Searles Valley, California

Last updated

Searles Valley
Census-designated place
01-2007-Trona-CA-01.jpg
The Searles Valley Inc. plant dominates the community
San Bernardino County California Incorporated and Unincorporated areas Searles Valley Highlighted.svg
Location in San Bernardino County and the state of California
Usa edcp location map.svg
Red pog.svg
Searles Valley
Location in the United States
Coordinates: 35°45′55″N117°22′58″W / 35.76528°N 117.38278°W / 35.76528; -117.38278
Country Flag of the United States (23px).png  United States
State Flag of California.svg  California
County San Bernardino
Area
[1]
 • Total10.494 sq mi (27.180 km2)
 • Land10.494 sq mi (27.180 km2)
 • Water0 sq mi (0 km2)  0%
Population
 (2010)
 • Total1,739
 • Density170/sq mi (64/km2)
Time zone UTC-8 (PST)
 • Summer (DST) UTC-7 (PDT)
ZIP code
93562
Area code 760
FIPS code 06-70728
GNIS feature ID2409296

Searles Valley is a census-designated place (CDP) in the Searles Valley of the Mojave Desert, in northwestern San Bernardino County, California.

Contents

Geography

Searles Valley includes the unincorporated communities of Argus, Pioneer Point, Searles Valley (town), and Trona. Searles Valley is located at 35°45′55″N117°22′58″W / 35.765181°N 117.382803°W / 35.765181; -117.382803 (35.765181, -117.382803). [2]

Searles Valley CDP is at the western edge of Searles Lake, a dry lakebed in the lowest part of the Searles Valley.

Searles Valley CDP is about 170 miles northeast of Los Angeles, on State Route 178. It is southwest of Death Valley and the Panamint Range. Ridgecrest and China Lake are to the west.

According to the United States Census Bureau, Searles Valley has a total area of 27.2 km2 (10.5 mi2), all land. The population was 1,739 at the 2010 census. The ZIP code is 93562 and the area code 760.

Natural history

The Searles Lake is an endorheic dry lake formed by the evaporation of lakes during the late Quaternary period. It contains rich deposits of chemicals, including borax and rock salt. [3]

Searles Valley is known for its isolation and desolation, [4] as well as the nearby Trona Pinnacles a few miles to the south. The Trona Pinnacles are an unusual landscape of more than 500 tufa spires, some as high as 140 feet, rising from the bed of the Searles Lake basin.

The name Trona is derived from the mineral trona, abundant in the lake. The local school plays on a dirt football field because the high level of salt kills grass.

2019 earthquakes

In July 2019, Searles Valley was impacted by a series of earthquakes, the principal events (with magnitudes of 6.4, 5.4, and 7.1 Mw ) occurring from 12 to 18 kilometers west on the Naval Air Weapons Station China Lake. [5] The earthquake series started at 10:02 AM on July 4 with a Mw 4.0 earthquake 4 kilometers southwest of Searles Valley. At 10:33 AM a second and much stronger earthquake struck – a 6.4 magnitude quake 12 kilometers southwest of Searles Valley. [6] The earthquake was felt throughout the area and Southern California, including Los Angeles, and in Nevada, including Las Vegas. The earthquake was 10.5 kilometers deep. [7] Over 100 aftershocks impacted Searles Valley and nearby Ridgecrest, California.[ citation needed ] This second quake was followed by an even larger 7.1 magnitude quake, subsequently designated the main quake in the series, on Friday, July 5, 2019, at approximately 8:18 PM.

Approximately 6:36 PM on July 22, 2019, the valley received a 3.9 magnitude quake.

Government

In the state legislature Searles Valley is located in California's 16th State Senate district, represented by Republican Roy Ashburn, and in California's 33rd State Assembly district, represented by Republican Tim Donnelly.

Demographics

2010

The 2010 United States Census [8] reported that Searles Valley had a population of 1,739. The population density was 165.7 inhabitants per square mile (64.0/km2). The racial makeup of Searles Valley was 1,405 (80.8%) White (72.3% Non-Hispanic White), [9] 69 (4.0%) African American, 56 (3.2%) Native American, 16 (0.9%) Asian, 6 (0.3%) Pacific Islander, 83 (4.8%) from other races, and 104 (6.0%) from two or more races. Hispanic or Latino of any race were 293 persons (16.8%).

The Census reported that 1,739 people (100% of the population) lived in households, 0 (0%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.

There were 722 households, out of which 215 (29.8%) had children under the age of 18 living in them, 309 (42.8%) were opposite-sex married couples living together, 92 (12.7%) had a female householder with no husband present, 52 (7.2%) had a male householder with no wife present. There were 48 (6.6%) unmarried opposite-sex partnerships, and 3 (0.4%) same-sex married couples or partnerships. 223 households (30.9%) were made up of individuals, and 80 (11.1%) had someone living alone who was 65 years of age or older. The average household size was 2.41. There were 453 families (62.7% of all households); the average family size was 3.01.

The population was spread out, with 436 people (25.1%) under the age of 18, 171 people (9.8%) aged 18 to 24, 342 people (19.7%) aged 25 to 44, 515 people (29.6%) aged 45 to 64, and 275 people (15.8%) who were 65 years of age or older. The median age was 40.7 years. For every 100 females, there were 104.1 males. For every 100 females age 18 and over, there were 101.4 males.

There were 961 housing units at an average density of 91.6 per square mile (35.4/km2), of which 439 (60.8%) were owner-occupied, and 283 (39.2%) were occupied by renters. The homeowner vacancy rate was 1.5%; the rental vacancy rate was 8.4%. 1,041 people (59.9% of the population) lived in owner-occupied housing units and 698 people (40.1%) lived in rental housing units.

According to the 2010 United States Census, Searles Valley had a median household income of $32,448, with 21.7% of the population living below the federal poverty line. [10]

2000

As of the 2000 United States Census [11] of 2000, there were 1,885 people, 738 households, and 495 families residing in the CDP. The population density was 61.9/km2 (160.5/mi2). There were 1,051 housing units at an average density of 34.5/km2 (89.5/mi2). The racial makeup of the CDP was 86.3% White, 1.5% African American, 2.4% Native American, 0.7% Asian, 0.4% Pacific Islander, 5.0% from other races, and 3.7% from two or more races. Hispanic or Latino of any race were 16.2% of the population.

There were 738 households, out of which 33.2% had children under the age of 18 living with them, 49.3% were married couples living together, 12.9% had a female householder with no husband present, and 32.9% were non-families. 29.3% of all households were made up of individuals, and 10.6% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.16.

In the CDP, the population was spread out, with 30.9% under the age of 18, 8.2% from 18 to 24, 25.3% from 25 to 44, 24.9% from 45 to 64, and 10.7% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 104.2 males. For every 100 females age 18 and over, there were 99.1 males.

The median income for a household in the CDP was $35,833, and the median income for a family was $37,143. Males had a median income of $44,397 versus $35,625 for females. The per capita income for the CDP was $16,861. About 18.2% of families and 21.4% of the population were below the poverty line, including 33.0% of those under age 18 and 10.1% of those age 65 or over.

See also

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Trona is an unincorporated community in San Bernardino County, California. In 2015 it had a population of approximately 1,900. Trona is at the western edge of Searles Lake, a dry lake bed in Searles Valley, southwest of Death Valley. The town takes its name from the mineral trona, abundant in the lakebed. It is about 170 miles (274 km) northeast of Los Angeles, on State Route 178. The ZIP code is 93562.

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The 2019 Ridgecrest earthquakes of July 4 and 5 occurred north and northeast of the town of Ridgecrest, California located in Kern County and west of Searles Valley. They included three initial main shocks of Mw magnitudes 6.4, 5.4, and 7.1, and many perceptible aftershocks, mainly within the area of the Naval Air Weapons Station China Lake. Eleven months later, a Mw  5.5 aftershock took place to the east of Ridgecrest. The first main shock occurred on Thursday, July 4 at 10:33 a.m. PDT, approximately 18 km (11.2 mi) ENE of Ridgecrest, and 13 km (8.1 mi) WSW of Trona, on a previously unnoticed NE-SW trending fault where it intersects the NW-SE trending Little Lake Fault Zone. This quake was preceded by several smaller earthquakes, and was followed by more than 1,400 detected aftershocks. The M 5.4 and M 7.1 quakes struck on Friday, July 5 at 4:08 a.m. and 8:19 p.m. PDT approximately 10 km (6 miles) to the northwest. The latter, now considered the mainshock, was the most powerful earthquake to occur in the state in 20 years. Subsequent aftershocks extended approximately 50 km (~30 miles) along the Little Lake Fault Zone.

References

  1. ↑ "2010 Census U.S. Gazetteer Files – Places – California". United States Census Bureau.
  2. ↑ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  3. ↑ Smith, George Irving; Haines, David Vincent (1964). Character and Distribution of Nonclastic Minerals in the Searles Lake Evaporite Deposit, California. U.S. Government Printing Office. Retrieved September 9, 2018.
  4. ↑ David Kelly, Stark Beauty, Solitude, Squalor and Sulfur -- Trona Has It All, The Los Angeles Times, October 4, 2006, Accessed December 28, 2006.
  5. ↑ ANSS. "Ridgecrest 2019a: M 6.4 - 12km SW of Searles Valley, CA". Comprehensive Catalog. U.S. Geological Survey. ANSS: Ridgecrest 2019a .; ANSS. "Ridgecrest 2019b: M 5.4 - 16km W of Searles Valley, CA". Comprehensive Catalog. U.S. Geological Survey.; ANSS. "Ridgecrest 2019c: M 7.1 - 18km W of Searles Valley, CA". Comprehensive Catalog. U.S. Geological Survey.
  6. ↑ ANSS: Ridgecrest 2019a .
  7. ↑ "M 6.4 - Ridgecrest Earthquake Sequence". USGS Earthquake Hazards Program. Retrieved October 27, 2021.
  8. ↑ "2010 Census Interactive Population Search: CA - Searles Valley CDP". U.S. Census Bureau. Archived from the original on July 15, 2014. Retrieved July 12, 2014.
  9. ↑ Bureau, U.S. Census. "U.S. Census website". United States Census Bureau .
  10. ↑ Bureau, U.S. Census. "U.S. Census website". United States Census Bureau .
  11. ↑ "U.S. Census website". United States Census Bureau . Retrieved January 31, 2008.
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