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County of Sonoma
County
LakeSonoma2.jpg
Old Courthouse Square, Downtown Santa Rosa (Smaller Version).jpg Sonoma City Hall.jpg
BodegaBayCAEdit3194.jpg
Images, from top down, left to right: Lake Sonoma, Old Courthouse Square in downtown Santa Rosa, Sonoma City Hall in Sonoma Plaza, a view of Bodega Bay
Official seal of County of Sonoma
Seal
Location in the state of California
Location in the state of California
California's location in the United States
California's location in the United States
Country  United States
State  California
Region/Metro area San Francisco Bay Area
Incorporated February 18, 1850[1]
County seat Santa Rosa
Largest city Santa Rosa (population and area)
Area
 • Total 1,768 sq mi (4,580 km2)
 • Land 1,576 sq mi (4,080 km2)
 • Water 192 sq mi (500 km2)
Population (2012)
 • Total 491,829
 • Density 280/sq mi (110/km2)
Time zone Pacific Standard Time (UTC-8)
 • Summer (DST) Pacific Daylight Time (UTC-7)
Area code(s) 707
Website sonomacounty.ca.gov

Sonoma County is a county located in the U.S. state of California. As of the 2010 census, the population was 491,829.[2] Its county seat and largest city is Santa Rosa.[3]

Sonoma County comprises the Santa Rosa, CA Metropolitan Statistical Area, which is also included in the San Jose-San Francisco-Oakland, CA Combined Statistical Area. It is the northwestern county in the nine-county San Francisco Bay Area region.

Sonoma is the southwestern county and largest producer of California's Wine Country region, which also includes Napa, Mendocino, and Lake counties. It has 13 approved American Viticultural Areas and over 250 wineries. In 2002, Sonoma County ranked as the 32nd county in the United States in agricultural production.[4] As early as 1920, Sonoma County was ranked as the eighth most agriculturally productive US county and a leading producer of hops, grapes, prunes, apples, and dairy and poultry products,[5] largely due to the extent of available, fertile agricultural land in addition to the abundance of high quality irrigation water. More than 7.4 million tourists visit each year, spending more than $1 billion in 2006. Sonoma County is the home of Sonoma State University and Santa Rosa Junior College.

Sonoma County is home to several Native American tribes. By the 1830s, European settlement had set a new direction that would prove to radically alter the course of land use and resource management of this region. As of 2007, Sonoma County has rich agricultural land, albeit now largely divided between two nearly monocultural uses: grapes and pasturage. The voters have twice approved open space initiatives[6] that have provided funding for public acquisition of natural areas, preserving forested areas, coastal habitat, and other open space.

History[edit]

The Pomo, Coast Miwok and Wappo peoples were the earliest human settlers of Sonoma County, between 8000 and 5000 BC, effectively living within the natural carrying capacity of the land. Archaeological evidence of these First people includes a number of occurrences of rock carvings, especially in southern Sonoma County; these carvings often take the form of Pecked curvilinear nucleated design. Spaniards, Russians, and other Europeans claimed and settled in the county from the late 16th to mid 19th century, seeking timber, fur, and farmland.

The Russians were the first newcomers to establish a permanent foothold in Sonoma County, with the Russian-American Company establishing Fort Ross on the Sonoma Coast in 1812. This settlement and its outlying Russian settlements came to include a population of several hundred Russian and Aleut settlers and a stockaded fort with artillery. However, the Russians abandoned it in 1841 and sold the fort to John Sutter, settler and Mexican land grantee of Sacramento.

Fort Ross was established by the Russians in 1812.

The Mission San Francisco Solano, founded in 1823 as the last and northernmost of 21 California missions, is in the present City of Sonoma, at the northern end of El Camino Real. El Presidio de Sonoma, or Sonoma Barracks (part of Spain's Fourth Military District), was established in 1836 by Comandante General Mariano Guadalupe Vallejo. His duties included keeping an eye on the Russian traders at Fort Ross, secularizing the Mission, maintaining cooperation with the Native Americans of the entire region, and doling out the lands for large estates and ranches. The City of Sonoma was the site of the Bear Flag Revolt in 1846.

Sonoma was one of the original counties formed when California became a state in 1850, with its county seat originally the town of Sonoma. However, by the early 1850s, the town of Sonoma had declined in importance in terms of both commerce and population, its county buildings were crumbling, and it was relatively remote. As a result, elements in the newer, rapidly growing towns of Petaluma, Santa Rosa, and Healdsburg began vying to move the county seat to their towns. The dispute ultimately was between the bigger, richer commercial town of Petaluma and the more centrally located, growing agricultural center of Santa Rosa. The fate was decided following an election for the state legislature in which James Bennett of Santa Rosa defeated Joseph Hooker of Sonoma and introduced a bill that ultimately resulted in Santa Rosa being confirmed as county seat in 1854.[7] Allegedly, several Santa Rosans, not caring to wait, decided to take action and, one night, rode down the Sonoma Valley to Sonoma, took the county seals and records, and brought them to Santa Rosa.[8] Some of the county's land was annexed from Mendocino County between 1850 and 1860.

Early post-1847 settlement and development focused primarily on the city of Sonoma, then the region's sole town and a common transit and resting point in overland travel between the region and Sacramento and the gold fields to the east. However, after 1850, a settlement that soon became the city of Petaluma began to grow naturally near the farthest navigable point inland up the Petaluma River. Originally a hunting camp used to obtain game to sell in other markest, by 1854 Petaluma had grown into a bustling center of trade, taking advantage of its position in the river near a region of highly productive agricultural land that was being settled. Soon, other inland towns, notably Santa Rosa and Healdsburg began to develop similarly due to their locations along riparian areas in prime agricultural flatland. However, their development initially lagged behind Petaluma which, until the arrival of railroads in the 1860s, remained the primary commercial, transit, and break-of-bulk point for people and goods in the region. After the arrival of the San Francisco and North Pacific Railroad in 1870, Santa Rosa began to boom, soon equalling and then surpassing Petaluma as the region's population and commercial center. The railroad bypassed Petaluma for southern connections to ferries of San Francisco Bay.

Six nations have claimed Sonoma County from 1542 to the present:

Flag of Cross of Burgundy.svg Spanish Empire, 1542, by sea, voyage of Juan Rodríguez Cabrillo as far as the Russian River. Later validated by voyage of Sebastián Vizcaíno, 1602.
Flag of England.svg Kingdom of England, June 1579, voyage of the Golden Hind under Captain Francis Drake at Bodega Bay (exact location disputed).
Flag of Spain (1785-1873 and 1875-1931).svg Spanish Empire, October 1775, the Sonora at Bodega Bay, under Lt. Juan Francisco de la Bodega y Quadra, until 1821, when Mexico gained independence from Spain.
Flag of Russia.svg Russian Empire, by Russian-American Company expedition led by Ivan Alexandrovich Kuskov, the founder of Fort Ross and, from 1812 to 1821, its colonial administrator. Note: There is an overlap of rule with the Mexican Empire (next item), until the Russians sold Fort Ross in 1841 to John Sutter, before leaving the area in 1842.
Flag of Mexico (1821-1823).svg First Mexican Empire, August 1821, under Emperor Agustin Iturbide (October 1822, probable time new flag raised in California), until 1823.
Flag of Mexico (1823-1864, 1867-1893).svg Mexican Republic, 1823 until June 1846.
1stBearFlag.svg California Republic, 14 June 1846 until 9 July 1846.
Flag of the United States.svg United States of America, 9 July 1846 to present.

Sonoma County was severely shaken by the 1906 San Francisco earthquake. The displacements along the faultline averaged 15 feet (4.6 m).[9]

Etymology[edit]

Pomo girl c. 1924, by Edward S. Curtis' from The North American Indian volume 14.

According to the book California Place Names, "The name of the Indian tribe is mentioned in baptismal records of 1815 as Chucuines o Sonomas, by Chamisso in 1816 as Sonomi, and repeatedly in Mission records of the following years."[10]

According to the Coast Miwok and the Pomo tribes that lived in the region, Sonoma translates "valley of the moon" or "many moons". Their legends detail this as a land where the moon nestled, hence the names Sonoma Valley and the "Valley of the Moon."[11] This translation was first recorded in an 1850 report by General Mariano Guadalupe Vallejo to the California Legislature.[12] Jack London popularized it in his 1913 novel The Valley of the Moon.

In the native languages there is also a constantly recurring ending tso-noma, from tso, the earth; and noma, village; hence tsonoma, "earth village."[13] Other sources say Sonoma comes from the Patwin tribes west of the Sacramento River, and their 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.[14] The name may have applied originally to a nose-shaped geographic feature.[10]

Geography[edit]

Hood Mountain with vineyards in foreground.

According to the U.S. Census Bureau, the county has a total area of 1,768 square miles (4,580 km2), of which 1,576 square miles (4,080 km2) is land and 192 square miles (500 km2) (10.9%) is water.[15]

The county lies in the North Coast Ranges of northwestern California. Its ranges include the Mayacamas and the Sonoma Mountains, the southern peak of the latter being the prominent landform, Sears Point. The highest peak in the Mayacamas within the county is Hood Mountain. It has uncommon occurrences of pygmy forest, dominated by Mendocino Cypress. The highest peak of the Sonoma Mountains is Sonoma Mountain itself, which boasts two significant public access properties: Jack London State Historic Park and Fairfield Osborn Preserve.

The county includes the City of Sonoma and the Sonoma Valley, in which the City of Sonoma is located. However, these are not synonymous. The City of Sonoma is merely one of several incorporated cities in the county. The Sonoma Valley itself makes up only the southeastern portion of the county, which includes many other valleys and geographic zones. Moreover, the Sonoma Valley itself includes not only the City of Sonoma, but a portion of the City of Santa Rosa and the unincorporated communities of Kenwood, Agua Caliente, Boyes Hot Springs, and Fetters Hot Springs. Other regions of the county beyond the Sonoma Valley include, among others, the Petaluma Valley, the Santa Rosa Plains, the Russian River, the Alexander Valley, and the Dry Creek Valley.

Distinct habitat areas within the county include oak woodland, redwood forest, northern coastal scrub, grassland, marshland, oak savanna and riparian woodland. The California oak woodland in the upper Yulupa Creek and Spring Creek watersheds in Annadel State Park is a relatively undisturbed ecosystem with considerable biodiversity. These forested areas have been characterized as some of the best examples of such woodlands.[16] An unusual characteristic of these forests is the high content of undisturbed prehistoric bunchgrass understory, testifying to the absence of historic grazing or other agriculture.

Trees of the oak woodland habitat include Pacific Madrone, Douglas fir, Coast Live Oak, Garry oak and California laurel. Common understory plants are toyon, poison oak, and, at the fringes, coast silk-tassel.

Climate[edit]

Sonoma County's Dry Creek Valley

Sonoma County, as is often the case with coastal counties in California, has a great degree of climatic variation and numerous, often very different, microclimates.[17][18] Key determining factors for local climate are proximity to the ocean, elevation, and the presence and elevation of hills or mountains to the east and west. This is in large part due to the fact that, as throughout California, the prevailing weather systems and wind come normally from the Pacific Ocean, blowing in from the west and southwest so that places closer to the ocean and on the windward side of higher elevations tend to receive more rain from autumn through spring and more summer wind and fog. This itself is partly a result of the presence of high and low pressures in inland California, with persistent high summer temperatures in the Central Valley, in particular, leading to low pressures, drawing in moist air from the Pacific, cooling into damp cool breezes and fog over the cold coastal water. Those places further inland and particularly in the lee of significant elevations tend to receive less rain and less, in some cases no, fog in the summer.

The coast itself is typically cool and moist throughout summer, often foggy, with fog generally blowing in during the late afternoon and evening until it clears in the later morning to be sunny, before repeating. Coastal summer highs are typically in the mid to high 60s, warming to the low 70s further from the ocean.

Certain inland areas, including the Petaluma area and the Santa Rosa Plain, are also prone to this normal fog pattern in general.[18] However, they tend to receive the fog later in the evening, the fog tends to be more short-lived, and mid-day tempertatures are significantly higher than they are on the coast, typically in the low 80s F. This is particularly true for Petaluma, Cotati and Rohnert Park, and, only slightly less so, Santa Rosa, Windsor, and Sebastopol. In large part this results from lower elevations and the prominent Petaluma Gap in the hills between the ocean to the west and the Petaluma Valley and Santa Rosa Plain to the east.

Areas north of Santa Rosa and Windsor, with larger elevations to the west and further from the fog path, tend to receive less fog and less summer marine influence. Healdsburg to the north of Windsor is less foggy and much warmer, with summer highs typically in the higher 80s to about 90 °F (32 °C). Sonoma and the Sonoma Valley, east of Petaluma, are similar, with highs typically in the very high 70s F to 80 °F (27 °C). This is in part due to the presence of the Sonoma Mountains between Petaluma and Sonoma. Cloverdale far to the north out of the Santa Rosa Plain, is significantly hotter than any other city in the county, with rare evening-morning fog and highs often in the 90s, reaching 100 °F (38 °C) much more frequently than the other cities. Notably, however, the temperature differences among the different areas of the county are greatest for the highs during mid-day, with the diurnal lows much more even throughout the entire county. The lows are closely tied to the evening-morning cooling marine influence, in addition to elevation, bringing similarly cool temperatures to much of region.

These weather patterns contribute to high diurnal temperature fluctuations in much of the county. In summer, daily lows and highs are typically 30-40 °F apart in land, with highs for Petaluma, Cotati, Rohnert Park, Santa Rosa, Windsor, and Sebastopol typically being in the very low 80s F and lows at or near 50 °F (10 °C). Healdsburg and Sonoma, with similar lows, have even greater diurnal fluctuations due to their significantly warmer highs. On the other hand, the coast, with strong marine influence, tends to have low diurnal temperature fluctuation, with summer highs much cooler than the inland towns, typically 65-75 °F, yet lows in the high 40s to low 50s F, fairly comparable to most inland towns.

These microclimates are evident during the rainy seasons as well, with great variation in the amount of rainfall throughout the county. Generally, all of Sonoma County receives a fair amount of rain, with much of the county receiving between about 25 in (640 mm), comparable to areas such as Sonoma and Petaluma, and roughly 30 in (760 mm) normal for Santa Rosa. However, certain areas, particularly in the north-west portion of the county around the Russian River, receive significantly more rainfall. The Guerneville area, for example, typically receives about 50 in (1,300 mm) of rain a year, with annual rain occasionally going as high as 70 in (1,800 mm). Nearby Cazadero typically receives about 72 in (1,800 mm) of rain a year, many times has reached over 100 in (2,500 mm) a year, and sometimes over 120 in (3,000 mm) of rain a year. The Cazadero region is the second wettest place in California after Gasquet.[19]

Snow is exceedingly rare in Sonoma County except in the higher elevations on and around the Mayacamas Mountains, particularly Mount Saint Helena, and Cobb Mountain in nearby Lake County.[20]

Ocean, bays, rivers and streams[edit]

Goat Rock Beach as viewed from the Jenner Cliffs looking south, showing the mouth of the Russian River at the Pacific Ocean.

Sonoma County is bounded on the west by the Pacific Ocean, and has 76 miles (122 km) of coastline. The major coastal hydrographic features are Bodega Bay, the mouth of the Russian River, and the mouth of the Gualala River, at the border with Mendocino County. All of the county's beaches were listed as the cleanest in the state in 2010.[21]

Six of the county's nine cities, from Healdsburg south through Santa Rosa to Rohnert Park and Cotati, are in the Santa Rosa Plain. The northern Plain drains to the Russian River, or a tributary; the southern Plain drains to the Russian River via the Laguna de Santa Rosa.

Russian River[edit]

Much of central and northern Sonoma County is in the watershed of the Russian River and its tributaries. The river rises in the coastal mountains of Mendocino County, north of the city of Ukiah, and flows into Lake Mendocino, a major flood control reservoir. The Russian flows south from the lake through Mendocino to Sonoma County, paralleled by Highway 101. It turns west at Healdsburg, receiving water from Lake Sonoma via Dry Creek, and empties into the Pacific Ocean at Jenner.

Laguna de Santa Rosa[edit]

The Laguna de Santa Rosa is the largest tributary of the Russian River.[22] It is 14 miles (23 km) long, running north from Cotati to the Russian River near Forestville. Its flood plain is more than 7,500 acres (30 km2). It drains a 254-square-mile (660 km2) watershed, including most of the Santa Rosa Plain.

The Laguna de Santa Rosa Foundation says:[23]

"The Laguna de Santa Rosa is Sonoma County's richest area of wildlife habitat, and the most biologically diverse region of Sonoma County (itself the second-most biologically diverse county in California)... It is a unique ecological system covering more than 30,000 acres (120 km2) and comprised of a mosaic of creeks, open water, perennial marshes, seasonal wetlands, riparian forests, oak woodlands and grasslands... As the receiving water of a watershed where most of the county's human population lives, it is a landscape feature of critical importance to Sonoma County's water quality, flood control, and biodiversity."

The Laguna's largest tributary is Santa Rosa Creek, which runs through Santa Rosa. Its major tributaries are Brush Creek, Mark West Creek, Matanzas Creek, Spring Creek and Piner Creek. Matanzas creek was shown to be polluted in Sonoma county first flush results.[citation needed]

Other water bodies[edit]

The boundary with Marin County runs from the mouth of the Estero Americano at Bodega Bay, up Americano Creek, then overland to San Antonio Creek and down the Petaluma River to its mouth at the northwest corner of San Pablo Bay, which adjoins San Francisco Bay. The southern edge of Sonoma County comprises the northern shore of San Pablo Bay between the Marin County border at the Petaluma River and the border with Solano County at Sonoma Creek. Sonoma County has no incorporated communities directly on the shore of San Pablo Bay. At the present there is only a private marina with related facilities called Port Sonoma near the mouth of the Petaluma River. However, the Petaluma River which flows into San Pablo Bay, is navigable up to the city of Petaluma.

The Petaluma River, Tolay Creek, and Sonoma Creek enter the bay at the county's southernmost tip. The intertidal zone where they join the bay is the vast Napa Sonoma Marsh.

Americano Creek, the Petaluma River, Tolay Creek, and Sonoma Creek are the principal streams draining the southern portion of the county. The Sonoma Valley is drained by Sonoma Creek, whose major tributaries are Yulupa Creek, Graham Creek, Calabazas Creek, Schell Creek and Carriger Creek; Arroyo Seco Creek is tributary to Schell Creek.Other creeks include Foss, Felta,and Mill creeks.

Lakes and reservoirs in the county include Lake Sonoma, Tolay Lake, Lake Ilsanjo, Santa Rosa Creek Reservoir, Lake Ralphine, and Fountaingrove Lake.

Marine protected areas of Sonoma County[edit]

Like underwater parks, these marine protected areas help conserve ocean wildlife and marine ecosystems.

Threatened/endangered species[edit]

A number of endangered plants and animals are found in Sonoma County including the California Clapper Rail (Rallus longirostris obsoletus), Salt Marsh Harvest Mouse (Reithrodontomys raviventris), Northern Red-legged Frog (Rana aurora), Sacramento Splittail (Pogonichthys macrolepidotus), California freshwater shrimp (Syncaris pacifica), Showy Indian clover (Trifolium amoenum) and Hickman's potentilla (Potentilla hickmanii).

Species of special local concern include the California Tiger Salamander (Ambystoma californiense) and some endangered plants, including Burke's Goldfields (Lasthenia burkei), Sebastopol Meadowfoam (Limnanthes vinculans), and Sonoma Sunshine or Baker's Stickyseed (Blennosperma bakeri).

Endangered species that are endemic to Sonoma County include Sebastopol Meadowfoam, Sonoma Sunshine, and Pitkin Marsh lily (Lilium pardalinum subsp. pitkinense).

The Sonoma County Water Agency has had a Fisheries Enhancement Program since 1996. Its website says:[24]

"The primary focus of the FEP is to enhance habitat for three salmonids: Steelhead, Chinook salmon, and Coho salmon. These three species are listed as threatened under the U.S. Endangered Species Act. The California Department of Fish and Game considers the Coho salmon endangered."

Adjacent counties[edit]

National protected area[edit]

Transportation[edit]

Major highways[edit]

U.S. Route 101

U.S. Route 101 is the westernmost Federal highway in the U.S.A. Running north/south through the states of California, Oregon, and Washington, it generally parallels the coastline from the Mexican border to the Canadian border. Highway 101 links seven of the county's nine incorporated cities: Cloverdale, Healdsburg, Windsor, Santa Rosa, Rohnert Park, Cotati, and Petaluma. It is a freeway for almost its entire length within the county, except for a section south of Petaluma.

The four-lane sections of the highway have been heavily congested during peak commute hours for many years. The part of the highway between Santa Rosa and Rohnert Park was widened to six lanes, with the section within Santa Rosa (between Highway 12 and Steele Lane) being completed in late 2008. The two new inner lanes are designated for vehicles with two or more occupants during commute hours. The next section due to be expanded from four to six lanes is between Santa Rosa and Windsor.

State Route 1

Within Sonoma County, Highway 1 follows the coastline from the Mendocino County border, at the mouth of the Gualala River, to the Marin County border, at the Estero Americano (Americano Creek), east of Bodega Bay.

State Route 12

State Route 12 in Sonoma (Broadway)

Highway 12 runs eastward from its intersection with Highway 116 in Sebastopol to Santa Rosa. There it turns south through the Valley of the Moon to Sonoma, then east into Napa County. The four-lane freeway section within Santa Rosa, between Fulton Road and Farmers Lane, is called the Luther Burbank Memorial Highway. That section, especially where it crosses Highway 101, is severely congested during peak commute hours.

The two-lane Bodega Highway runs west from the intersection of Highways 12 and 116 in Sebastopol, through the coastal hills to its intersection with Highway 1, east of Bodega Bay. East of Santa Rosa, Highway 12 is also called Sonoma Highway; and east of Sonoma, Carneros Highway.

State Route 37

Highway 37 connects Highway 101 at Novato, in Marin County, with Interstate 80 in Vallejo, in Solano County, at the top of San Pablo Bay. Within Sonoma County, it is also called Sears Point Road.

State Route 116

Highway 116 is a winding, two-lane rural route that runs from Jenner, at the mouth of the Russian River on the coast, southeast to Arnold Drive near Sonoma. It is also called Guerneville Highway, between Guerneville and Forestville; Gravenstein Highway North, between Forestville and Sebastopol; and Gravenstein Highway South, between Sebastopol and Stony Point Road, west of Rohnert Park. East of Petaluma it is Lakeville Highway, then Stage Gulch Road.

State Route 121

Highway 121 is a two-lane rural route running from Highway 37 near Sears Point Raceway to Highway 128 in Lake Berryessa.

State Route 128

The northernmost section of Highway 128 is a two-lane rural route running southeast from Highway 101 at Geyserville, north of Healdsburg, through the Alexander Valley into Napa County.

Public transportation[edit]

  • Sonoma County Transit is the countywide transit operator, providing service to all cities in Sonoma County.
  • Santa Rosa Transit provides bus routes in and near the city of Santa Rosa.
  • The cities of Cloverdale and Petaluma also provide their own local bus service.
  • Golden Gate Transit connects Santa Rosa and points south with Marin County and San Francisco.
  • Mendocino Transit Authority runs north from Santa Rosa to Ukiah (via US 101) and to the coast (via California Routes 12 and 1).
  • Valley of the Moon Commuter Club express service to San Francisco

Sonoma-Marin Area Rail Transit/SMART is a commuter rail system planned to go between Larkspur in Marin County and Cloverdale in Sonoma County. A sales tax surcharge measure to finance it narrowly failed in the 2006 election, but passed in 2008.

Airports[edit]

  • The Charles M. Schulz - Sonoma County Airport is at 2290 Airport Boulevard, west of Highway 101, between Santa Rosa and Windsor. Its main runway is 5,115 feet (1559 m) long and 150 feet (46 m) wide, and can accommodate planes up to 95,000 pounds (43,000 kg) maximum gross take off weight. It offers fuel, major maintenance, hangar space, and tie-downs for local and transient aircraft. Horizon Air, of Seattle, Washington, offers regular daily commercial flights.

Railroads[edit]

Historical railroads of Sonoma County
Mesa Grande train station, about 1910

The Petaluma and Haystack Railroad connected the city of Petaluma to a ferries of San Francisco Bay landing at the head of navigation on the Petaluma River in 1864.

The San Francisco and North Pacific Railroad (SF&NP) connected the City of Santa Rosa to ferry connections at Donahue landing on the Petaluma River in 1870. Rail service was extended north to Healdsburg in 1871 and Cloverdale in 1872. In 1884 the railroad was extended south to an alternate ferry connection in Tiburon. This rail line will be used by the Sonoma-Marin Area Rail Transit.

The 3-foot-gauge North Pacific Coast Railroad extended northward in 1876 from a ferry connection at Sausalito through Valley Ford, Freestone and Occidental to Monte Rio on the lower Russian River. Service was extended to Duncan Mills in 1877 and Cazadero in 1885. The standard gauge Fulton and Guerneville Railroad left the SF&NP at Fulton to reach Korbel in 1876 and Guerneville in 1877. Standard-gauge rails were extended down-river to Duncan Mills in 1909 after the Northwestern Pacific Railroad merger, and narrow-gauge service was discontinued in 1930.

The unique Sonoma Valley Prismoidal Railway linked the city of Sonoma to bay ferries in 1876, and was replaced in 1879 by the 3-foot (0.91 m)-gauge Sonoma Valley Railroad to a ferry landing near the mouth of the Petaluma River. Service was extended from Sonoma to Glen Ellen in 1882. The southern end of the line was extended westward in 1888 to a connection with the SF&NP at Ignacio. This line was converted to standard-gauge in 1890 and remains (in 2009) as Sonoma County's connection to the national rail system at Schellville.

Southern Pacific subsidiary Santa Rosa and Carquinez Railroad extended eastward in 1888 to link Santa Rosa with the national rail system.

A SF&NP branch line from Santa Rosa brought rail service to Sebastopol in 1890. The Petaluma and Santa Rosa Railroad extended interurban service north from a ferry connection in Petaluma to reach Sebastopol in 1904, Santa Rosa in 1905, and Forestville in 1906.

Crime[edit]

The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.

Cities by population and crime rates[edit]

Demographics[edit]

2011[edit]

Places by population, race, and income[edit]

2010[edit]

Historical population
Census Pop.
1850 560
1860 11,867 2,019.1%
1870 19,819 67.0%
1880 25,926 30.8%
1890 32,721 26.2%
1900 38,480 17.6%
1910 48,394 25.8%
1920 52,090 7.6%
1930 62,222 19.5%
1940 69,052 11.0%
1950 103,405 49.7%
1960 147,375 42.5%
1970 204,885 39.0%
1980 299,681 46.3%
1990 388,222 29.5%
2000 458,614 18.1%
2010 483,878 5.5%
Est. 2013 495,025 2.3%
U.S. Decennial Census[37]
1790-1960[38] 1900-1990[39]
1990-2000[40] 2010-2013[2]

The 2010 United States Census reported that Sonoma County had a population of 483,878. The racial makeup of Sonoma County was 371,412 (76.8%) White, 7,610 (1.6%) African American, 6,489 (1.3%) Native American, 18,341 (3.8%) Asian, 1,558 (0.3%) Pacific Islander, 56,966 (11.8%) from other races, and 21,502 (4.4%) from two or more races. Hispanic or Latino of any race were 120,430 persons (24.9%).[41]

2000[edit]

At the 2000 census,[42] there were 458,614 people, 172,403 households, and 112,406 families in Sonoma County. The population density was 291/sq mi (112/km²). There were 183,153 housing units at an average density of 116/sq mi (45/km²).

Of the 172,403 households, 50.3% were married couples living together, 34.8% were non-families, and 10.4% had a female householder with no husband present. 31.9% had children under the age of 18 living with them, 25.7% were individuals, and 10.0% were 65 years of age or older living alone. The average household size was 2.60, and the average family size was 3.12.

The median age was 38 years. 24.5% were under 18, 8.8% from 18 to 24, 29.2% from 25 to 44, 24.9% from 45 to 64, and 12.6% were 65 years of age or older. For every 100 females there were 97 males. For every 100 females age 18 and over, there were 94 males.

The median household income was $53,076, and the median family income was $61,921. Males had a median income of $42,035, females $32,022. The per capita income for the county was $25,724. About 4.7% of families and 8.1% of the population were below the poverty line, including 8.4% of those under age 18 and 5.7% of those age 65 or over.

Metropolitan Statistical Area[edit]

The United States Office of Management and Budget has designated Sonoma County as the Santa Rosa, CA Metropolitan Statistical Area.[43] The United States Census Bureau ranked the Santa Rosa, CA Metropolitan Statistical Area as the 105th most populous metropolitan statistical area of the United States as of July 1, 2012.[44]

The Office of Management and Budget has further designated the Santa Rosa, CA Metropolitan Statistical Area as a component of the more extensive San Jose-San Francisco-Oakland, CA Combined Statistical Area,[43] the 5th most populous combined statistical area and primary statistical area of the United States as of July 1, 2012.[44][45]

Government[edit]

Sonoma County's governing board and legislative body is a five-member Board of Supervisors.[46] Supervisors are elected by district[47] at the Consolidated Primary Election, and serve for four years. The Supervisors also sit as directors of several local jurisdictions, such as the Water Agency,[48] and Agricultural Preservation & Open Space District.[49]

Three current Supervisors were elected in 2008: Valerie Brown (Sonoma Valley—1st District), Shirlee Zane (Santa Rosa—3rd District), and Efren Carrillo (Roseland/Sebastopol/West County—5th District); and two in 2010: David Rabbitt (Petaluma—2nd District) and Mike McGuire (Healdsburg—4th District). Zane is the current Chair (2012). Rabbitt and McGuire are freshman supervisors.

The Supervisors appoint the members of 59 boards, commissions, and committees.[50]

The County Administrator[51] is the county's chief executive officer, reporting to the Board of Supervisors. The administrator manages the county's departments, such as the regional parks department.

On December 15, 2009, the Board announced[52] the appointment of Veronica Ferguson to be the first woman County Administrator. She assumed office on February 1, 2010.

In 2013, the county was weighing plans to establish a public utility, under the guidelines of Community Choice Aggregation, to provide electricity, replacing PG&E service for up to 80% of the county residents.[53][54]

Law enforcement[edit]

The Sonoma County Sheriff's Department is the law enforcement agency for the unincorporated area of the county. It also contracts to provide the police forces of the City of Sonoma and the Town of Windsor. The department has more than 1,000 employees, including more than 275 Deputy Sheriffs, in four Bureaus. More than 300 Correctional Officers and staff work in two jail facilities; Main Area Detention Facility and the North County Detention Facility, with a total daily population of nearly 1,200 inmates.[55] Police shootings in 2007 have led to calls for an independent civilian police review board.[56]

Economy[edit]

Forbes Magazine ranked the Santa Rosa metropolitan area—essentially the entire county—185th out of 200, on its 2007 list of Best Places For Business And Careers.[57] It was second on the list five years before. Sonoma County was downgraded because of an increase in the cost of doing business, and reduced job growth, both blamed on increases in the cost of housing.

Viticulture[edit]

Vineyard on northwest flank of Sonoma Mountain.
Main article: Sonoma County wine

Winemaking—both the growing of the grapes and their vinting—is an important part of the economic and cultural life of Sonoma County. In 2004, growers harvested 165,783 tons (150,396 tonnes) of wine grapes worth US$310 million. In 2006 the Sonoma County grape harvest amounted to over 185,000 tons, exceeding Napa County's harvest by over 30 percent.[58] About 80 percent of non-pasture agricultural land in the county is for growing wine grapes—59,973 acres (242.70 km²) of vineyards, with over 1100 growers. The most common varieties planted are Chardonnay, Cabernet Sauvignon, and Pinot noir, though the area is also known for its Merlot and Zinfandel[citation needed].

Sonoma County is home to more than 250 wineries with eleven distinct and two shared American Viticultural Areas, including the Sonoma Valley AVA, Russian River Valley AVA, Alexander Valley AVA, Bennett Valley AVA and Dry Creek Valley AVA, the last of which is known for the production of high-quality Zinfandels[citation needed].

Tourism[edit]

In addition, the county's progressive political environment have made the Guerneville area along the Russian River the home of a number of gay and lesbian resorts, which have catered to the San Francisco-area LGBT weekend-getaway tourists since the 1970s.

Politics[edit]

Voter registration statistics[edit]

Cities by population and voter registration[edit]

Overview[edit]

Sonoma County vote
by party in presidential elections
Year GOP DEM Others
2012 26.0% 45,666 70.9% 124,504 3.2% 5,568
2008 24.1% 55,127 73.7% 168,888 2.5% 5,817
2004 30.9% 68,204 67.1% 148,261 1.9% 4,225
2000 32.3% 63,529 59.4% 117,295 8.2% 16,182
1996 29.5% 53,555 55.6% 100,738 14.9% 27,004
1992 24.1% 47,619 52.8% 104,334 23.1% 45,738
1988 41.9% 67,725 56.5% 91,262 1.6% 2,596
1984 51.1% 76,447 47.6% 71,295 1.3% 1,915
1980 48.2% 60,722 36.2% 45,596 15.6% 19,667
1976 47.7% 50,555 47.5% 50,353 4.8% 5,044
1972 54.7% 57,697 41.5% 43,746 3.8% 3,991
1968 48.8% 38,088 43.0% 33,587 8.2% 6,384
1964 38.4% 27,677 61.5% 44,354 0.2% 105
1960 54.1% 34,641 45.5% 29,147 0.4% 244
1956 61.9% 33,659 37.9% 20,616 0.2% 86
1952 66.1% 35,605 32.8% 17,675 1.1% 594
1948 55.2% 22,077 40.1% 16,026 4.7% 1,881
1944 50.4% 16,309 49.3% 15,949 0.3% 111
1940 51.9% 16,819 47.0% 15,230 1.0% 330
1936 39.0% 11,185 60.2% 17,273 0.9% 248
1932 35.7% 9,161 61.1% 15,686 3.2% 822
1928 59.7% 12,891 39.4% 8,506 0.9% 194
1924 56.0% 9,535 10.4% 1,767 33.6% 5,726
1920 66.9% 10,377 26.2% 4,070 6.9% 1,065
Sonoma County vote
by party in gubernatorial elections
Year GOP DEM
2010 30.1% 55,472 64.7% 119,079
2006 47.0% 81,608 44.6% 77,392
2003 35.0% 54,651 40.7% 63,588
2002 29.9% 43,408 50.4% 73,079
1998 29.0% 46,616 64.3% 103,235
1994 45.7% 73,234 49.7% 79,720
1990 38.6% 54,706 55.8% 79,093
1986 59.4% 75,003 37.9% 47,859
1982 45.1% 55,968 51.2% 63,542
1978 35.9% 37,584 54.3% 56,920
1974 48.0% 40,339 48.5% 40,756
1970 58.6% 44,823 39.2% 29,953
1966 60.7% 41,516 39.3% 26,898
1962 49.7% 29,647 49.2% 29,373

Sonoma County was strongly Republican for most of the 20th century; between 1920 and 1984 the only Democrats to carry Sonoma were Franklin D. Roosevelt in 1932 and 1936 and Lyndon B. Johnson in 1964. But as a result of demographic changes in recent decades, it is now a strongly Democratic county in Presidential and congressional elections. The last Republican to win a majority in the county was Ronald Reagan in 1984, and the last Republican to represent a significant part of the county in Congress was Donald H. Clausen.

Sonoma County is split between California's 2nd and 5th congressional districts, represented by Jared Huffman (DSan Rafael) and Mike Thompson (DSt. Helena), respectively.[60]

In the California State Assembly, Sonoma County is split between the 2nd, 4th, and 10th districts, which are held by Democrat Jim Wood, Democrat Bill Dodd, and Democrat Marc Levine, respectively.[61] In the California State Senate, the county is split between the 2nd Senate District, represented by Democrat Mike McGuire, and the 3rd Senate District, represented by Democrat Lois Wolk.

On November 4, 2008 Sonoma County voted 66.1% against Proposition 8 which amended the California Constitution to ban same-sex marriages.

According to the California Secretary of State, as of October 2012, there are 260,315 registered voters in Sonoma County. Of those, 134,234 (51.6%) are registered Democratic, 56,567 (21.7%) are registered Republican, and 55,010 (21.1%) declined to state a political party. Every city, town, and the unincorporated areas of Sonoma County have more registered Democrats than Republicans.

Education[edit]

Higher education[edit]

The educational system of Sonoma County is similar to that of other counties in California.

Library system[edit]

The Sonoma County Library system offers a Central Library in downtown Santa Rosa, as well as ten branch libraries and two rural stations. The system is also a member of the North Bay Cooperative Library System. More than half of Sonoma County's residents have library cards. They borrow over 2.5 million items a year. Staff answer nearly half a million reference questions annually for individuals, businesses and government agencies. They offer instruction in the use of Library resources in such fields as genealogy, grant writing, and use of the Internet. During a typical school year over 750 classes, more than half the county total, either visit a library or are visited by a children's librarian. The Library operates an adult literacy program, training volunteers to tutor individuals who lack basic reading ability. Computer terminals are made available for free Internet access.

Museums[edit]

City of Santa Rosa, A-26 Invader attack bomber built in 1944.

Places of interest[edit]

Populated places[edit]

Sonoma County has nine incorporated municipalities.

Downtown Santa Rosa, county seat of Sonoma County since 1854.
Downtown Petaluma.
Incorporated communities Population[63] Incorporation Date[64]
City of Cloverdale 8,618 February 28, 1872
City of Cotati 7,265 July 16, 1963
City of Healdsburg 11,254 February 20, 1867
City of Petaluma 57,941 April 12, 1858
City of Rohnert Park 40,971 August 28, 1962
City of Santa Rosa 167,815 March 26, 1868
City of Sebastopol 7,379 June 13, 1902
City of Sonoma 10,648 September 3, 1883
Town of Windsor 26,801 July 1, 1992

It also includes the following populated places which are not incorporated:

In popular culture[edit]

Due to the varied scenery in Sonoma County and proximity to the city of San Francisco, a large number of motion pictures have been filmed using venues within the county. Some of the earliest U.S. filmmaking occurred in Sonoma County such as Salomy Jane (1914) and one of Broncho Billy Anderson's 1915 Westerns. Many of these films are classics in American cinematography such as the 1947 film The Farmer's Daughter (starring Joseph Cotten and Loretta Young) and two Alfred Hitchcock films, Shadow of a Doubt of 1943, filmed and set in Santa Rosa and The Birds of 1963, filmed largely in Bodega Bay and Bodega. Many other modern classics have used Sonoma County as a filming venue, including American Graffiti, filmed largely in Petaluma.

A few other representative films produced partially in Sonoma County are:

Sonoma County

  • 1965 The Third Day
  • 1986 Peggy Sue Got Married - Petaluma, including a 1950s makeover of Washington St., the diner "Millie's Chili Bar" (rechristened as "The Donut Hole"), and exterior and interior shots of Santa Rosa High School.
  • 1993 Nowhere to Run - Coleman Valley Road, Occidental, for farmhouse and pond scenes.
  • 2001 The Man Who Wasn't There
  • 2001 Bandits - Flamingo Hotel, Clover milk truck featuring local icon "Clo the cow" and rural county roads.

Cloverdale

Glen Ellen

Petaluma

Russian River

  • 1925 Braveheart - Along the river.
  • 1942 Holiday Inn - Village Inn Lodge in Monte Rio as the "Holiday Inn" with tons of artificial snow.

Santa Rosa

Sebastopol

Sonoma

The town of Sonoma in southeast Sonoma County hosts the annual Sonoma Valley Film Festival, a nationally recognized event.

See also[edit]

Notes[edit]

  1. ^ Only larceny-theft cases involving property over $400 in value are reported as property crimes.
  2. ^ Other = Some other race + Two or more races
  3. ^ Native American = Native Hawaiian or other Pacific Islander + American Indian or Alaska Native
  4. ^ a b Percentage of registered voters with respect to total population. Percentages of party members with respect to registered voters follow.

References[edit]

  1. ^ "Chronology". California Counties. California State Association of Counties. Retrieved 2012-05-14. 
  2. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved May 31, 2014. 
  3. ^ "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  4. ^ "Sonoma County Indicators: 2007". Sonoma County. Retrieved July 17, 2014. 
  5. ^ "Sonoma County Flood Control and Water Conservation District: History". Sonoma County Water Agency. [dead link]
  6. ^ "Sonoma County Agricultural Preservation and Open Space District". Sonoma County. Retrieved July 17, 2014. 
  7. ^ "Sonoma County History". Calarchives4u.com. Retrieved July 17, 2014. [dead link]
  8. ^ "History of Sonoma County". ap.net. AccessPort. [dead link]
  9. ^ "Sonoma County General Plan - Public Safety Element". 2008-10-11. 
  10. ^ a b Gudde, Erwin Gustav; Bright, William (1998). California Place Names: The Origin and Etymology of Current Geographical Names (Second Edition ed.). Berkeley: University of California Press. pp. g. 370. ISBN 0-520-21316-5. 
  11. ^ May, James (May 19, 2003). "Why Graton is trying to get into gaming". Indian Country Today. Retrieved 2009-01-25. 
  12. ^ Hanna, Phil Townsend (1951). The Dictionary of California Land Names. Los Angeles: The Automobile Club of Southern California. p. 311. 
  13. ^ Alfred Louis Kroeber (1976). Handbook of the Indians of California. New York City, N.Y.: Dover Publications. 
  14. ^ Alfred L. Kroeber, AAE 29:354 [1932]
  15. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23. 
  16. ^ "Annadel State Park". Parks and Recreation in Sonoma County. Archived from the original on 2012-01-20. 
  17. ^ "Sonoma County Climatic Zones" (PDF). University of California Cooperative Extension. Archived from the original on 2007-08-12. Retrieved 2007-11-30. 
  18. ^ a b Forrey, Rip. "Climate data for various locations in Sonoma, Napa, Mendocino, Lake and Marin counties, California" (PDF). University of California Cooperative Extension Sonoma County. Archived from the original on 2007-06-30. Retrieved 2007-11-30. 
  19. ^ Freedman, Wayne (2006-04-05). "Rainiest Town In The Bay Area Up For Sale". KGO-TV News. Retrieved 2007-12-13. 
  20. ^ "Subsection M261Be Konocti Flows". U.S. Forest Service. Archived from the original on 2011-09-22. Retrieved 2014-02-22. 
  21. ^ Carolyn Jones (May 27, 2010). "Bay Area beaches grade well for safe swimming". San Francisco Chronicle. 
  22. ^ "The Ecology of the Laguna de Santa Rosa". lagunafoundation.org. Laguna de Santa Rosa Foundation. Retrieved July 17, 2014. 
  23. ^ "Ecology". lagunadesantarosa.org. Laguna de Santa Rosa Foundation. [dead link]
  24. ^ "Fisheries Enhancement Program". Sonoma County Water Agency. [dead link]
  25. ^ Marin, Solono, Sonoma and Contra Costa Counties' borders come to a common point approx. 6 miles into San Francisco Bay. Thus, Contra Costa County is an adjacent county. Hittell, Theodore Henry (1876). The codes and statutes of the State of California. A. L. Bancroft. p. 515. Retrieved August 20, 2012. 
  26. ^ "California Codes, Government Codes". Retrieved August 20, 2012.  |chapter= ignored (help)
  27. ^ a b c d e f g h i j k l m n o p q U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B02001. American FactFinder. Retrieved 2013-10-26.
  28. ^ a b c d e f g h i j Office of the Attorney General, Department of Justice, State of California. Table 11: Crimes – 2009. Retrieved 2013-11-14.
  29. ^ a b c United States Department of Justice, Federal Bureau of Investigation. Crime in the United States, 2012, Table 8 (California). Retrieved 2013-11-14.
  30. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B03003. American FactFinder. Retrieved 2013-10-26.
  31. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19301. American FactFinder. Retrieved 2013-10-21.
  32. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19013. American FactFinder. Retrieved 2013-10-21.
  33. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19113. American FactFinder. Retrieved 2013-10-21.
  34. ^ a b U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates. American FactFinder. Retrieved 2013-10-21.
  35. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B01003. American FactFinder. Retrieved 2013-10-21.
  36. ^ a b c d e f Data unavailable
  37. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved May 31, 2014. 
  38. ^ "Historical Census Browser". University of Virginia Library. Retrieved May 31, 2014. 
  39. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved May 31, 2014. 
  40. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. Retrieved May 31, 2014. 
  41. ^ "2010 Census P.L. 94-171 Summary File Data". United States Census Bureau. 
  42. ^ "American FactFinder". United States Census Bureau. Retrieved 2011-05-14. 
  43. ^ a b "OMB Bulletin No. 13-01: Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas". United States Office of Management and Budget. February 28, 2013. Retrieved March 20, 2013. 
  44. ^ a b "Table 1. Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2010 to July 1, 2012" (CSV). 2012 Population Estimates. United States Census Bureau, Population Division. March 2013. Retrieved March 20, 2013. 
  45. ^ "Table 2. Annual Estimates of the Population of Combined Statistical Areas: April 1, 2010 to July 1, 2012" (CSV). 2012 Population Estimates. United States Census Bureau, Population Division. March 2013. Retrieved March 20, 2013. 
  46. ^ "Board of Supervisors". Sonoma County. Retrieved July 17, 2014. 
  47. ^ "Supervisorial Districts". sonoma-county.org. Retrieved July 17, 2014. 
  48. ^ "Sonoma County Water Agency". scwa.org. Retrieved July 17, 2014. 
  49. ^ "Sonoma County Agricultural Preservation and Open Space District". sonomaopenspace.org. Retrieved July 17, 2014. 
  50. ^ "Boards, Commissions, Committees & Task Forces". sonoma-county.org. June 29, 2011. Retrieved July 17, 2014. 
  51. ^ "County Administrators Office". Departments and Agencies. Sonoma County. [dead link]
  52. ^ "Press Release: Supervisors Announce New County Administrator". Sonoma County. December 15, 2009. Retrieved July 17, 2014. 
  53. ^ "Power brokers: Sonoma County plan imminent". The Press Democrat. April 21, 2013. Retrieved July 21, 2013. 
  54. ^ "Should Sonoma County create a local power agency?". Watch Sonoma County. June 11, 2010. Retrieved July 21, 2013. 
  55. ^ "Sheriff's Department Overview". Sonoma County Sheriff's Office. April 19, 2002. Retrieved July 17, 2014. 
  56. ^ Santa Rosa Press Democrat, 3/30/07: Fatal police shootings rekindle review debate/Recent cases raise decade-old concerns over agencies' abilities to investigate each other
  57. ^ Kurt Badenhausen (04.05.07). "Best Places For Business And Careers". Forbes. Retrieved July 17, 2014.  Check date values in: |date= (help)
  58. ^ "2006 Sonoma County grape harvest statistics: Sonoma County Vintners associaiation". Sonoma County Vintner. [dead link]
  59. ^ a b c d e f g h i j k l m n o p q California Secretary of State. February 10, 2013 - Report of Registration. Retrieved 2013-10-31.
  60. ^ "California's 5th Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved March 1, 2013. 
  61. ^ "Members Assembly". State of California. Retrieved March 2, 2013. 
  62. ^ "Sonoma County Regional Parks". parks.sonomacounty.ca.gov. Retrieved July 17, 2014. 
  63. ^ "Places in California listed alphabetically". U.S. Census. Retrieved 2012-10-31. 
  64. ^ "California Cities by Incorporation Date" (Word). California Association of Local Agency Formation Commissions. Retrieved August 25, 2014. 

Further reading[edit]

External links[edit]

Coordinates: 38°31′N 122°56′W / 38.51°N 122.93°W / 38.51; -122.93


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