire burned much of the forest in September 2002.The forest is currently closed for the general public, except under special written permit. No hunting or other recreational activities are currently allowed.

Bonita High School is a high school located in the city of La Verne, California in the foothills of the San Gabriel Mountains. Opened in 1903, it was the first high school in the Bonita Unified School District. It moved to its current campus in 1959. The majority of its students come from Ramona Middle School, which is also located in La Verne. The Bearcat athletic teams compete in the Palomares League of the CIF Southern Section.

Damien High School is an all-boys Roman Catholic high school in La Verne, in the U.S. state of California, named for Saint Damien of Molokai. It is located in and operated by the Roman Catholic Archdiocese of Los Angeles, part of the tri-school community including St. Lucy's Priory High School and Pomona Catholic High School.

California 26th congressional district is a congressional district in the U.S. state of California currently represented by Democrat Julia Brownley. The district is located on the South Coast, comprising most of Ventura County as well as a small portion of Los Angeles County. Cities in the district include Camarillo, Oxnard, Santa Paula, Thousand Oaks, Westlake Village, Moorpark, and part of Simi Valley. In 2022, the district lost Ojai and most of Ventura and added Calabasas, Agoura Hills, and the sparsely populated northern half of Ventura County.From 2003 to 2013, the district spanned the foothills of the San Gabriel Valley from La Cañada Flintridge to Rancho Cucamonga. David Dreier, a Republican, represented the district during this period.

City of Knowledge Islamic School is an Islamic K-12 school in Pomona, California.It was established in 1994, with 19 students, by Iraqi immigrants in the Los Angeles area who wanted to preserve Islamic customs among their youth. By 1998 the school had 150 students. That year the school had intentions of creating a gymnasium, a theater, and a center for student assembly. Western Association of Schools and Colleges began accrediting it in 2001.The Assadiq Foundation is associated with the school.

The San Dimas Hotel, also known as Walker House, the Carruthers Home, and the San Dimas Mansion, is a historic structure in San Dimas, California, built by the San Jose Ranch Company in 1887. Originally built as a hotel, the 15,000-square-foot (1,400 m2) structure had 33 rooms and 14 fireplaces. The hotel was built in anticipation of a land boom that never happened, and it never had a paying guest. In 1889, the property was sold to James W. and Sue Walker for $25,000. After being occupied by seven generations of Walkers, the property was turned into a restaurant in 1979. The building became vacant in 1997 and was later acquired and renovated by the City of San Dimas. It was listed on the National Register of Historic Places in 1972.