|Floor elevation||4,000 feet (1,200 m)|
|Length||75 miles (121 km) North to South|
|Native name||Payahǖǖnadǖ (Mono)|
|Population centers||Bishop, Lone Pine, Independence, Big Pine|
|Borders on||Inyo Mountains (E)|
Coso Range (SE)
Rose Valley (S)
Sierra Nevada (W)
Chalfant Valley (N)
|Traversed by||U.S. Route 395|
Owens Valley (Mono: Payahǖǖnadǖ, meaning "place of flowing water") is an arid valley of the Owens River in eastern California in the United States. It is located to the east of the Sierra Nevada, west of the White Mountains and Inyo Mountains, and is within the northern end of the Mojave Desert. It sits on the west edge of the Great Basin. The mountain peaks on the West side (including Mount Whitney) reach above 14,000 feet (4,300 m) in elevation, while the floor of the Owens Valley is about 4,000 feet (1,200 m), making the valley the deepest in the United States. The Sierra Nevada casts the valley in a rain shadow, which makes Owens Valley "the Land of Little Rain". The bed of Owens Lake, now a predominantly dry endorheic alkali flat, sits on the southern end of the valley.
The current arid nature of the valley is mostly due to the Los Angeles Department of Water and Power diverting the water of the region. The valley provides water to the Los Angeles Aqueduct, the source of one-third of the water for city, and was the area at the center of one of the fiercest and longest-running episodes of the California Water Wars. Owens Lake was completely emptied by 1926, only 13 years after Los Angeles began diverting water. The water diversions inspired aspects of the 1974 film Chinatown.
About three million years ago, the Sierra Nevada Fault and the White Mountains Fault systems became active with repeated episodes of slip earthquakes gradually producing the impressive relief of the eastern Sierra Nevada and White Mountain escarpments that bound the northern Owens Valley-Mono Basin region.
Owens Valley is a graben—a down-dropped block of land between two vertical faults—the westernmost in the Basin and Range Province. It is also part of a trough which extends from Oregon to Death Valley called the Walker Lane.
The western flank of much of the valley has large moraines coming off the Sierra Nevada. These unsorted piles of rock, boulders, and dust were pushed to where they are by glaciers during the last ice age. An excellent example of a moraine is on State Route 168 as it climbs into Buttermilk Country.
This graben was formed by a long series of earthquakes, such as the 1872 Lone Pine earthquake, that have moved the graben down and helped move the Sierra Nevada up. The graben is much larger than the depth of the valley suggests; gravity studies suggest that 10,000 feet (3,048 m) of sedimentary rock mostly fills the graben and that a very steep escarpment is buried under the western length of the valley. The topmost part of this escarpment is exposed at Alabama Hills.
The valley was inhabited in late prehistoric times by the Timbisha (also called Panamint or Koso) in the extreme south end around Owens Lake and by the Mono tribe (also called Owens Valley Paiute) in the central and northern portions of the valley. The Timbisha speak the Timbisha language, classified in the Numic branch of Uto-Aztecan language family. The closest related languages are Shoshoni and Comanche. The Eastern Mono speak a dialect of the Mono language, which is also Numic but is more closely related to Northern Paiute. The Timbisha presently live in Death Valley at Furnace Creek although most families also have summer homes in the Lone Pine colony. The Eastern Mono live in several colonies from Lone Pine to Bishop. Trade between Native Americans of the Owens Valley and coastal tribes such as the Chumash has been indicated by the archaeological record.
On May 1, 1834, Joseph R. Walker entered Owens Valley from the south, having crossed the Sierra Nevada at Walker Pass. Walker and his group of 52 men traveled up the valley on their way back to the Humboldt Sink, and back up the Humboldt River to the Rocky Mountains.
In 1845, John C. Fremont named the Owens valley, river, and lake for Richard Owens, one of his guides. Camp Independence was established on Oak Creek near modern Independence, California, on July 4, 1862, during the Owens Valley Indian War.
Water diversion to Los Angeles
In the early 20th century, the valley became the scene of a struggle between local residents and the city of Los Angeles over water rights. William Mulholland, superintendent of the Los Angeles Department of Water and Power (LADWP), planned the 223-mile (359 km) Los Angeles Aqueduct, completed in 1913, which diverted water from the Owens River. The water rights were acquired deceitfully, often splitting water cooperatives and pitting neighbors against one another. In 1924, local farmers were fed up with the purchases and erupted in violence, sabotaging parts of the water system.
Eventually, Los Angeles acquired a large portion of the water rights to over 300,000 acres (121,000 ha) of land in the valley, almost completely diverting the water inflows away from Owens Lake. Gary Libecap of the University of California, Santa Barbara, observed that the price Los Angeles was willing to pay to other water sources per volume of water was far higher than what the farmers received.: 89 Farmers who resisted the pressure from Los Angeles until 1930 received the highest price for their land; most farmers sold their land from 1905 to 1925, and received less than Los Angeles was willing to pay. The sale of their land brought the farmers substantially more income than if they had kept the land for farming and ranching.: 90 None of the sales were made under threat of eminent domain. As a result of these acquisitions, the lake subsequently dried up completely, leaving the present alkali flat which plagues the southern valley with alkali dust storms.
In 1970, LADWP completed a second aqueduct from Owens Valley. More surface water was diverted, and groundwater was pumped to feed the aqueduct. Owens Valley springs and seeps dried and disappeared, and groundwater-dependent vegetation began to die.
Years of litigation followed. In 1997, Inyo County, Los Angeles, the Owens Valley Committee, the Sierra Club, and other concerned parties signed a Memorandum of Understanding that specified terms by which the lower Owens River would be rewatered by June 2003. LADWP missed this deadline and was sued again. Under another settlement, this time including the State of California, Los Angeles promised to rewater the lower Owens River by September 2005. In July 2004, Los Angeles mayor James Hahn proposed barring all future development on its Owens Valley holdings by proposing a conservation easement for all LADWP land. They did not meet this extended deadline. In 2008, Los Angeles fulfilled its promise and rewatered the lower Owens River.
Pursuant to a 2014 agreement between the city and Great Basin Unified Air Pollution Control District (GBUAPCD, the Owens Valley air quality regulators), LADWP began using a new method of suppressing airborne dust from the dry bed of Owens Lake. In 2022, the GBUAPCD issued an order and subsequently fined the Los Angeles utility for ignoring an order to control dust on a 5-acre patch of dry lake bed. The LADWP responded with a lawsuit, accusing the air district of exceeding its authority and ordering dust control measures without first conducting an environmental analysis of its impacts, as required by the California Environmental Quality Act. A California Superior Court ruled that the 2014 agreement doesn't cover the dispute and the fines levied by GBUAPCD are unenforceable.
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- The Owens Valley Committee: The Owens Valley
- Cenozoic/Mesozoic Volcanism of the Eastern Sierra Nevada
- Groundwater Quality in the Owens Valley, California United States Geological Survey
- Lower Owens River Project - 60-mile (97 km) restoration of the lower owens river
- Inyo County Water Department
- Eval. of the Hydrologic System and Selected Water-Management Alternatives in the Owens Valley, California
- Roadside Geology and Mining History of the Owens Valley and Mono Basin
- Deepest Valley: Owens Valley resource Archived 2020-09-20 at the Wayback Machine
- Prehistory of Owens Valley