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Mojave River

Mojave River
Mojave River at Afton Canyon, March 2010
Country  United States
State  California
 - left Oro Grande Wash, Fremont Wash, Buckhorn Wash, Manix Wash
 - right Bell Mountain Wash, Stoddard Wash, Daggett Wash
Cities Hesperia, Apple Valley, Victorville, Barstow
Source Confluence of West Fork Mojave River and Deep Creek
 - location Mojave River Forks Reservoir, San Bernardino Mountains
 - elevation 2,986 ft (910 m)
 - coordinates  [1]
Mouth Soda Lake
 - location Baker, Mojave Desert
 - elevation 935 ft (285 m)
 - coordinates  [1]
Length 110 mi (177 km)
Basin 4,580 sq mi (11,862 km2) [2]
Discharge for Lower Narrows, near Victorville
 - average 65.7 cu ft/s (2 m3/s) [3]
 - max 70,600 cu ft/s (1,999 m3/s)
 - min 0 cu ft/s (0 m3/s)
Map of the Mojave River watershed
Mojave River cutting through Lake Manix sediments.

The Mojave River is an intermittent river in the eastern San Bernardino Mountains and the Mojave Desert in San Bernardino County, California, United States. Most of its flow is underground, while its surface channels remain dry most of the time, with the exception of the headwaters and several bedrock gorges in the lower reaches.


  • History 1
  • Course 2
  • Afton Canyon Natural Area 3
  • References 4
  • Bibliography 5
  • External links 6


A desert branch of the Serrano Native Americans called the Vanyume or Beñemé, as Father Garcés called them, lived beyond and along much of the length of the Mojave River, from the east of Barstow to at least the Victorville region, and perhaps even farther upstream to the south, for up to 8,000 years.[4] The Indian trail, later the European immigrants' Mojave Road, paralleled the river from Soda Lake to the Cajon Pass. Native Americans used this trade route where water could easily be found en route to the coast. Garcés explored up the length of the Mojave River in early 1776.[4] He called the river Arroyo de los Mártires ("river of the martyrs") on March 9, 1776 but later Spaniards called it Río de las Ánimas ("spirit river or river of the (lost) souls"). In 1826 Jedediah Smith was the first American of European origin to travel overland to California by following the Mojave Indian Trail. He called this the Inconstant River.

A pack horse and livestock trail, the Old Spanish Trail, established by Antonio Armijo in 1829 between New Mexico and Pueblo de Los Ángeles, joined the Mohave River near the present-day location of Daggett, California. It followed the river to where the trail turned to descend the nearby Cajon Pass.

John C. Frémont named the river Mohahve after the Mohave people on April 23, 1844, although these people lived two mountain ranges away on the Colorado River. He had met six travelling Mohaves that day. Some early Mormon ranchers called it the Macaby River.[5]

From 1847, Mormons pioneered the wagon road that became the Mormon Road from Salt Lake City to Los Angeles closely following the route of the Old Spanish Trail from Parowan, Utah. In 1849 Forty-niners began using the Mormon Road as a winter alternative route to California, referring to it as the "Southern Route" of the California Trail. From 1855 to 1869, the Mormon Road was improved and the route changed in places, becoming a major commercial wagon route between Utah and Southern California.

In 1863, the Mohave people's trail was improved as the wagon route of the Mojave Road. It followed the Mojave River from where the Mormon Road turned north away from the river near Daggett, where historic Camp Cady was located. It followed the river to Soda Lake, where the road turned away eastward to Fort Mojave and the mining districts on the Colorado River.

From 1863 to 1864 the Mojave River valley was a refuge from the great drought in California in those years; cattle of Southern California were preserved by its resources.


The river's source is in the San Bernardino Mountains, one of the Transverse Ranges, above Hesperia-San Bernardino. The West Fork of the Mojave flows into Silverwood Lake, formed by Cedar Springs Dam, which overflows in the Mojave River Forks Reserve area. On occasion, the lake releases water into the river.[6] Downstream, Deep Creek meets the West Fork, forming the Mojave River immediately upstream of the Mojave Forks Dam, which provides flood control. Downstream of the dam, the Mojave River flows north and east, underground in most places, through Hesperia, Victorville, and Barstow.

Near its terminus, the Mojave River flows out onto a large inland delta called the Mojave River Wash at the western edge of Mojave National Preserve. During heavy flows, the river reaches Soda Lake near Baker at the north end of the Wash, and has reached Silver Lake, even further north, in historic times. For example, during the unusually wet winter of 2004–2005, the Mojave River flowed on the surface all the way to Silver Lake and filled both Soda and Silver Lakes to a depth of several feet.[7]

Mojave River Dam Outlet

The water in the river is mostly underground. The channel at the surface remains dry most of the time, but extreme flooding is possible. For example, during a heavy El Niño in the Mojave Desert, rains caused the Mojave River to overflow onto overpassing bridges on 22 February 1993, the most damaged being on Bear Valley Road, where Victorville and Apple Valley are separated. The water comes to the surface only in areas with impermeable rock, such as the upper and lower narrows near Victorville and in the Afton Canyon area northeast of Barstow.

Afton Canyon Natural Area

Union Pacific 844 pulls a steam excursion train crossing Afton Canyon, 2011.

The Afton Canyon Natural Area, managed by the Bureau of Land Management, is located 37 miles northeast of Barstow along Interstate 15 between the Afton Road and Basin Road exits. Afton Canyon is designated as an Area of Critical Environmental Concern to protect plant and wildlife habitat, and to preserve scenic values of the Mojave River's riparian area within the canyon.[8] The Rasor Off-Highway Vehicle Area boundary enforcement has begun to reverse the heavy off-road vehicles use and damage that occurred in the riverbed and canyon. Restoration projects are ongoing, and have already brought the river's "proper functioning condition" from a "non-functioning" to a "functioning at risk" status. The objectives of the ambitious restoration project are to control exotic plants, particularly the phreatophyte Saltcedar - Tamarix (primarily Tamarix ramosissima and T. parviflora), and restoring critical desert California native plant community "structural elements" for a functioning flora and fauna habitat.[9]


  1. ^ a b
  2. ^
  3. ^
  4. ^ a b
  5. ^
  6. ^ "Silverwood Lake",
  7. ^ Eyewitness at
  8. ^ accessed 6/20/2010. BLM Public domain source]
  9. ^ . accessed 6/20/2010 . BLM Public domain source


External links

  • Mojave National Preserve website
  • Mojave River - Digital Desert
  • The Mojave River and Associated Lakes
  • Mojave River through the Victorville Narrows
  • Official Afton Canyon Natural Area website
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