Contra Costa County is a county in the state of California in the United States. As of the 2010 census, the population was 1,049,025. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area, and is primarily suburban. The county's name is Spanish for "opposite coast", referring to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Hayward, CA Metropolitan Statistical Area.
Diablo wind is a name that has been occasionally used for the hot, dry wind from the northeast that typically occurs in the San Francisco Bay Area of Northern California, during the spring and fall. The same wind pattern also affects other parts of California's coastal ranges. The term first appeared shortly after the 1991 Oakland firestorm, perhaps to distinguish it from the comparable, and more familiar, hot dry wind in Southern California known as the Santa Ana winds. In fact, in decades previous to the 1991 fire, the term "Santa Ana" was occasionally used as well for the Bay Area dry northeasterly wind, such as the one that was associated with the 1923 Berkeley Fire.
Mount Diablo is a mountain of the Diablo Range, in Contra Costa County of the eastern San Francisco Bay Area in Northern California. It is south of Clayton and northeast of Danville.
The Tri-Valley area is a triangle-shaped region of the eastern San Francisco Bay Area, 18 miles southeast of Oakland and 33 miles from San Francisco. It encompasses the cities of Pleasanton, Livermore, Dublin and San Ramon, the town of Danville and the CDPs of Alamo, Blackhawk and Diablo.
Diablo Valley College (DVC) is a community college with campuses in Pleasant Hill and San Ramon in Contra Costa County, California.
The Diablo Range is a mountain range in the California Coast Ranges subdivision of the Pacific Coast Ranges. It is located in the eastern San Francisco Bay area south to the Salinas Valley area of northern California, the United States.
The San Ramon Valley is a valley and region in Contra Costa County in the East Bay region of the San Francisco Bay Area in northern California.
Morgan Territory is a region in California on the east side of Mount Diablo in the San Francisco East Bay's Contra Costa County. The area is named for settler Jeremiah Morgan.
The North Coast Section (NCS) is a part of the California Interscholastic Federation, governing the eastern portion of the San Francisco Bay Area, up along the northern coast of the state of California, from Fremont in the south to Crescent City in the north. It also governs the private schools in the city of Oakland. Due to this split in regions, the section is split in two for some championships, including football.
KKDV is an Adult Contemporary radio station located in Walnut Creek, California, broadcasting at 92.1 MHz. With the call letters KKDV, it broadcasts under the slogan "Diablo Valley's Hometown Station." The station serves central Contra Costa County including the Diablo Valley close to Mt. Diablo.
The Chochenyo are one of the divisions of the indigenous Ohlone (Costanoan) people of Northern California. The Chochenyo resided on the east side of the San Francisco Bay, primarily in what is now Alameda County, and also Contra Costa County, from the Berkeley Hills inland to the western Diablo Range.
Mount Diablo Unified School District (MDUSD) is a public school district in Contra Costa County, California. It currently operates 29 elementary schools, 9 middle schools, and 5 high schools, with 7 alternative school programs and an adult education program. MDUSD is one of the largest school districts in the state of California, with over 56 school sites and a budget of approximately $270,000,000. The district has over 36,000 K-12 students, over 20,000 adult education students, and over 3,500 employees, including over 2,000 certificated educators. The district covers 150 square miles (390 km2), including the cities of Concord and Clayton; as well as most of Pleasant Hill and portions of Walnut Creek, Pittsburg, Lafayette, and Martinez; and unincorporated areas, including Pacheco, Clyde, and Bay Point.
The Contra Costa Community College District is a community college district that encompasses three community colleges in Contra Costa County, California - Contra Costa College, Diablo Valley College and Los Medanos College. The headquarters is in the George R. Gordon Education Center in Martinez, California.
Briones Regional Park is a 6,117-acre (24.75 km2) regional park in the East Bay Regional Park District (EBRPD) system, located in the Briones Hills of central Contra Costa County of the San Francisco Bay Area in California.
Livermore Valley, formerly Valle De San Jose, is a valley in eastern Alameda County, in the East Bay region of the San Francisco Bay Area, northern California.
KVHS is a non-profit high school radio station playing an Active Rock music format. It is licensed to Clayton Valley High School under the jurisdiction of the Mount Diablo Unified School District and broadcasts from the campus of Clayton Valley Charter High School, Concord, California, USA. The signal reaches the counties of Contra Costa, Solano, Napa, San Joaquin, West Sacramento and Yolo, and KVHS primarily serves the Diablo Valley area.
The Concord Fault is a geologic fault in the San Francisco Bay Area. It is so called because it is located under the city of Concord. It is connected to, and considered to be part of, the same fault zone as the Green Valley fault, which lies just a few miles to the north across the Suisun Bay. The fault is situated at the east of West Napa Fault and extends from Mount Diablo to the Carquinez Strait, an approximately 11 mile long distance. Like most other faults in this area, the Concord Fault is a strike-slip fault, moving approximately 2.7 to 3.6 millimeters a year.
