|County||Contra Costa County|
|Elevation||741 ft (226 m)|
Somersville (also, Sommerville and Summerville) 6 miles (10 km) north-northeast of Mount Diablo, at an elevation of 741 feet (226 m).is an unincorporated ghost town in eastern Contra Costa County, California. It is located
Somersville was founded in the 1850sby gold miners. It was named after Francis Somers who had discovered the Black Diamond Mine. Somersville was home to the Manhattan, Union, Eureka, Pittsburg and Independent mines. The town is no longer populated and is within the boundaries of the East Bay Regional Park District's Black Diamond Mines Regional Park. Somersville Road was named after the town; it is a major north–south arterial trunk road in the closest existing neighbor: Antioch. Somersville's ruins have a fairly extensive number of graves in the Rose Hill Cemetery, many of which contain dead miners who died in accidents in the coal mines. However the Rose Hill Cemetery was heavily vandalized till the East Bay Regional Park District took over in the 1970s. The Somersville mines are now sealed to prevent entry due to frequent incidents of people becoming lost inside them during the mid 20th century.
A post office operated at Somersville from 1863 to 1910.The name is in honor of Francis Somers, coal mine founder.
A reporter for the Antioch Ledger, May 7, 1870 described the town: "...Somersville has a four general merchandise stores, one drug store, one hotel, two large boarding houses, several minor ones, a doctor, barber, shoemaker, no tailor, four saloons, purs et simple, not counting liquors dispensed at groceries. As an offset, we have a flourishing Lodge of Good Templars and Sons of Temperance. Odd Fellows and Red Men each have an organization. A Protestant and a Catholic Church shed their humanizing influence around, both being well attended. The public school is maintained nearly all the year round, by a special tax when the State funds fails; from seventy-five to one hundred scholars is the average daily attendance. There are two departments, and two lady teachers, under whose painstaking auspices the fundamental branches flourish."
In 1979, Somersville gained fame as the site of the largest historical archaeology excavation ever done in the U.S. at the time. Over 200 students from U.C Berkeley scraped and sifted through the eastern part of the townsite, recovering thousands of artifacts. The Public Broadcasting System examined the project in a documentary series on archaeology, Odyssey: Other People's Garbage.
Contra Costa County is located in the state of California in the United States. As of the 2020 census, the population was 1,165,927. 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 refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.
Antioch is the second-largest city in Contra Costa County, California, United States. Located in the East Bay region of the San Francisco Bay Area along the San Joaquin–Sacramento River Delta. The city's population was 115,291 at the 2020 census. Formerly an all-white sundown town, the city has grown substantially more diverse since the 1970s.
Bodie is a ghost town in the Bodie Hills east of the Sierra Nevada mountain range in Mono County, California, United States. It is about 75 miles (121 km) southeast of Lake Tahoe, and 12 mi (19 km) east-southeast of Bridgeport, at an elevation of 8,379 feet (2554 m). Bodie became a boom town in 1876 after the discovery of a profitable line of gold; by 1879 it had a population of 7,000–10,000.
The East Bay Regional Park District (EBRPD) is a special district operating in Alameda County and Contra Costa County, California, within the East Bay area of the San Francisco Bay Area. It maintains and operates a system of regional parks which is the largest urban regional park district in the United States. The administrative office is located in Oakland.
Nortonville is an unincorporated ghost town in Contra Costa County, California. It was located on Kirker Creek 5.5 miles (9 km) north-northeast of Mount Diablo, at an elevation of 801 feet.
The Black Diamond Mines Regional Preserve is a 6,000-acre (2,400 ha) park located north of Mount Diablo in Contra Costa County, California under the administration of the East Bay Regional Park District (EBRPD). The district acquired the property in 1973. The preserve contains relics of 3 mining towns, former coal and sand mines, and offers guided tours of a former sand mine. The 60 miles (97 km) of trails in the Preserve cross rolling foothill terrain covered with grassland, California oak woodland, California mixed evergreen forest, and chaparral.
The Contra Costa Canal is a 47 mi (76 km) aqueduct in the U.S. state of California. Its construction began in 1937, with delayed completion until 1948 due to World War II shortages in labor and materials. A portion of the canal's right of way has been developed as the Contra Costa Canal Regional Trail, a biking and walking trail, and is managed by the East Bay Regional Park District.
Antioch/Oakley Regional Shoreline is a regional park that is part of the East Bay Regional Parks system. It is located on the south shore of the San Joaquin River in Contra Costa County, California, between the cities of Antioch and Oakley. It is owned by the State of California and operated on a no-cost lease by the East Bay Regional Parks District. The park was begun in 1979, when the adjacent John Nejedly Bridge was constructed across the river. The park was originally named Antioch Regional Shoreline, and was given its present name when Oakley incorporated as a city in 1999.
Stewartville was an unincorporated place in eastern Contra Costa County, California that is now a ghost town. It was located 6 miles (10 km) northeast of Mount Diablo, at an elevation of 558 feet. It was a mining town for the nearby coal mines.
West Hartley was an unincorporated community in eastern Contra Costa County, California. It was located 7 miles (11 km) northeast of Mount Diablo, at an elevation of 440 feet. It is now a ghost town. It was a mining town for the nearby coal mines.
Judsonville was a city in eastern Contra Costa County, California. It was located 3 miles (4.8 km) northeast of Stewartville, which is now a ghost town. It was a mining town for the nearby coal mines.
Cornwall, formerly known as Cornwall Station, was an unincorporated community in Contra Costa County, California, before it was absorbed into the City of Pittsburg. It was located 7.25 miles (11.67 km) east-southeast of Baypoint and 1 mile (1.6 km) south of downtown Pittsburg, at an elevation of 39 feet (12 m) ASL.
Point of Timber is a former settlement in Contra Costa County, California. It was located on Indian Slough 2 miles (3.2 km) north of Byron, and about 2.5 miles east of Union Cemetery in Brentwood. It was originally named Point of Timber Landing. The landing was built by Josiah Wills, who organized the deepening of Indian Slough, connecting the landing to the Old River. Point of Timber got its name from the mile wide strip of open Oak woodland that ran from just east of the house of John Marsh along the course of Arroyo del Sur to the edge of the marshes bordering Indian Slough and Old River.
Noah Norton was a government agent, museum founder, and California Gold Rush prospector. He was instrumental in founding the towns of Adrian, Michigan and Nortonville, California.
The Black Diamond Coal Mining Railroad was 5.9 miles (9.5 km) long and ran from Black Diamond Landing, California to Nortonville, California. It was owned and operated by the Black Diamond Coal Mining Company and therefore did not have its own official name. Over the years, it has been known by at least four different names.
Southport is an unincorporated locale in Coos County, Oregon, United States. It was located along Southport Creek, near where the creek flows into Isthmus Slough, 6.5 miles (10 km) south of the city of Coos Bay, at an elevation of 30 feet. The former community is now a ghost town.
Hedges, later renamed Tumco, is a locale, a ghost town, site of a former mining town, in Imperial County, California. It lies at an elevation of 617 feet / 188 meters along the Tumco Wash in the Cargo Muchacho Mountains. Nearby is the Hedges Cemetery at an elevation of 643 feet / 196 meters, at.
The Black Diamond Coal Mining Company was formed in 1861, consolidating the Cumberland and Black Diamond coal mines in the region of Mount Diablo, in Contra Costa County, California. During its years of operation as a mining company, it established three towns: Nortonville, California, Southport, Oregon, and Black Diamond, Washington. The company's mines in California and its settlement of Nortonville later became part of the Black Diamond Mines Regional Park and a California Historical Landmark. Several railroad lines were built in California and Washington to support the company's mines, and the company operated numerous ships to transport its coal. As the mines played out and petroleum became the more common source of energy, the company closed its mines and transitioned into real estate as the Southport Land and Commercial Company.
Mallard Island is a small island in Suisun Bay, at the confluence of the Sacramento and San Joaquin rivers. It is part of Contra Costa County, California. Its coordinates are, and the United States Geological Survey measured its elevation as 3 ft (0.91 m) in 1981. It appears in a 1953 USGS map of the area.
Widdows Island is a small island in the Sacramento–San Joaquin River Delta. It is part of Contra Costa County, California. Its coordinates are, and the United States Geological Survey measured its elevation as 0 ft (0 m) in 1981. It appears on a 1978 USGS map of the area.