Sonoma Valley is a

valley A valley is an elongated low area often running between Hill, hills or Mountain, mountains, which will typically contain a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers ...

located in southeastern

Sonoma County Sonoma County () is a county (United States), county located in the U.S. state of California. As of the 2020 United States Census, its population was 488,863. Its county seat and largest city is Santa Rosa, California, Santa Rosa. It is to the n ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

, in the North Bay region of the

San Francisco Bay Area The San Francisco Bay Area, often referred to as simply the Bay Area, is a populous region surrounding the San Francisco, San Pablo, and Suisun Bay estuaries in Northern California. The Bay Area is defined by the Association of Bay Area Go ...

. Known as the birthplace of the

California wine California wine production has a rich viticulture history since 1680 when Spanish Jesuit missionaries planted ''Vitis vinifera'' vines native to the Mediterranean region in their established missions to produce wine for religious services. I ...

industry, the valley is home to some of the earliest vineyards and wineries in the state, some of which survived the

phylloxera Grape phylloxera is an insect pest of commercial grapevines worldwide, originally native to eastern North America. Grape phylloxera (''Daktulosphaira vitifoliae'' (Fitch 1855) belong to the family Phylloxeridae, within the order Hemiptera, bugs ...

epidemic of the 1870s and the impact of

prohibition Prohibition is the act or practice of forbidding something by law; more particularly the term refers to the banning of the manufacture, storage (whether in barrels or in bottles), transportation, sale, possession, and consumption of alcoholic ...

in the early 20th century. Today, the valley's wines are promoted by the U.S. federal government's

Sonoma Valley Sonoma Valley is a valley located in southeastern Sonoma County, California, in the North Bay region of the San Francisco Bay Area. Known as the birthplace of the California wine industry, the valley is home to some of the earliest vineyards a ...

and

Carneros AVA Los Carneros AVA (also known as Carneros AVA) is an American Viticultural Area which includes parts of both Sonoma and Napa counties in California, U.S.A. It is located north of San Pablo Bay. The proximity to the cool fog and breezes from t ...

s (or

American Viticultural Area An American Viticultural Area (AVA) is a designated wine grape-growing region in the United States, providing an official appellation for the mutual benefit of winery, wineries and consumers. Winemakers frequently want their consumers to know abo ...

s). Sonoma Valley offers a wide range of year-round festivals and events, including the

Sonoma International Film Festival Sonoma International Film Festival (SIFF) is a 501 (c)(3) non-profit arts organization dedicated to promoting the best in independent film and filmmakers from around the world, inspiring savvy film lovers and introducing the power of film to stude ...

. Points of interest include the Quarryhill Botanic Garden,

Mission San Francisco Solano Mission San Francisco Solano was the 21st, last, and northernmost mission in Alta California. It was named for Saint Francis Solanus. It was the only mission built in Alta California after Mexico gained independence from Spain. The difficulty o ...

Jack London State Historic Park Jack London State Historic Park, also known as Jack London Home and Ranch, is a California State Historic Park near Glen Ellen, California, United States, situated on the eastern slope of Sonoma Mountain. It includes the ruins of a house burned ...

Sonoma State Historic Park Sonoma State Historic Park is a California State Park located in the center of Sonoma, California. The park consists of six sites: the Mission San Francisco Solano, the Sonoma Barracks (sometimes called the Presidio of Sonoma), the Blue Wing I ...

and the Blue Wing Inn of 1840.

Geography

The valley is located in southeastern

between the

Mayacamas Mountains The Mayacamas Mountains are located in northwestern California in the United States. The mountain range is part of the Northern Inner Coast Ranges, of the California Coast Ranges System. Geography The Mayacamas Mountains are located south of the ...

and

Sonoma Mountains The Sonoma Mountains are a northwest–southeast trending mountain range of the Inner Coast Ranges in the California Coast Ranges System, located in Sonoma County, Northern California. Geography The Sonoma Mountains range is approximately long. ...

. It stretches from

San Pablo Bay San Pablo Bay is a tidal estuary that forms the northern extension of San Francisco Bay in the East Bay and North Bay regions of the San Francisco Bay Area in northern California. Most of the Bay is shallow; however, there is a deep water ch ...

in the south to the city of

Santa Rosa Santa Rosa is the Italian, Portuguese and Spanish name for Saint Rose. Santa Rosa may also refer to: Places Argentina *Santa Rosa, Mendoza, a city * Santa Rosa, Tinogasta, Catamarca * Santa Rosa, Valle Viejo, Catamarca * Santa Rosa, La Pampa * S ...

in the north.

Sonoma Creek , name_etymology = , image = Beaver Dam Sonoma Creek, Sonoma Thanksgiving 2009.jpg , image_caption = Beaver dam on Sonoma Creek at Maxwell Farms Regional Park in Sonoma, California, 2009 , image_size = 300 , ma ...

flows down the valley to the bay. The area includes the incorporated city of Sonoma and part of the city of Santa Rosa, as well as numerous unincorporated communities, including Kenwood and

Glen Ellen Glen Ellen is a census-designated place (CDP) in Sonoma Valley, Sonoma County, California, United States. The population was 784 at the 2010 census, down from 992 at the 2000 census. Glen Ellen is the location of Jack London State Historic P ...

near Santa Rosa and, near Sonoma, El Verano,

Boyes Hot Springs Boyes Hot Springs (also called Boyes Springs or The Springs)is a census-designated place (CDP) in Sonoma Valley, Sonoma County, California, United States. The population was 6,656 people at the 2010 census. Resorts in Boyes Hot Springs, El Verano ...

, Fetters Hot Springs, and Agua Caliente.

History

Once a valley of the coastal

Miwok The Miwok (also spelled Miwuk, Mi-Wuk, or Me-Wuk) are members of four linguistically related Native American groups indigenous to what is now Northern California, who traditionally spoke one of the Miwok languages in the Utian family. The word ' ...

Pomo The Pomo are an Indigenous people of California. Historical Pomo territory in Northern California was large, bordered by the Pacific Coast to the west, extending inland to Clear Lake, and mainly between Cleone and Duncans Point. One small grou ...

and

Wintun The Wintun are members of several related Native American peoples of Northern California, including the Wintu (northern), Nomlaki (central), and Patwin (southern).Pritzker, 152 Franciscan order , image = FrancescoCoA PioM.svg , image_size = 200px , caption = A cross, Christ's arm and Saint Francis's arm, a universal symbol of the Franciscans , abbreviation = OFM , predecessor = , ...

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

as the site to build the

, the northernmost mission in their chain of twenty-one

mission Mission (from Latin ''missio'' "the act of sending out") may refer to: Organised activities Religion *Christian mission, an organized effort to spread Christianity *Mission (LDS Church), an administrative area of The Church of Jesus Christ of ...

s built in

Alta California Alta California ('Upper California'), also known as ('New California') among other names, was a province of New Spain, formally established in 1804. Along with the Baja California peninsula, it had previously comprised the province of , but ...

. Established in 1823 and named to honor St.

Francis Solanus Francisco Solano y Jiménez, (also known as Francis Solanus; 10 March 1549 – 14 July 1610) was a Spanish friar and missionary in South America, belonging to the Order of Friars Minor (the Franciscans), and is honored as a saint in the Roman Cath ...

, Mission Solano was the sole California mission established under the rule of a newly independent

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

. Within two generations of the Spaniards' arrival, however, the indigenous societies of the region were dispossessed of their land and decimated by diseases to which Europeans were resistant. Soon after the Sonoma mission was built, it was secularized by the Mexican government, and, under the orders of Lieutenant, later General

Mariano Guadalupe Vallejo Don Mariano Guadalupe Vallejo (4 July 1807 – 18 January 1890) was a Californio general, statesman, and public figure. He was born a subject of Spain, performed his military duties as an officer of the Republic of Mexico, and shaped the trans ...

, el Pueblo de Sonoma (the town of Sonoma) was laid out in the standard form of a Mexican town, centered around the historic plaza, which is still the town's focal point. Also known as "Valley of the Seven Moons" The raising of the first California

Bear Flag The Bear Flag is the official flag of the U.S. state of California. The precursor of the flag was first flown during the 1846 Bear Flag Revolt and was also known as the Bear Flag. A predecessor, called the Lone Star Flag, was used in an 183 ...

and Vallejo's arrest in 1846 by a band of Americans claiming to act on the orders of Col. John C. Fremont was the initial act that founded the Bear Flag Republic. Vallejo later transferred his allegiance with US statehood (1850), and with his amassed land holdings guided the development of the town and dispensed large ranches throughout the valley. California's first wineries were established here, including

Buena Vista Winery Buena Vista Winery is a winery located in Sonoma, California, United States. It is the second oldest winery in California after the D'Agostini Winery, which was founded a year prior in 1856. It was founded by Agoston Haraszthy in 1857. The winery ...

(1857) and Gundlach Bundschu (1858). The other communities in the valley, such as Kenwood,

, Schellville, and

, were founded later in the 19th century, some as resorts centered on the

geothermic Geothermal energy is the thermal energy in the Earth's crust which originates from the formation of the planet and from radioactive decay of materials in currently uncertain but possibly roughly equal proportions. The high temperature and pre ...

hot springs that still well up from deep within the earth. Boyes Hot Springs and Agua Caliente were popular health retreats for tourists from

San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...

and points beyond until the middle of the 20th century. Today the Sonoma Mission Inn in Boyes Hot Springs remains as a main destination resort, and the wineries, the historic sites, and the area's natural beauty are the main tourist attractions. In October 2017, Sonoma Valley was badly affected by the

Tubbs Fire The Tubbs Fire was a wildfire in Northern California during October 2017. At the time, the Tubbs Fire was the most destructive wildfire in California history, burning parts of Napa, Sonoma, and Lake counties, inflicting its greatest losses in ...

Origin of the name

The phrase "Valley of the Moon" was first recorded in an 1850 report by General

to the California Legislature. According to

Jack London John Griffith Chaney (January 12, 1876 – November 22, 1916), better known as Jack London, was an American novelist, journalist and activist. A pioneer of commercial fiction and American magazines, he was one of the first American authors to ...

, who had a ranch there, the Native American word ''Sonoma'' means "valley of the moon." He used it for his book of the same name. But there are several other possible translations for Sonoma (see

Sonoma County, California Sonoma County () is a county (United States), county located in the U.S. state of California. As of the 2020 United States Census, its population was 488,863. Its county seat and largest city is Santa Rosa, California, Santa Rosa. It is to the n ...

). According to the

tribes that lived in the valley, and the

, it meant "valley of the moon" or "many moons." Settlers may have accidentally translated the words "many moons" into "valley of moons." Miwok legends say that the moon seemingly rose from this valley, or was "nestled" in the valley, or may have even sprung up multiple times in one night. In the native languages there is also a constantly recurring ending ''tso-noma'', from ''tso'', the earth; and ''noma'', village; hence ''tsonoma'', "earth village." Other sources say Sonoma comes from the Patwin tribes west of the

Sacramento River The Sacramento River ( es, Río Sacramento) is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for before reaching the Sacramento–S ...

, and their

Wintu The Wintu (also Northern Wintun) are Native Americans who live in what is now Northern California. They are part of a loose association of peoples known collectively as the Wintun (or Wintuan). Others are the Nomlaki and the Patwin. The Wintu ...

word for "nose." Per ''California Place Names,'' "the name is doubtless derived from a Patwin word for 'nose', which Padre Arroyo (Vocabularies, p. 22) gives as ''sonom'' ( Suisun)." Spaniards may have found an Indian chief with a prominent protuberance and applied the nickname of ''Chief Nose'' to the village and the territory. The name may have applied originally to a nose-shaped geographic feature.

Geology

The Sonoma Valley is part of the Coast Range Physiographic province. Basement rocks that make up the valley at great depth are the

Great Valley Sequence The Great Valley Sequence of California is a -thick group of related geologic formations that are Late Jurassic through Cretaceous in age (150–65 Ma) on the geologic time scale. These sedimentary rocks were deposited during the late Mesozoic ...

shale, sandstone and conglomerate deposited in a continental slope- to abyssal plain environment via turbidite flows. The

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

Great Valley Sequence overlies and contacts the

Franciscan Complex The Franciscan Complex or Franciscan Assemblage is a geologic term for a late Mesozoic terrane of heterogeneous rocks found throughout the California Coast Ranges, and particularly on the San Francisco Peninsula. It was named by geologist Andrew ...

along the Coast Range Thrust. The Jurassic-Cretaceous Franciscan Complex includes crumpled, uplifted

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its own ...

s that have resulted from the

subduction Subduction is a geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries. Where the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the ...

of the former oceanic

Farallon Plate The Farallon Plate was an ancient oceanic plate. It formed one of the three main plates of Panthalassa, alongside the Phoenix Plate and Izanagi Plate, which were connected by a triple junction. The Farallon Plate began subducting under the west ...

under the North American continent. During late Miocene-Pliocene time (~10 to ~4 million years) the area was attended by

volcanism Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called ...

(Late Miocene Tolay Volcanics and Late Miocene - Pliocene Sonoma Volcanics) which are interbedded with the late Miocene-Pliocene Petaluma Formation. The (~9 to 4 million year old) Petaluma Formation was a fresh-water river system flowing from east to west and through the volcanics. At that time, volcanic lava flows and river sands and gravels were actively deposited together, hence "interbedded lavas and gravels". The volcanoes may have been similar to

island arc Island arcs are long chains of active volcanoes with intense seismic activity found along convergent tectonic plate boundaries. Most island arcs originate on oceanic crust and have resulted from the descent of the lithosphere into the mantle alon ...

s. The Petaluma Formation is found in outcrop from Sears Point to Santa Rosa (through Sonoma Mountain) and as far west as Cotati where it interfingers with a marine sandstone called the Wilson Grove Formation. Gravels in the Petaluma Formation did not come from rocks located in Napa, but have been sourced to mountains east of San Jose, California. This does not mean rivers flowed northward from San Jose to Sonoma; rather, strike-slip movement along the Hayward-Sonoma Valley-Carneros fault system has dislocated present-day Sonoma County north and away from the mountains in San Jose where the basin formed. The valley is drained by

, whose headwaters rise in Sugarloaf Mountain State Park and discharge into the

at the

Napa Sonoma Marsh The Napa Sonoma Marsh is a wetland at the northern edge of San Pablo Bay, which is a northern arm of the San Francisco Bay in California, United States. This marsh has an area of 48,000 acres (194 km2), of which 13,000 acres (53 km2) are ...

. Some of the principal tributaries to Sonoma Creek are

Yulupa Creek Yulupa Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 10, 2011 southeast-flowing perennial stream that rises on the southeastern flanks of the northern Sonoma Mountains ...

, Graham Creek,

Calabazas Creek Calabazas Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed March 10, 2011 stream in the Sonoma Valley, California, United States, that rises in the southern Mayacamas Mounta ...

, Bear Creek, Schell Creek and

Carriger Creek Carriger Creek is a stream Sonoma County, California. Southwest of the city of Sonoma, California, its name changes to Fowler Creek. This article covers both parts of the creek. Carriger Creek springs from the eastern slope of Sonoma Mountain, ...

Hydrogeology

In spring 2006, the United States Geological Survey in conjunction with the

Sonoma County Water Agency Sonoma Water, formerly known as the Sonoma County Water Agency, maintains a water transmission system that provides naturally filtered Russian River water to more than 600,000 residents in portions of Sonoma County, California and Marin County, C ...

completed a comprehensive basin-wide groundwater study to characterize groundwater resources in the Sonoma Valley. The report can be obtained on the USGS publications website. Currently, a Basin Advisory Panel, composed of stakeholders from agriculture, environmental groups, domestic well owners, municipalities and government is working to develop a groundwater management plan to protect groundwater resources in the valley.

Points of interest

* Quarryhill Botanic Garden, a research

botanical garden A botanical garden or botanic gardenThe terms ''botanic'' and ''botanical'' and ''garden'' or ''gardens'' are used more-or-less interchangeably, although the word ''botanic'' is generally reserved for the earlier, more traditional gardens, an ...

housing one of the largest collections of temperate Asian plants in North America. Quarryhill is open to the public. *

was the 21st, last and northernmost mission in Alta California. *

also known as ''Jack London Home and Ranch'', is a

California State Historic Park List of California State Historic Parks — a division of the California Department of Parks and Recreation, for historic sites in California. List * Anderson Marsh State Historic Park * Antelope Valley Indian Museum State Historic Park *Bal ...

near

, United States, situated on the eastern slope of

Sonoma Mountain Sonoma Mountain is a prominent landform within the Sonoma Mountains of southern Sonoma County, California. At an elevation of , Sonoma Mountain offers expansive views of the Pacific Ocean to the west and the Sonoma Valley to the east. In fact, ...

. *

is a

state park State parks are parks or other protected areas managed at the sub-national level within those nations which use "state" as a political subdivision. State parks are typically established by a state to preserve a location on account of its natural ...

located in the center of

Sonoma, California Sonoma is a city in Sonoma County, California, United States, located in the North Bay region of the San Francisco Bay Area. Sonoma is one of the principal cities of California's Wine Country and the center of the Sonoma Valley AVA. Sonoma's p ...

. The park consists of six sites: the

, the Presidio of Sonoma or Sonoma Barracks, the Toscano Hotel, the Blue Wing Inn, and La Casa Grande and Lachryma Montis. *

is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
accessed March 10, 2011

stream A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a stream ...

northern California Northern California (colloquially known as NorCal) is a geographic and cultural region that generally comprises the northern portion of the U.S. state of California. Spanning the state's northernmost 48 counties, its main population centers incl ...

. *

Wine Country Wine Country is the region of California, in the northern San Francisco Bay Area, known worldwide as a premier wine-growing region. The region is famed for its wineries, its cuisine, Michelin star restaurants, boutique hotels, luxury resorts, ...

is an area of

Northern California Northern California (colloquially known as NorCal) is a geographic and cultural region that generally comprises the northern portion of the U.S. state of California. Spanning the state's northernmost 48 counties, its main population centers incl ...

in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

known world-wide as a premium

wine Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are m ...

-growing region. *

Sonoma Plaza Sonoma Plaza (Spanish: ''Plaza de Sonoma'') is the central plaza of Sonoma, California. The plaza, the largest in California, was laid out in 1835 by Mariano Guadalupe Vallejo, founder of Sonoma. Description This plaza is surrounded by many his ...

, the town square of Sonoma, is on the

National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...

. * Blue Wing Inn of 1840, where notable guests, according to local tradition, included

John C. Frémont John Charles Frémont or Fremont (January 21, 1813July 13, 1890) was an American explorer, military officer, and politician. He was a U.S. Senator from California and was the first Republican nominee for president of the United States in 1856 ...

, U. S. Grant, Governor

Pío Pico Don Pío de Jesús Pico (May 5, 1801 – September 11, 1894) was a Californio politician, ranchero, and entrepreneur, famous for serving as the last governor of California (present-day U.S. state of California) under Mexican rule. A member of ...

Kit Carson Christopher Houston Carson (December 24, 1809 – May 23, 1868) was an American frontiersman. He was a fur trapper, wilderness guide, Indian agent, and U.S. Army officer. He became a frontier legend in his own lifetime by biographies and n ...

, Fighting Joe Hooker,

William T. Sherman William is a male given name of Germanic origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of Engl ...

Phil Sheridan General of the Army Philip Henry Sheridan (March 6, 1831 – August 5, 1888) was a career United States Army officer and a Union general in the American Civil War. His career was noted for his rapid rise to major general and his close a ...

, and members of the

Party. * General

Home: Official residence of the last Spanish governor. * Presidio of Sonoma adobe * Toscano Hotel * Swiss Hotel, Adobe structure and original home of Vallejo's brother, located on 'The Square' (see link below) * Sebastiani Theatre, a historical theatre built in 1933 by Samuele Sebastiani as a movie house. * Sonoma TrainTown Railroad, miniature amusement park *Depot Park * Sonoma Valley Visitors Bureau, located on the Plaza next to City Hall.

References

Kroeber, A. L., ''Handbook of the Indians of California'' (New York 1976 - reprint of Bulletin 78 of the Bureau of American Ethnology of the Smithsonian Institution 1925)

External links

Sonoma Valley Visitors Bureau
{{Coord, 38, 22, N, 122, 30, W, region:US-CA_type:landmark, display=title Valleys of California Valleys of Sonoma County, California California wine Religious places of the indigenous peoples of North America