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96-771: Sandstone Peak , also known as Mount Allen , is a mountain in Ventura County, California . It is the highest summit in the Santa Monica Mountains , with an elevation of 3,114 feet (949 m). Located near the western edge of the Santa Monica Mountains National Recreation Area , the summit provides panoramic views of Malibu , the Pacific Ocean , Santa Monica , the Conejo Valley , and four of

192-575: A component of the more extensive Los Angeles–Long Beach, CA Combined Statistical Area , the second most populous combined statistical area and primary statistical area of the United States as of July 1, 2012. In 2019, the county faced a weak economic outlook due to the declining housing affordability and lack of job growth. Ventura River The Ventura River , in western Ventura County in southern California , United States, flows 16.2 miles (26.1 km) from its headwaters to

288-475: A considerable range in climate because of differences in topography between one part of the county and another. Rainfall is limited in summer and crops have to be irrigated. The average annual temperature is near 60 °F at low elevations near the ocean, in the 50s over most of the northern two-thirds of the county, and less than 45 °F in the Topatopa Mountains . The annual range in temperature

384-492: A diverse array of natural habitats, including grassland, coastal sage scrub , chaparral, oak woodlands and savannas; coniferous woodlands; riparian scrub, woodlands and wetlands; alluvial scrub; freshwater aquatic habitats; estuarine wetlands; and coastal cobble, dune and intertidal habitats. The Ventura River estuary, at the mouth of the Ventura River, is an exceptionally valuable wetland habitat and ecological resource in

480-426: A household in the county was $ 59,666, and the median income for a family was $ 65,285. Males had a median income of $ 45,310, versus $ 32,216 for females. The per capita income for the county was $ 24,600. About 6.4% of families and 9.2% of the population were below the poverty line , including 11.6% of those under age 18 and 6.3% of those aged 65 or over. According to an updated 2005 US Census, median household income

576-542: A matter of hours. Major or moderate floods have occurred once every five years on average since 1933. The most damaging flood recorded in the Ventura River watershed occurred in 1969. The watershed above Ojai received 43 inches (1,100 mm) of rain in nine days in January. The floodwaters and associated debris flooded homes in Casitas Springs and Live Oak Acres. Much agricultural land, primarily citrus groves,

672-723: A number of factors, including trash, algae, water diversion/pumping, eutrophic conditions, low dissolved oxygen, nitrogen, fish barriers, coliform, bacteria, mercury, and total dissolved solids. The estuary has been on the Clean Water Act 303(d) list for trash impairment for 10+ years. In 2008 the Los Angeles Regional Water Quality Control Board adopted the Ventura River Estuary Trash Total Maximum Daily Load (TMDL) to address

768-535: A watershed management plan. Approved in 2015, this comprehensive plan proposed ways to improve the health and sustainability of the watershed. Camping in the Ventura River bottom, which is dry most of the year, was outlawed by the Ventura City Council in 1995 after floods killed one man and prompted the evacuation of 12 other people near the Main Street bridge. The Ventura River Parkway Trail

864-513: Is 58% white, 37% Hispanic or Latino, 2% Asian, and 3% other races. Income varies widely, and several areas qualify as disadvantaged or severely disadvantaged communities. The river flows 16.2 miles (26.1 km) from its headwaters through to the Pacific Ocean . The smallest of the three major rivers in Ventura County, the Ventura River's source stream is Matilija Creek , from its confluence with North Fork Matilija Creek. Matilija Creek

960-449: Is Ventura River's highest volume tributary, followed by San Antonio Creek, which joins the Ventura River from the east halfway to the ocean; Coyote Creek enters the river from the west about 7 miles (11 km) from the river mouth and Cañada Larga Creek from the east a few miles downstream. Much of the Ventura River's route is contained by the steeply sloped sides of the narrow Ventura Valley, with its final 0.7 miles (1.1 km) through

1056-542: Is a stub . You can help Misplaced Pages by expanding it . Ventura County, California Ventura County ( / v ɛ n ˈ t ʊər ə / ) is a county located in the southern part of the U.S. state of California . As of the 2020 census , the population was 843,843. The largest city is Oxnard , and the county seat is the city of Ventura . Ventura County comprises the Oxnard–Thousand Oaks–Ventura, CA Metropolitan Statistical Area, which

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1152-517: Is between 70 °F and 80 °F on the Coastal Plain and as much as 100 °F in the interior. For July, the average maximum temperature is between 70 °F and 80 °F on the Coastal Plain but exceeds 90 °F in the upper part of the Ventura- and Cuyama River Valleys. For January, the average minimum temperature is near 40 °F on the coast but in the lower 30s and upper 20s in

1248-526: Is in greenbelts between the cities. Because of this, its private low-key location, its country feel, and its proximity to Los Angeles, the Conejo Valley area has become a very attractive place to live. Like most areas of Ventura County, it once had relatively inexpensive real estate, but prices have risen sharply. For example, real estate in Newbury Park has increased in price by more than 250% in

1344-505: Is known for its steep coastal terrain with little beach access, nearby County Line Beach in the south coast community of Solromar is part of the fabled Malibu coastline. Ventura County has plenty of other surf spots along the coast including the notable surf spot, Rincon Point , on the Santa Barbara County-line. The Channel Islands in Ventura County are Anacapa and San Nicholas Islands . Ventura County has

1440-965: Is part of the Greater Los Angeles area (Los Angeles–Long Beach, CA Combined Statistical Area). It is also considered the southernmost county along the California Central Coast . Two of the Channel Islands are part of the county: Anacapa Island , which is the most visited island in Channel Islands National Park , and San Nicolas Island . Ventura County was historically inhabited by the Chumash people , who also settled much of Santa Barbara and San Luis Obispo Counties, with their presence dating back 10,000–12,000 years. The Chumash were hunter-gatherers , fishermen, and also traders with

1536-745: Is protected by the Ojai Valley Land Conservancy (OVLC), the Ventura Land Trust, Ventura County Watershed Protection District, Ventura County Parks, and the City of Ventura. The Ventura River Preserve, owned by the OVLC, protects 1,600 acres (650 ha) of land in and adjacent to the river, including 3 miles (4.8 km) of the river. The Ventura River Watershed Council, which includes government agencies, nonprofit groups, businesses, community groups, and individuals, prepared

1632-422: Is small, conserving water and obtaining water from additional sources outside of Ventura County are vital concerns. The climate, though mostly mild and dry, varies because of the variations in topography through for instance differences in elevation and physical geography. The Santa Clara River is the principal waterway. Lake Casitas , an artificial reservoir, is the largest body of water. The highest peaks in

1728-476: The Channel Islands . The peak separates the drier inland valley from the coast facing side with higher humidity. The Sandstone Peak Trail , which leads to the top, connects to a vast trail system in the area, including the Backbone Trail . The mountain is highly popular with climbers, hikers, campers, and photographers. The Boy Scouts of America petitioned the U.S. Board on Geographic Names to name

1824-566: The Chumash Wilderness in the northernmost portion, adjacent to Kern County , as well as the large Sespe Wilderness and portions of both the Dick Smith Wilderness and Matilija Wilderness (both of these protected areas straddle the line with Santa Barbara County). All of the wilderness areas are within the jurisdiction of Los Padres National Forest. The coastal plain was formed by the deposition of sediments from

1920-631: The Environmental Protection Agency (EPA) determined there had been discharge to navigable waters of the United States in violation of the Clean Water Act . The EPA's site assessment found that there were numerous leaking pipelines, leaking tanks and leaking production vessels throughout the abandoned property. The site was also out of compliance with Los Angeles Water Quality Control Board's Ventura River Estuary Trash Total Maximum Daily Load. The EPA issued an order that

2016-692: The Mojave , Yokuts , and Tongva Indians. The Chumash are also known for their rock paintings and for their great basketry. Chumash Indian Museum in Thousand Oaks has several reconstructed Chumash houses ('apa) and there are several Chumash pictographs in the county, including the Burro Flats Painted Cave in Simi Valley. The plank canoe, called a tomol in Chumash , was important to their way of life. Canoe launching points on

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2112-638: The Pacific Ocean . The smallest of the three major rivers in Ventura County, it flows through the steeply sloped, narrow Ventura Valley, with its final 0.7 miles (1.1 km) through the broader Ventura River estuary, which extends from where it crosses under a 101 Freeway bridge through to the Pacific Ocean. The Ventura River watershed encompasses 226 square miles (590 km ) consisting of steep mountains and foothills, with altitudes ranging from 6,010 feet (1,830 m) to sea level. Valley floors are home to communities and farms. Conditions in much of

2208-674: The Santa Clara River and from the streams of the Calleguas-Conejo drainage system. It has a mean elevation of fifty feet (15 m), but at points south of the Santa Clara River, the elevation is as much as 150 feet (46 m), and at points north of the river, as much as 300 feet (91 m). The coastal plain is generally known as the Oxnard Plain with the part that centers on Camarillo lying east of

2304-634: The U.S. 101 corridor and sent population rising in West County cities as well. The largest population growth there has been in Camarillo, Oxnard, and Ventura. Development in the East County and along the US 101 corridor is rare today, because most of these cities, such as Thousand Oaks and Simi Valley, are approaching build-out. Although the area still has plenty of open space and land, almost all of it

2400-665: The Ventura River is a narrow valley north of Ventura . Ojai Valley is connected to the Ventura River Valley by San Antonio Creek. The small Upper Ojai Valley , east of Ojai Valley and 300 to 500 feet (91 to 152 m) higher, drains to the Ventura River on the west and to Santa Paula Creek on the east. Ojai and Upper Ojai Valleys are surrounded by mountains and are rich agricultural areas. The Ventura River flows south and drains an area of 226 square miles (590 km ). Over South Mountain and Oak Ridge, south of

2496-489: The steelhead trout ( Oncorhynchus mykiss ) in the Ventura river watershed (both above and below Matilija Dam) has shown them to be of native and not hatchery stocks. The watershed is challenged by invasive, non-native plants, such as giant reeds , ice plants and castor bean , which choke out the willows and estuary-area salt marsh which normally support the native fauna. Plans and projects have been underway since

2592-497: The "Ojai Valley Trail" part (completed in 1987) extends from Foster Park into the City of Ojai. The 15.8-mile trail (25.4 km), with the steady grade of the former Southern Pacific Railway right-of-way, is very popular with bicyclists, as well as walkers and horseback riders (on the Ojai Valley Trail segment). As of 2015 , the vision of a "Ventura River Parkway," a network of trails, vista points, and natural areas along

2688-482: The  impairment and establish time schedule orders to improve water quality in this segment of the watershed. The installation of stormwater treatment devices for the Ventura Freeway crossing was included in funding from the 2021 federal Infrastructure Investment and Jobs Act . A USA Petrochem petroleum refinery, situated within the 100-year floodplain of the river, was shut down in 1985. In August 2012

2784-481: The 1990s to restore natural features, flora and fauna to the river. Limited land development and large areas of protected habitat in the watershed help support surface water that is relatively clean compared with more developed areas in the region. However, all of the watershed major waterbodies are on the Clean Water Act Section 303(d) list of impaired waterbodies. Surface waters are impaired for

2880-558: The Buenaventura watershed—flank the Ventura River watershed's lower section and are dependent on its water. Water from the Ventura River watershed is used to irrigate avocado orchards in the North Ventura Coastal Streams watershed and serves a significant population within the City of Ventura. Santa Barbara Channelkeeper filed a lawsuit in 2014 alleging the city of Ventura was taking too much water from

2976-482: The Chumash language that was spoken in Ventura County was Ventureño . Several place names in the county has originated from Chumash, including Ojai , which means moon, and Simi Valley, which originates from the word Shimiyi and refers to the stringy, thread-like clouds that typify the region. Others include Point Mugu from the word Muwu (meaning "beach"), Saticoy from the word Sa'aqtiko'y (meaning "sheltered for

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3072-500: The Conejo Grade. Geographically East County is the end of the Santa Monica Mountains , in which the Conejo Valley is located, and where there is a considerable increase in elevation. Communities which are considered to be in the East County are Thousand Oaks , Newbury Park , Lake Sherwood , Hidden Valley , Santa Rosa Valley, part of Westlake Village, Oak Park , Moorpark, and Simi Valley. A majority of these communities are in

3168-476: The Conejo Valley. West County, which is everything west of the Conejo Grade, consists of communities such as Camarillo , Oxnard, Somis, Point Mugu, Port Hueneme, Ventura, Ojai, Santa Paula, and Fillmore. West County consists of some of the first developed cities in the county. The largest beach communities are located in West County on the coastline of the Channel Islands Harbor. Starting in

3264-703: The King of Spain was now owned by the nation of Mexico. By the 1830s, Mission San Buenaventura was in a decline with fewer neophytes joining the mission. The number of cattle owned by the mission dropped from first to fifteenth ranking in the California Missions. The missions were secularized by the Mexican government in 1834 . The Mexican governors began granting land rights to Mexican Californians, often retiring soldiers. By 1846, there were 19 rancho grants in Ventura County. In 1836, Mission San Buenaventura

3360-703: The Las Posas-Simi area from the Santa Rosa Valley and Tierra Rejada Valley. The intermountain valley of the Santa Clara River is the most prominent valley in the county and trends east–southwest. The Santa Clara River drains an area of 1,605 square miles (4,160 km ) and flows from its headwaters in Los Angeles to where it empties into the Pacific. Its principal tributaries are Piru Creek , Santa Paula Creek, and Sespe Creek . The valley of

3456-457: The Matilija reservoir was significantly reduced by siltation from the flood. Unlike almost all of its neighbors in southern California, Ventura River watershed is 100% dependent on local water supplies. Lake Casitas serves as the major surface water supply reservoir in the watershed and groundwater is heavily relied upon. On average, surface water comprises about 55% of the water recovered from

3552-635: The Mission. Fremont and the Battalion continued south to sign the Treaty of Cahuenga with General Andrés Pico . The Treaty of Guadalupe Hidalgo formally transferred California to the United States in 1848. By 1849, a constitution had been adopted for the California territory. The new Legislature met and divided the pending state into 27 counties. At the time, the area that would become Ventura County

3648-409: The Oxnard–Thousand Oaks–Ventura, CA Metropolitan Statistical Area. The United States Census Bureau ranked the Oxnard–Thousand Oaks–Ventura, CA Metropolitan Statistical Area as the 66th most populous metropolitan statistical area of the United States as of July 1, 2012. The Office of Management and Budget has further designated the Oxnard–Thousand Oaks–Ventura, CA Metropolitan Statistical Area as

3744-622: The Revelon Slough is called Pleasant Valley. Most of the arable land in the county is found on the coastal plain. Small coastal mountains rim Ventura County on its landward side. They range in elevation from 50 feet (15 m) along the coast south of the coastal plain, to about 3,100 feet (940 m) in the Santa Monica Mountains. The Santa Ynez Mountains, the Topatopa Mountains , and the Piru Mountains make up

3840-657: The Santa Clara River, are Las Posas Valley and Simi Valley. Las Posas Valley extends eastward from the Oxnard Plain almost to Simi Valley, which is in the east end of Ventura County. The city of Simi Valley is bounded on the east by the Santa Susana Mountains and on the south by the Simi Hills. To the south, over the Camarillo- and Las Posas Hills, are Santa Rosa- and Tierra Rejada Valleys, which extend from Camarillo eastward for ten miles (16 km). In

3936-592: The Santa Clarita Valley killing as many as 600 people, destroying 1,240 homes and flooding 7,900 acres (32 km ) of land, devastating farm fields and orchards. This was the single largest disaster to strike Ventura County and the second largest, in terms of lives lost, in the state. Ventura County can be separated into two major parts, East County and West County, which are divided by the Conejo Grade . East County consists of all cities east of

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4032-474: The Ventura River. Casitas Municipal Water District sells water to both domestic and agricultural customers. The Matilija Creek, source stream and main tributary of the Ventura River, is controlled by the Matilija Dam . Completed in 1948, it was built to store 7,000 acre-feet (8,600,000 m ) of water, but sediment has reduced its capacity by 90%. The Matilija Dam was built by Ventura County, against

4128-683: The advice of the United States Army Corps of Engineers , who pointed out that the characteristics of waterways in the region would lead to sediment buildup, rendering the dam ineffective and dangerous. A major project underway to remove the Matilija Dam, in part to return access to the steelhead to spawning habitat while also enhancing the overall watershed. Since 1998, efforts to remove the dam have received regulatory approvals but little funding, with one ceremonial section last removed in 2001. The river bottom and adjacent land

4224-449: The annual total is more than thirty-three inches. The drier parts of the county get less than five inches of rain annually, and the higher and wetter parts get more than 60 inches annually. Measureable amounts of rainfall in Ventura County are reported on thirty to thirty-five days annually, and half an inch or more on six to twelve days annually. In the northern parts of Ventura County, snowfall averages five inches or more per year, and along

4320-420: The broader Ventura River estuary, which extends from where it crosses under a 101 Freeway bridge through to the Pacific Ocean. Rainfall varies geographically, seasonally, and from year to year. Median annual precipitation is 14.12 inches or 359 millimetres in the lower watershed, 19.20 inches or 488 millimetres in the middle watershed, and 28.74 inches or 730 millimetres in the upper watershed. However, even in

4416-504: The census of 2000, there were 753,197 people, 243,234 households, and 182,911 families living in the county. The population density was 408 inhabitants per square mile (158/km ). There were 251,712 housing units at an average density of 136 per square mile (53/km ). The racial makeup of the county was 69.9% White , 5.4% Asian , 2.0% Black or African American , 0.9% Native American , 0.2% Pacific Islander , 17.7% from other races , and 3.9% from two or more races. About one third (33.4%) of

4512-425: The city remains officially known as San Buenaventura, it is more commonly referred to as Ventura. The rail line to Northern California originally went through Saugus , Fillmore and Santa Paula, providing a boom to those communities along the line. In 1905, Tunnel #26 was completed between Chatsworth and Corriganville near Simi Valley, shortening the rail route. At a length of 7,369 feet (2,246 m), Tunnel #26

4608-481: The completion of Casitas Dam , which forms Casitas Reservoir . The dam is on Coyote Creek about 2 miles upstream of the junction with the Ventura River. The Robles Diversion Dam was constructed on the Ventura River in 1958 to divert up to 107,800 acre-feet of water per year through a four-and-a-half mile canal to Casitas Reservoir. About 40% of the total water in Lake Casitas is supplied from high winter flows in

4704-403: The county government is responsible for housing goals in unincorporated areas. Several affordable housing groups that are actively working on building housing for veterans and low income people have long waiting lists. Farmworker housing also has waiting lists though designated units continue to be built. The United States Office of Management and Budget has designated Ventura County as

4800-537: The county include Mount Pinos (8,831 ft; 2,692 m), Frazier Mountain (8,017 ft; 2,444 m), and Reyes Peak (7,525 ft; 2,294 m) in the Transverse Ranges . The uplands are well-timbered with coniferous forests , and receive plentiful snow in the winter. Mount Pinos is sacred to the Chumash Indians. It is known to them as Iwihinmu, and was considered to be the center of

4896-497: The county's total area is made up of national forest. Of the land outside of national forest land, approximately 59 percent is agricultural and 17.5 percent urban. North of Highway 126, the county is mountainous and mostly uninhabited, and contains some of the most unspoiled, rugged and inaccessible wilderness remaining in southern California. Most of this land is in the Los Padres National Forest , and includes

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4992-653: The early intellectual founders of the Franciscan order. The town that grew up around the mission was originally named San Buenaventura (and retains the name officially), it has been known as Ventura since 1891. In the 1790s, the Spanish Governor of California began granting land concessions to Spanish Californians who were often retiring soldiers. These concessions were known as ranchos and consisted of thousands of acres of land that were used primarily as ranch land for livestock. In Ventura County, Rancho Simi

5088-484: The expedition, Father Juan Crespí , kept a journal of the trip and noted that the area was ideal for a mission to be established and it was a "good site to which nothing is lacking". Also on this expedition was Father Junípero Serra , who later founded a mission on this site. On March 31, 1782, the Mission San Buenaventura was founded by Father Serra. It is named after Saint Bonaventure , one of

5184-506: The fire caused over $ 2.176 billion (2018 USD) in damages, including more than $ 204.5 million in suppression costs, becoming the seventh-most destructive wildfire in state history. The agriculture industry suffered at least $ 171 million in losses due to the Thomas Fire. Southern California Edison paid the county over $ 11 million in claims related to damages and costs since its equipment was likely associated with one ignition point of

5280-419: The fire near Santa Paula. According to the U.S. Census Bureau , the county has a total area of 2,208 square miles (5,720 km ), of which 1,843 square miles (4,770 km ) is land and 365 square miles (950 km ) (16.5%) is water. Parts of the county are on the Oxnard Plain which includes the cities of Oxnard , Camarillo , Port Hueneme and much of Ventura . Other cities and communities lie in

5376-488: The first high school opening in 1890. Other towns were being established in the county. A plan for Hueneme (later Port Hueneme) was recorded in 1874, and Santa Paula 's plan was recorded in 1875. Along the banks of the Santa Clara River, the township of New Jerusalem (which would eventually be named El Rio ) was founded in 1875 by the owner of general store named Simon Cohen who became its first postmaster and banker in 1882. The community of Nordhoff (later renamed Ojai )

5472-575: The hills north of Ventura, was producing 90,000 barrels (14,000 m ) of oil a day, with annual production of over 1.5   million barrels. More oil fields came online in the 1920s and 1930s, with the Rincon field , the second largest, in 1927, and the adjacent San Miguelito in 1931. In the early hours of the morning of March 12–13, 1928, the St. Francis Dam collapsed, sending nearly 12,500 million U.S. gallons (47 gigaliters) of water rushing through

5568-677: The hills south of Santa Rosa Valley is the broad Conejo Valley. Santa Rosa Valley, Conejo Valley, Simi Valley, and Tierra Rejada Valley are drained by Calleguas Creek and its principal tributary, Conejo Creek. These creeks originate in the Santa Susana and Santa Monica Mountains . The county's diverse 43-mile (69 km) coastline features a variety of terrain. There are many State beaches: Emma Wood , San Buenaventura , McGrath , and Mandalay State Beach . Other beaches include Channel Islands Beach , Solimar Beach , Oxnard Beach Park , and Silver Strand Beach . While Point Mugu State Park

5664-538: The intermountain valleys of the Transverse Range. The Santa Clara River Valley is the most prominent valley, while other valleys include Conejo Valley , Simi Valley , Santa Rosa Valley , Tierra Rejada Valley and Las Posas Valley. Other parts of the county are on small coastal mountains, such as the Santa Ynez Mountains , Simi Hills , Santa Monica Mountains and the Piru Mountains. Most of

5760-612: The last 10 years. The Thomas Fire was a massive wildfire that affected Ventura and Santa Barbara Counties, and one of multiple wildfires that ignited in Southern California in December 2017. It burned approximately 281,893 acres (440 sq mi; 114,078 ha), becoming the largest wildfire in modern California history , before it was fully contained on January 12, 2018. The Thomas Fire destroyed at least 1,063 structures, while damaging 280 others; and

5856-617: The lingering smell in the dirt to uncover artifacts that showed heavy utilization by mission inhabitants, Indians, early settlers and Spanish and Mexican soldiers. The Mexican–American War began in 1846 but its effect was not felt in Ventura County until 1847. In January of that year, Captain John C. Frémont led the California Battalion into San Buenaventura to find that the Europeans had fled, leaving only Native Americans in

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5952-416: The mainland for trade with the Chumash of the Channel Islands were located at the mouth of the Ventura River , Mugu Lagoon and Point Hueneme. This has led to speculations among archeologists of whether the Chumash could have had a pre-historic contact with Polynesians . According to diachronic linguistics , certain words such as tomolo'o (canoe) could be related to Polynesian languages . The dialect of

6048-512: The mid-20th century, there was a large growth in population in the East County, moving from the San Fernando Valley in Los Angeles and out into the Conejo and Simi Valleys. Part of the Conejo Valley is situated in Los Angeles County . This part consists of Calabasas , Hidden Hills , Agoura Hills , Agoura , and Westlake Village . The other half of the Conejo Valley, which belongs to Ventura County, consists of Lake Sherwood , Hidden Valley , Oak Park , Thousand Oaks , and Newbury Park , which

6144-485: The mountain for W. Herbert Allen, who had donated land for nearby Camp Circle X and other Boy Scout camps. He served as president of the Los Angeles Area Council . The board denied the request because of a long-standing policy not to approve a geographic name in commemoration of a living person. The land is now known as the Circle X Ranch , a park unit located in the Santa Monica Mountains National Recreation Area . This Ventura County, California –related article

6240-689: The northern border and Mount Pinos, more than twenty inches. Automobile emissions account for most of the air pollution . Other sources include chemical plants , gasoline stations , paint and cleaning products . Rivers in Ventura County include: The 2010 United States Census reported that Ventura County had a population of 823,318. The racial makeup of Ventura County was 565,804 (68.7%) White , 15,163 (1.8%) African American , 8,068 (1.0%) Native American , 55,446 (6.7%) Asian , 1,643 (0.2%) Pacific Islander , 140,253 (17.0%) from other races , and 36,941 (4.5%) from two or more races. Hispanic or Latino of any race were 331,567 persons (40.3%). As of

6336-464: The northern boundary of the coastal plain, the Santa Susana Mountains are alongside the eastern boundary of the county, and the Simi Hills and the Santa Monica Mountains are along the southern border with Los Angeles County . South Mountain and Oak Ridge are low and long mountains that separate Santa Clara Valley from the Las Posas Valley and Simi Valley . The Camarillo Hills and the Las Posas Hills extend from Camarillo to Simi Valley and separate

6432-412: The northern parts of Ventura County. No temperature data are available for the highest point in the county, Mount Pinos . The length of the growing season ranges more than 300 days near the coast to less than 175 days in the coldest part in northern Ventura County. In both the northern and southern ends of the county, the annual precipitation totals between ten and fifteen inches. In the Topatopa Mountains,

6528-406: The petroleum products under Ventura County but none were financially successful, and the oil speculators eventually changed from oil to land development. In 1913, oil exploration began in earnest, with Ralph Lloyd obtaining the financial support of veteran oil man Joseph B. Dabney. Their first well, named "Lloyd No. 1", was started on January 20, 1914. The well struck oil at 2,558 feet (780 m) but

6624-537: The population is Hispanic or Latino of any race. 9.8% were of German, 7.7% English and 7.1% Irish ancestry according to Census 2000 . 67.1% spoke English, 26.2% Spanish and 1.5% Tagalog as their first language. There were 243,234 households, of which 39.7% had children under the age of 18 living with them, 59.5% were married couples living together, 10.9% had a female householder with no husband present, and 24.8% were non-families. 18.9% of all households were made up of individuals, and 7.4% had someone living alone who

6720-431: The population of Ventura County lives in the southern portion of the county. The major population centers are the Oxnard Plain and the Simi and Conejo Valleys. In local media, the county is usually split between the eastern portion, generally associated with the San Fernando Valley , and the western portion, often referred to as “Oxnard-Ventura". To the east is Los Angeles County . Because the total amount of precipitation

6816-431: The river, hurting habitat for steelhead trout and other wildlife. The city filed a cross-complaint in response to bring in other users of the river, including the Casitas Municipal Water District. Mediation talks began among major users of the Ventura River. The Ojai Valley Sanitary District collection system operates within the watershed. The flow of the Ventura River and its tributary Coyote Creek have been reduced by

6912-654: The river, is being actively pursued by a coalition of stakeholders. State Route 33 also roughly parallels the river through the Ventura River Valley. A portion of SR 33, north of the SR 150 , is officially designated as a state scenic highway , and the entire Ventura River Valley section is eligible for the designation. The watershed is a recreation destination for hikers, walkers, bikers, surfers, campers, fishermen, boaters, backpackers, equestrians, and birders, as well as artists, spiritual seekers, and students of natural history. Many local organizations are committed to providing

7008-628: The site must be cleaned up or daily fines would be sought from the owner. In 2015, the site owner agreed to remove all machinery and equipment, which would complete the cleanup of the plant. Rainfall in the Matilija Wilderness , the river's headwaters, is the highest in Ventura County, with average annual rainfall that is over twice that of rainfall at the coast. The steep terrain of the Ventura River watershed, coupled with intense downpours that can occur in its upper portions, result in flash flood conditions where floodwaters rise and fall in

7104-404: The subhumid upper basin, rainfall is infrequent – falling on as few days in a year as in hot, arid Phoenix , Arizona – but when rain does fall it can be extremely heavy with totals of 20 inches or 510 millimetres in a week not uncommon in the middle and upper basins. Consequently, cycles of drought and flood are the norm: as an illustration, in the main settlement of Ojai since 1906, 67 percent of

7200-471: The town of San Buenaventura was incorporated, becoming the first officially recognized town in what would become Ventura County. On January 1, 1873, Ventura County was officially split from Santa Barbara County, bringing a flurry of change. That same year, a courthouse and wharf were built in San Buenaventura. A bank was opened and the first public library was created. The school system grew, with

7296-407: The train stop. That community, now bearing the name of the factory shortened to the one word train stop Oxnard, has become the largest city in Ventura County. Oil has been known in Ventura County since before the arrival of the Europeans, as the native Chumash people used tar from natural seeps as a sealant and waterproofing for baskets and canoes. In the 1860s, several attempts were made to harvest

7392-538: The universe; being the highest peak in the vicinity, it has unimpeded views in three directions. The USDA Economic Research Service rated Ventura County the most desirable county to live in the 48 contiguous states, using six metrics of climate ("mild, sunny winters, temperate summers, low humidity"), topographic variation, and access to water, "that reflect environmental qualities most people prefer." There are 555,953 acres (224,986 ha) outside of national forest land in Ventura County, which means that 53 percent of

7488-410: The watershed and groundwater comprises about 45%. Cycles of drought and flooding occur regularly. Annual rainfall in downtown Ojai has ranged from a low of seven inches to a high of 49 inches—a sevenfold variation. Because the annual amount of rainfall received is highly variable, water supplies must be managed with caution. Two small coastal watersheds—the North Ventura Coastal Streams watershed and

7584-475: The watershed remain natural and undeveloped, with 57% of its land area in protected status. Most of the watershed's primary streams and drainages are unchannelized, though the natural hydrologic patterns have been modified by two dams (the Casitas and Matilija) and three levees (the Ventura River, Casitas Springs, and Live Oak). Developed land (excluding grazing) comprises only about 13% of the total land area in

7680-433: The watershed, 13-mile inland (21 km) at an elevation of 746 feet (227 m). Only 13% of the larger city of Ventura lies within the watershed, adjacent to the coast on the lower stretch of the Ventura River. The population of the watershed is relatively small and the rate of growth low. The population is approximately 44,140, which represents just 5.4% of Ventura County's population (as of 2010 Census). The population

7776-638: The watershed. The watershed is home to numerous protected species and habitats, including 137 plants and animals protected at either the federal, state, or local level. The federally endangered southern California steelhead (listed in 1997) is of particular importance, given the watershed's often dry and always variable climate. The steelhead found in the Ventura River are part of the Southern California Steelhead Distinct Population Segment (DPS) were listed as federally endangered . Genetic analysis of

7872-424: The watershed. The northern half of the watershed lies within Los Padres National Forest . The watershed's southern half has agriculture as the dominant land use, with irrigated citrus and avocados as the primary crops while a significant area of land is used for cattle grazing. The populated area includes two cities and a number of unincorporated communities. The smaller of the two cities, Ojai , lies entirely within

7968-404: The way for development westward. The communities that have seen the most substantial development are Calabasas, Hidden Hills, Agoura Hills, Westlake Village, Thousand Oaks, and Newbury Park. The neighboring East County area of Simi Valley saw its already considerable population of nearly 60,000 inhabitants in 1970 grow to over 100,000 over the following two decades. Development moved farther down

8064-540: The wind"), and Sespe Creek from the word S'eqp'e (meaning "kneecap"). In October 1542, the expedition led by Juan Rodríguez Cabrillo anchored in an inlet near Point Mugu ; its members were the first Europeans to arrive in the area that would become Ventura County. Active occupation of California by Spain began in 1769. Gaspar de Portolà led a military expedition by land from San Diego to Monterey , passing through Ventura County in August of that year. A priest with

8160-431: The years have had less than the mean rainfall. Many parts of the Ventura River stream network are typically dry during much of the year. Surface water readily disappears underground in some stream reaches (segments); in others, groundwater regularly feeds streamflow. The watershed's rugged topography, largely undeveloped status, and Mediterranean climate combine to make for an area of exceptional biodiversity. It supports

8256-591: Was $ 66,859, while the mean was $ 85,032. Per capita income was up to $ 29,634, making it the 6th wealthiest county in California. Ventura County typically has limited housing inventory, making it a consistently expensive location in Southern California, where it is usually the third-most-expensive county behind Orange and Los Angeles counties. As of March 2018 , the county was not on track to meet its state-mandated housing goals. Individual cities are responsible for meeting their assigned housing goals, while

8352-448: Was 65 years of age or older. The average household size was 3.04 and the average family size was 3.46. In the county, the population was spread out, with 28.4% under the age of 18, 9.0% from 18 to 24, 30.7% from 25 to 44, 21.7% from 45 to 64, and 10.2% who were 65 or older. The median age was 34 years. For every 100 females, there were 99.7 males. For every 100 females age 18 and over, there were 97.5 males. The median income for

8448-454: Was built on an abandoned railroad spur (CA_VEN-1109H) that was constructed by the Ventura and Ojai Valley Railroad in 1898 and acquired by Southern Pacific in 1899. The rail trail , that runs along the easterly bank of the river, was designated a National Recreation Trail in 2014. The "Ventura River Trail" part of the trail (completed in 1999) extends from the coast to Foster Park, and

8544-587: Was destroyed when it went wild. Other wells met a similar fate, until 1916, when a deal was struck with the Shell Oil Company . 1916 was the year that the large South Mountain Oil Field was discovered; other deals followed with General Petroleum in 1917 and Associated Oil Company in 1920. At its peak, the largest oil field in the county, the Ventura Avenue oilfield , discovered in 1919 in

8640-480: Was formerly an unincorporated area that is now the most westerly part of Thousand Oaks. Many working-class people migrated to this area during the 1960s and 1970s out of East and Central Los Angeles . As a result, there was a large growth in population into the Conejo Valley and into Ventura County through the U.S. Route 101 corridor. Making the U.S. 101 a full freeway in the 1960s, and the expansions that followed, helped make commuting to Los Angeles easier and opened

8736-573: Was granted in 1795 and Rancho El Conejo in 1802. Fernando Tico was granted Ojai and part of Ventura by Gov. Alvarado. In 1822, California was notified of Mexico's independence from Spain and the Governor of California , the Junta, the military in Monterey and the priests and neophytes at Mission San Buenaventura swore allegiance to Mexico on April 11, 1822. California land that had been vested in

8832-417: Was seriously damaged or destroyed. All over Ventura County, transportation facilities, including roads, bridges, and railroad tracks, were damaged. The wastewater treatment plant below Foster Park was severely damaged and dumped raw sewage into the Ventura River. In addition, sewer trunk lines were broken along the Ventura River and San Antonio Creek. Untreated sewage polluted the river and beach. The capacity of

8928-454: Was started in 1874. Bardsdale , Fillmore , Piru , and Montalvo were established in 1887. 1892 saw Simi (later Simi Valley), Somis , Saticoy , and Moorpark . Oxnard was a latecomer, not being established until 1898. The Southern Pacific Railroad laid tracks through San Buenaventura in 1887. For convenience in printing their timetables, Southern Pacific shortened San Buenaventura to Ventura. The Post Office soon followed suit. While

9024-507: Was the longest tunnel ever constructed in its day. This tunnel joined to the railroad spur coming the other direction from Montalvo through Camarillo, Moorpark and Simi Valley, making the contemporary main line used today. One stop along the way, at a 90-degree turn, was at a sugar beet processing factory. The factory bore the name of its absentee owners, the Oxnard Brothers. A small community of farm and factory workers grew near

9120-416: Was the southern part of Santa Barbara County . The 1860s brought many changes to the area. A drought caused many of the ranchos to experience financial difficulties and most were divided, sub-divided and sold. Large sections of land were bought by eastern capitalists based on favorable reports of petroleum deposits. A United States Post Office was opened at Mission San Buenaventura in 1861. On April 1, 1866,

9216-535: Was transferred from the Church to a secular administrator. The natives who had been working at the mission gradually left to work on the ranchos. By 1839, only 300 Indians were left at the Mission and it slipped into neglect. Several outhouses dating back to the 1800s were discovered in July 2007, at a site that had been cleared to prepare for development. The area proved to be a treasure trove for archaeologists who braved

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