Contents 1 Geography 2 Geology 3 Climate 4 Flora and fauna 5 Human use 6 References 7 External links

Geography[edit] The range extends for approximately 30 mi (50 km) from the San Bernardino Mountains southeast to the Santa Rosa Mountains. The San Jacinto Mountains are the northernmost of the Peninsular Ranges, which run 1,500 km (930 mi) from Southern California to the southern tip of the Baja California Peninsula. The highest peak in the range is San Jacinto Peak (3,302 m; 10,834 ft) NAVD 88,[3] and the range is also a Great Basin Divide landform for the Salton Watershed to the east. San Jacinto mountains as viewed from the north, when approaching the gateway to Palm Springs, California on highway 62 . The Coachella Valley stretches along the eastern side of the range, including the cities of Palm Springs and Rancho Mirage. San Gorgonio Pass separates the range from Mount San Gorgonio to the north. The western slope holds the community of Idyllwild. The range is the eastern boundary of the San Jacinto Valley, location of Hemet; it also marks the eastern edge of the fast-growing Inland Empire region and Greater Los Angeles as a whole. Much of the range is embraced by the Santa Rosa and San Jacinto Mountains National Monument created in 2000. Mount San Jacinto State Park is located along the flank of San Jacinto Peak. Part of the eastern flank of the range is located within the Agua Caliente Indian Reservation. In 1990 the California Legislature created the Coachella Valley Mountains Conservancy to protect the mountains surrounding the valley.

Geology[edit] The range is a fault block of granitic rocks squeezed between the San Jacinto fault on the west and the San Andreas fault system on the east. The fault scarp on the northern and eastern side is one of the most abrupt in North America, going from sea level to 10,000 feet in a few miles. The height and steepness of the range points out that the San Jacinto fault and San Andreas fault are very active and very capable of producing major earthquakes (well in excess of magnitude 7). The last massive quake struck the southern segment of the San Andreas-San Jacinto fault complex more than 200 years ago, so the area is probably overdue for a major earthquake, although it is impossible to pinpoint the date. Rock slides from the range are possible during major earthquakes in the future, as they have been in the past. These slides may potentially impact the communities built directly adjacent to the steep escarpment on the desert side of the range.

Climate[edit] The San Jacinto Mountains, like the neighboring San Bernardino Mountains, are a humid island above the surrounding desert and semi-desert. Annual precipitation ranges from about 15 inches at the western base (and only 6 inches on the eastern, desert base) to as much as 30 inches above 5,500 feet (the mountain town of Idyllwild averages 27 inches per year). The coastal (western) side of the range receives more precipitation than the eastern (desert) side. Most of the precipitation falls between November and March, with a secondary maximum associated with thunderstorms during the summer monsoon season between July and September. The precipitation totals are highly variable from year to year. Snow usually falls above 4,000 feet elevation in winter. Above 8,000 feet, snow sometimes persists until June. Near the crest, there are often a few patches of snow that may persist all year in shady spots.

Flora and fauna[edit] North slope of San Jacinto Peak The range can be thought of as a sky island, as it contains numerous species of flora and fauna that cannot tolerate the triple-digit-Fahrenheit heat of the surrounding valleys. Vegetation found on the mountain flanks is strongly influenced by elevation and climate. Near the valley floor, conditions are often arid and hot, limiting the vegetative palette to species that are adapted to such conditions.[4] At lower elevations forestation of the San Jacinto Mountains includes considerable California black oak associated with Coulter pine.[5] At higher elevations, forests include Ponderosa pine, Jeffrey pine, Lodgepole pine, Incense cedar, White fir, Red fir, and deciduous oak. There is also a grove of over 150 Giant Sequoia Trees on the northeast facing slope. The sequoias (native to the Sierra Nevada Mountains) were planted by the U.S. Forest Service in the 1970s, and are now apparently healthy and producing seedlings. [6] As in many other western U.S areas, bark beetle infestations have caused loss of some of the forest trees in recent years, especially during droughts. Wildfires have also temporarily denuded some areas.

Human use[edit] Idyllwild, Pine Cove, Mountain Center, and Pinyon Pines are located in the San Jacinto Mountains. The indigenous Cahuilla live in the deserts around the San Jacinto Mountains and used the range for hunting, foraging, and to escape the summer heat. The range was a frequent subject for Palm Springs artists Carl Eytel (1862–1925) and Paul Grimm (1892–1974). Hollywood film directors have used the mountains to shoot film scenes. In Frank Capra's 1937 film, Lost Horizon, the Tahquitz Falls in Tahquitz Canyon was used as a scene.[7] Today, the range is a destination for outdoor recreation. The Pacific Crest Trail runs along the spine of the range. A popular walking route runs from the Palm Springs Aerial Tramway Mountain Station above Palm Springs, to the high point of the range, with a relatively mild climb of 2,400 ft (700 m) compared to other routes with more elevation gain. Above Idyllwild is historic Tahquitz Peak and other rock climbing areas.

References[edit] ^ Munro, P., et al. A Mojave Dictionary. Los Angeles: UCLA. 1992. ^ "San Jacinto Mountains". Geographic Names Information System. United States Geological Survey. Retrieved 2009-05-03.  ^ "San Jacinto". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2012-11-30.  ^ University of California Publications in Botany, Published by University of California Press, Berkeley, Ca., 1903, Item notes: v.1 (1902–1903) ^ C. Michael Hogan (2008) Quercus kelloggii,, ed. Nicklas Stromberg [1] ^ ^ Lost Horizon at the American Film Institute Catalog Robinson, John W.; Risher, Bruce D.; Bakker, Elna (1993). The San Jacintos: The Mountain Country from Banning to Borrego Valley. Arcadia, CA: Big Santa Ana Historical Society. p. 252. ISBN 0-9615421-6-0. 

External links[edit] Wikimedia Commons has media related to San Jacinto Mountains. Inland Empire portal BLM: Santa Rosa and San Jacinto Mountains National Monument v t e Inland Empire Counties Riverside San Bernardino Major cities Riverside San Bernardino Cities and towns 100k+ Corona Fontana Moreno Valley Murrieta Ontario Rancho Cucamonga Temecula Victorville Cities and towns 25k–100k Apple Valley Banning Beaumont Cathedral City Chino Chino Hills Coachella Colton Desert Hot Springs Eastvale Hemet Hesperia Highland Indio Jurupa Valley Lake Elsinore Menifee Montclair Norco Palm Desert Palm Springs Perris Redlands Rialto Rubidoux San Jacinto Twentynine Palms Upland Valle Vista Wildomar Yucaipa Cities and towns 10k–25k Adelanto Barstow Big Bear City Bloomington Blythe Cabazon Canyon Lake Crestline Glen Avon Grand Terrace La Quinta Loma Linda Mira Loma Pedley Rancho Mirage Twentynine Palms Yucca Valley Cities and towns under 10k Big Bear Lake Calimesa Devore El Cerrito Oak Glen Highgrove Home Gardens Indian Wells Joshua Tree Lake Arrowhead Landers Mentone Muscoy Needles Romoland San Antonio Heights Sunnyslope Wrightwood Woodcrest Regions Coachella Valley Cucamonga Valley Elsinore Trough High Desert Morongo Basin Perris Plain Plains of Leon San Bernardino Mountains San Bernardino Valley San Jacinto Mountains San Jacinto Valley Santa Ana Mountains Temescal Mountains Victor Valley Retrieved from "" Categories: San Jacinto MountainsMountain ranges of Southern CaliforniaMountain ranges of Riverside County, CaliforniaPeninsular RangesGeology of Riverside County, CaliforniaHidden categories: Coordinates on Wikidata

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Hemet, CaliforniaSan Jacinto PeakSummitRiverside County, CaliforniaGeographic Coordinate SystemGeographic Coordinate SystemTopographic MapUSGSMojave LanguageMountain RangeRiverside County, CaliforniaLos Angeles, CaliforniaCaliforniaUnited StatesDominican OrderHyacinth Of PolandPatronLatin AmericaSan Bernardino MountainsSanta Rosa Mountains (California)Peninsular RangesSouthern CaliforniaBaja California PeninsulaSan Jacinto PeakNorth American Vertical Datum Of 1988Great Basin DivideSalton SeaEnlargePalm Springs, CaliforniaHighway 62Coachella ValleyPalm Springs, CaliforniaRancho Mirage, CaliforniaSan Gorgonio PassMount San GorgonioIdyllwild, CaliforniaSan Jacinto ValleyHemet, CaliforniaInland Empire (California)Greater Los Angeles AreaSanta Rosa And San Jacinto Mountains National MonumentMount San Jacinto State ParkAgua Caliente Indian ReservationCalifornia LegislatureCoachella Valley Mountains ConservancyFault BlockFault ScarpEnlargeSky IslandCalifornia Black OakCoulter PinePonderosa PineJeffrey PineLodgepole PineIncense CedarWhite FirRed FirSequoiadendron GiganteumIdyllwildPine CoveMountain Center, CaliforniaPinyon Pines, CaliforniaCahuilla PeopleCarl EytelPaul A. GrimmFrank CapraLost Horizon (1937 Film)Tahquitz FallsTahquitz CanyonPacific Crest TrailPalm Springs Aerial TramwayTahquitz PeakRock ClimbingGeographic Names Information SystemUnited States Geological SurveyU.S. National Geodetic SurveyAFI Catalog Of Feature FilmsInternational Standard Book NumberSpecial:BookSources/0-9615421-6-0Portal:Inland EmpireTemplate:Inland EmpireTemplate Talk:Inland EmpireInland EmpireRiverside County, CaliforniaSan Bernardino County, CaliforniaRiverside, CaliforniaSan Bernardino, CaliforniaCorona, CaliforniaFontana, CaliforniaMoreno Valley, CaliforniaMurrieta, CaliforniaOntario, CaliforniaRancho Cucamonga, CaliforniaTemecula, CaliforniaVictorville, CaliforniaApple Valley, CaliforniaBanning, CaliforniaBeaumont, CaliforniaCathedral City, CaliforniaChino, CaliforniaChino Hills, CaliforniaCoachella, CaliforniaColton, CaliforniaDesert Hot Springs, CaliforniaEastvale, CaliforniaHemet, CaliforniaHesperia, CaliforniaHighland, CaliforniaIndio, CaliforniaJurupa Valley, CaliforniaLake Elsinore, CaliforniaMenifee, CaliforniaMontclair, CaliforniaNorco, CaliforniaPalm Desert, CaliforniaPalm Springs, CaliforniaPerris, CaliforniaRedlands, CaliforniaRialto, CaliforniaRubidoux, CaliforniaSan Jacinto, CaliforniaTwentynine Palms, CaliforniaUpland, CaliforniaValle Vista, CaliforniaWildomar, CaliforniaYucaipa, CaliforniaAdelanto, CaliforniaBarstow, CaliforniaBig Bear City, CaliforniaBloomington, CaliforniaBlythe, CaliforniaCabazon, CaliforniaCanyon Lake, CaliforniaCrestline, CaliforniaGlen Avon, CaliforniaGrand Terrace, CaliforniaLa Quinta, CaliforniaLoma Linda, CaliforniaMira Loma, CaliforniaPedley, CaliforniaRancho Mirage, CaliforniaTwentynine Palms, CaliforniaYucca Valley, CaliforniaBig Bear Lake, CaliforniaCalimesa, CaliforniaDevore, CaliforniaEl Cerrito, Riverside County, CaliforniaOak Glen, San Bernardino County, CaliforniaHighgrove, CaliforniaHome Gardens, CaliforniaIndian Wells, CaliforniaJoshua Tree, CaliforniaLake Arrowhead, CaliforniaLanders, CaliforniaMentone, CaliforniaMuscoy, CaliforniaNeedles, CaliforniaRomoland, CaliforniaSan Antonio Heights, CaliforniaSunnyslope, CaliforniaWrightwood, CaliforniaWoodcrest, CaliforniaCoachella ValleyCucamonga ValleyElsinore TroughHigh Desert (California)Morongo BasinPerris BlockPlains Of LeonSan Bernardino MountainsSan Bernardino ValleySan Jacinto ValleySanta Ana MountainsTemescal MountainsVictor ValleyHelp:CategoryCategory:San Jacinto MountainsCategory:Mountain Ranges Of Southern CaliforniaCategory:Mountain Ranges Of Riverside County, CaliforniaCategory:Peninsular RangesCategory:Geology Of Riverside County, CaliforniaCategory:Coordinates On WikidataDiscussion About Edits From This IP Address [n]A List Of Edits Made From This IP Address [y]View The Content Page [c]Discussion About The Content Page [t]Edit This Page [e]Visit The Main Page [z]Guides To Browsing WikipediaFeatured Content – The Best Of WikipediaFind Background Information On Current EventsLoad A Random Article [x]Guidance On How To Use And Edit WikipediaFind Out About WikipediaAbout The Project, What You Can Do, Where To Find ThingsA List Of Recent Changes In The Wiki [r]List Of All English Wikipedia Pages Containing Links To This Page [j]Recent Changes In Pages Linked From This Page [k]Upload Files [u]A List Of All Special Pages [q]Wikipedia:AboutWikipedia:General Disclaimer

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