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Santa Rosa and San Jacinto Mountains National Monument

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Title: Santa Rosa and San Jacinto Mountains National Monument  
Author: World Heritage Encyclopedia
Language: English
Subject: Mount San Jacinto State Park, Natural Bridges State Marine Reserve, Santa Rosa Wilderness, Anza-Borrego Desert State Park, Riverside County, California
Collection: 2000 Establishments in California, Bureau of Land Management Areas in California, Bureau of Land Management National Monuments, Cahuilla, National Monuments in California, Nature Reserves in California, Parks in Riverside County, California, Parks in Southern California, Peninsular Ranges, Protected Areas Established in 2000, Protected Areas of the Colorado Desert, San Bernardino National Forest, San Jacinto Mountains, Santa Rosa Mountains (California), United States Forest Service National Monuments, Units of the National Landscape Conservation System
Publisher: World Heritage Encyclopedia

Santa Rosa and San Jacinto Mountains National Monument

Santa Rosa and San Jacinto Mountains National Monument
Map showing the location of Santa Rosa and San Jacinto Mountains National Monument
Map showing the location of Santa Rosa and San Jacinto Mountains National Monument
Location Riverside County, California, USA
Nearest city Palm Springs, CA
Area 280,071 acres (113,341 ha)[1]
Established October 24, 2000 (2000-10-24)
Governing body U.S. Forest Service
U.S. Bureau of Land Management

The Santa Rosa and San Jacinto Mountains National Monument is a National Monument in southern California. It includes portions of the Santa Rosa and San Jacinto mountain ranges, the northernmost ones of the Peninsular Ranges system. The national monument covers portions of Riverside County, west of the Coachella Valley, approximately 100 miles (160 km) southeast of downtown Los Angeles.


  • Description 1
  • Preservation history 2
  • Landscape, vegetation, and wildlife 3
  • Management and recreation 4
  • See also 5
  • Notes 6
    • References 6.1
  • Further reading 7
  • External links 8


The Santa Rosa and San Jacinto Mountains National Monument was established in October 2000, through Congressional legislation (Public Law 106-351). It covers an area of 280,071 acres (113,341 ha).[1] It is administered jointly by the US Bureau of Land Management (BLM) and U.S. Forest ServiceSan Bernardino National Forest (SBNF).[2][3]

Many flora and fauna species within the national monument are state and federal listed threatened or endangered species, including the Peninsular Bighorn Sheep (Ovis canadensis cremnobates), a subspecies endemic to the Peninsular Ranges.

The Cahuilla peoples own substantial acreage within the monument, are one of the managing agencies, and have historic cultural sites and interests throughout the mountains.

More than 200 cultural resources have been recorded on federally managed lands within the monument, including the Martinez Canyon Rockhouse, which is listed on the National Register of Historic Places.[4]

Preservation history

Since the late 19th century, the area has been protected as public lands, beginning as forest reserves and then as part of the The Nature Conservancy, American Land Conservancy, and Friends of the Desert Mountains, have also contributed to the protection of the mountains through land purchases and acquisitions.

Landscape, vegetation, and wildlife

California section of the Peninsular Range

The monument is oriented northwest to southeast along the edge of the broad Coachella Valley, and the terrain rises sharply from below sea level to nearly 11,000 feet (3,400 m). These mountains are a part of the Peninsular Range Province, which extends from the Baja Peninsula in Mexico to the San Jacinto Mountains in California. San Jacinto Peak is the highest point in the Peninsular Range Province and has one of the steepest fault-block escarpments in North America.

The differences in elevation, temperature, and moisture give rise to diverse vegetation. Being the western boundary of the Sonoran Desert, the eastern mountainslopes are hotter and drier, while the western side is affected by the Pacific Ocean and receives more precipitation with cooler temperatures. There are several major vegetation areas ranging from sand dunes/sand fields, chaparral, and mesquite to riparian zones of willow and cottonwood, desert fan palm oasis woodland, and pinyon pine woodland, with the highest elevations supporting lodgepole pine timberline forest.

Another factor influencing plant and animal species is the "island" aspect of the San Jacinto Mountains and the Peninsular Range, the unique isolation of the landform on three sides-the Pacific Ocean to the west, the San Diego mountain kingsnake.[5]

California fan palm (Washingtonia filifera) groves, part of the natural community of oasis riparian woodland, are located at permanent water sites of both Santa Rosa and San Jacinto Mountains. The fan palm is a relict species, although not listed under the Endangered Species Act. Associated plants in the oasis woodland include honey mesquite (Prosopis glandulosa), arrow weed, and deer grass.

Justicia californica in the Santa Rosa Mountains

The largest plant category in the national monument is collectively known as desert scrub and includes Sonoran Cresosote Scrub and Sonoran Mixed Woody and Succulent Scrub vegetation communities. Desert scrub occupies more than 160,000 acres (650 km2) and consists of creosote bush (Larrea tridentata), burrobrush (Ambrosia dumosa), cacti, and other stem succulents. Desert scrub is found on the alluvial fans and intermountain bajadas, growing on coarse, well-drained soils.[5] Wildlife of the desert scrub plant community includes the federally protected Peninsular Ranges bighorn sheep (Ovis canadensis nelsoni) and the desert tortoise (Xerobates agassizii syn. Gopherus agassizii).

On both sides of the mountains, montane coniferous forest occurs from around 5,500 to 9,000 ft (1,700 to 2,700 m) in elevation. Vegetation in this area includes Jeffrey pine, ponderosa pine, incense cedar, and sugar pine.

Rare plants in the national monument include Hidden Lake bluecurls (Trichostema austromontanum ssp. compactum), a plant federally listed as threatened in 1998 and found at a single vernal pool site.[6] Others include Nuttall's scrub oak, desert sand verbena, and vanishing wild buckwheat.

There are nineteen species endemic to the Santa Rosa and San Jacinto Mountains National Monument area. These species require or are restricted to a small geographical area which makes them vulnerable to habitat disturbance. A few of these species are Johnston's rockcress, Casey's June beetle, Coachella Valley round-tailed ground squirrel, Munz's mariposa lily, San Jacinto bush snapdragon, Santa Rosa Mountain linanthus, Tahquitz ivesia, and Ziegler’s aster.[5]

The Bureau of Land Management lists eight animal species within the monument as endangered, threatened, or rare. Of these, all but one are federally listed with the southern rubber boa being state-listed as threatened. In addition to the Peninsular bighorn sheep and the desert tortoise, some of these protected wildlife include the Coachella Valley fringe-toed lizard and the Southwestern Willow Flycatcher.[5]

Management and recreation

Historic Jack Miller's cabin. NRHP-listed as Martinez Canyon Rockhouse.

The Santa Rosa and San Jacinto Mountains National Monument is managed by a mosaic of entities, including the Bureau of Land Management (89,500 acres (362 km2)), US Forest Service (65,000 acres (260 km2)), Cahuilla peoples (19,800 acres (80 km2)), California Department of Parks and Recreation (12,900 acres (52 km2)), other State of California agencies (36,400 acres (147 km2)), and privately (38,500 acres (156 km2)). Most of the common recreational uses of hiking, mountain biking, horseback riding and camping are allowed, with the exception of special areas such as ecological reserves and essential bighorn sheep habitat. The Pacific Crest Trail traverses the western part of the national monument and is one of the nation’s first National Scenic Trails established by the National Trails System Act (Public Law 90-543). This segment of the trail is managed by the US Forest Service and Bureau of Land Management through a Memorandum of Understanding (MOU).

The National Monument legislation (introduced on February 16, 2000, by Congresswoman mining and geothermal activities.[7]

See also


  1. ^ a b "National Monument detail table as of April 2012". Bureau of Land Management. Retrieved 2012-12-27. 
  2. ^ BLM: SR-SJM NM
  4. ^ "National Register of Historical Places". Martinez Canyon Rockhouse. National Park Service. December 14, 1999. Retrieved 2009-06-21. 
  5. ^ a b c d "Santa Rosa and San Jacinto Mountains National Monument Resource Management Plan and FEIS". Chapter 3-Affected Environment. Bureau of Land Management/US Forest Service. 2004. Retrieved 2009-06-21. 
  6. ^ "compactum ssp. Trichostema austromontanum". Inventory of Rare and Endangered Plants. CNPS. Retrieved 2009-06-21. 
  7. ^ "SANTA ROSA AND SAN JACINTO MOUNTAINS NATIONAL MONUMENT ACT OF 2000". Committee on Natural Resources, US House of Representatives. July 17, 2000. 


  • Santa Rosa and San Jacinto Mountains National Monument Resource Management Plan and Final Environmental Impact Statement Bureau of Land Management February 2004.
  • Santa Rosa and San Jacinto Mountains National Monument Act of 2000, July 17, 2000. Report 106-750.

Further reading

  • Bertram, Debbie and Bloom, Susan (2005). A Monument to Treasure: A Journey through the Santa Rosa and San Jacinto Mountains National Monument Desert Publications. pp. 32. ISBN 978-0977290802

External links

  • U.S. Forest Service: official 'Santa Rosa and San Jacinto Mountains National Monument' website
  • Bureau of Land Management: official Santa Rosa and San Jacinto Mountains National Monument website
  • National Landscape Conservation System: website on Santa Rosa and San Jacinto Mountains National Monument

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