Tri-Valley

{{Infobox settlement

| name = Tri-Valley

| native_name =

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| settlement_type = Area of the East Bay

| image_skyline = File:Tri-Valley_Landscape.jpg

| image_alt = Tri-Valley Landscape

| image_caption = Tri-Valley Landscape

| etymology =

| image_map = File:East Bay California Incorporated and Unincorporated areas Tri-valley Highlighted.svg

| map_alt = Tri-Valley location in CA

| map_caption = Tri-Valley location in California

| pushpin_map = USA

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| pushpin_map_caption = Location in the United States

| coordinates = {{coord|37|39|45|N|121|52|29|W|region:US-CA|display=inline,title}}

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| subdivision_type = Country

| unit_pref = Metric

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| population_total = 401,072

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| timezone1 = Pacific Time Zone

| utc_offset1 = -8

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The Tri-Valley area is grouping of three valleys in the East Bay region of California's Bay Area. The three valleys are Amador Valley, Livermore Valley, and San Ramon Valley. The Tri-Valley encompasses the cities of Dublin, Livermore, Pleasanton and San Ramon, the town of Danville, and the CDPs of Alamo, Blackhawk, Camino Tassajara, Diablo, and Norris Canyon. The area is known for its Mediterranean climate, wineries, and nature. It is primarily suburban in character. The total population of the Tri-Valley was 401,072 at the 2020 U.S. Census. It offers more affordable living accommodations than the cities of San Francisco and San Jose.{{cite web|url=https://www.cbsnews.com/pictures/10-most-expensive-cities-in-america|title=10 Most Expensive Cities in America|author=CBS|date=2017|publisher=CBS}}{{cite web

|url = https://www.cbsnews.com/pictures/10-most-expensive-cities-in-america

|title = 10 Most Expensive Cities in America

|author = CBS

|date = 2017

|publisher = CBS

}}

History

The Ohlone tribe settled the area circa 2000 BC, particularly in the northern part of Pleasanton. In AD 1772, however, Spanish settlers involved with the nearby mission work at Mission San Jose restructured the Ohlone way of life.{{Cite web |title=Chapter 9. Ohlone/Costanoans in the United States, 1847-1927 |url=https://www.nps.gov/goga/learn/historyculture/upload/Chapter-9.pdf |access-date=11 February 2023}}{{Cite web|url=http://pleasanton.com/channel/History-of-Pleasanton/4821|title=History of Pleasanton|website=pleasanton.com|language=en|url-status=dead|archive-url=https://web.archive.org/web/20171108011655/http://pleasanton.com/channel/History-of-Pleasanton/4821|archive-date=November 8, 2017|access-date=2018-01-01}}

The area began to be developed when the Gold Rush ended. During this period, the area went from being marshland to agricultural.{{Cite web|url=http://www.museumonmain.org/history-of-pleasanton.html|title=History of Pleasanton|website=Museum on Main|access-date=2018-01-01}}

Climate

The climate of the Tri-Valley is mild. Most rain falls in the winter. Snow almost never occurs, although it sometimes falls on the tops of surrounding mountains, especially Mt. Diablo. Summer days are in the 80s to over 100 °F, but nights are often cool. In winter, daytime temperatures reach the 50s and 60s, while nights are in the 30s and 40s, dipping on rare occasions into the 20s. Mean annual rainfall ranges from about {{cvt|14|in|mm}} in Livermore to {{cvt|23|in|mm}} in Alamo.{{Cite web|url=https://wrcc.dri.edu|title=Cooperative Climatological Data Summaries|website=Western Regional Climate Center|access-date=2018-11-24}}

Transportation

The Tri-Valley is serviced by WHEELS, operated by the Livermore Amador Valley Transit Authority (LAVTA), a bus agency that operates local bus service throughout Livermore, Pleasanton and Dublin, including service to Hacienda Business Park, Lawrence Livermore National Laboratory, Las Positas College, Stoneridge Mall, the West Dublin/Pleasanton BART Station and the Dublin/Pleasanton BART station.

Two major highways, Interstates 580 and 680 cross the Tri-Valley area. Interstate 580 runs east-west, connecting the area to the Central Valley to the east and the North Bay area to the west. Interstate 680 runs north-south, connecting the area to the South Bay area in the south, and the Concord-Walnut Creek area in the north. The two interstates cross on the border of Dublin and Pleasanton.

The Tri-Valley area is also serviced by BART, offering service to the rest of the San Francisco Bay Area via two stops: West Dublin/Pleasanton and the Dublin/Pleasanton terminus station.{{Cite web|url=http://www.bart.gov/stations|title=Station List {{!}} bart.gov|website=www.bart.gov|language=en|access-date=2018-01-01}} The West Dublin/Pleasanton Station opened in 2011, and was the first infill station on an existing line. In 2018, BART cancelled plans{{Cite web|url=https://www.bart.gov/about/projects/liv|title=Livermore Extension {{!}} bart.gov|website=www.bart.gov|language=en|access-date=2019-06-13}} to extend the line to Livermore. However, the Tri-Valley–San Joaquin Valley Regional Rail Authority is in the planning process{{Cite web|url=http://www.acetobart.org|title=ValleyLink|website=www.acetobart.org|language=en|access-date=2019-06-13}} for a rail connection between BART, ACE, and the San Joaquin Valley called the Valley Link.

File:Tri-Valley-Offices.jpg