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Morena Dam
Morena Dam is a rockfill dam across Cottonwood Creek, a tributary of the Tijuana River, in southern San Diego County, California in the United States. Originally completed in 1912 and raised several times afterward, the dam is one of the oldest components of the city of San Diego's municipal water system, providing between of water per year. It is one of the few facilities in the San Diego water supply system that relies entirely on local runoff. Dimensions Morena Dam is located in the Cleveland National Forest at the headwaters of Cottonwood Creek, about east of downtown San Diego. The dam is high from the riverbed and long, with a height of from the foundations. Altogether the dam contains of earth and rock fill. At its full height, the reservoir can hold of water, covering . The drainage area above the dam is and includes the tributary Morena Creek, for which the dam and reservoir are named. Water is released via a long tunnel, fed by an intake tower that can draw up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego County
San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fifth-most populous in the United States. Its county seat is San Diego, the second-most populous city in California and the eighth-most populous city in the United States. It is the southwesternmost county in the 48 contiguous United States, and is a border county. It is also home to 18 Native American tribal reservations, the most of any county in the United States. San Diego County comprises the San Diego-Chula Vista-Carlsbad, CA Metropolitan Statistical Area, which is the 17th most populous metropolitan statistical area and the 18th most populous primary statistical area of the United States as of July 1, 2012. San Diego County is also part of the San Diego–Tijuana transborder metropolitan area, the largest metropolitan area s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colorado River
The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid watershed that encompasses parts of seven U.S. states and two Mexican states. The name Colorado derives from the Spanish language for "colored reddish" due to its heavy silt load. Starting in the central Rocky Mountains of Colorado, it flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the Arizona–Nevada border, where it turns south toward the international border. After entering Mexico, the Colorado approaches the mostly dry Colorado River Delta at the tip of the Gulf of California between Baja California and Sonora. Known for its dramatic canyons, whitewater rapids, and eleven U.S. National Parks, the Colorado River and its tributaries are a vital source of water for 40 million people. An extensive system of dams, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams Completed In 1912
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, tap water, human consumption, Industrial water, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as Dike (construction), dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam (Jordan), Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In California
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, tap water, human consumption, Industrial water, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as Dike (construction), dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam (Jordan), Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Hatfield
Charles Mallory Hatfield (July 15, 1875January 12, 1958) was an American " rainmaker". Early life Hatfield was born in Fort Scott, Kansas on July 15, 1875. His family moved to Southern California in the 1880s. As an adult, he became a salesman for the New Home Sewing Machine Company. In 1904, he moved to Glendale, California. Career In his free time Hatfield studied pluviculture and began to develop his own methods for producing rain. By 1902 he had created a secret mixture of 23 chemicals in large galvanized evaporating tanks that, he claimed, attracted rain. Hatfield called himself a "moisture accelerator". In 1904, promoter Fred Binney began a public relations campaign for Hatfield. A number of Los Angeles ranchers saw his ads in newspapers and promised Hatfield $50 to produce rain. In February, Hatfield and his brother Paul built an evaporating tower at La Crescenta where Hatfield released his mixture into the air. Hatfield's attempt was apparently successful, so the ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael O'Shaughnessy
Michael Maurice O'Shaughnessy (28 May 1864 – 12 October 1934) was an Irish civil engineer who became city engineer for the city of San Francisco during the early twentieth century and developed both the San Francisco Municipal Railway (Muni) and the Hetch Hetchy water system. Early life, education, and immigration O'Shaughnessy was born to farmers Patrick and Margaret (nee O'Donnell) at the family cottage named Jointer in Loughill Parish, County Limerick, Ireland on May 28, 1864; he was one of nine children. At two years old, he was sent to live with his maternal grandparents, approximately east of his birthplace, along with his Uncle Maurice, Aunt Alice, sister Kate, and cousin Margaret O'Clery, who had been orphaned. In 1875, he entered the Mount Trenchard National School and completed his studies there on September 25, 1880, whereupon he tried his hand at farming briefly before deciding to train as a civil engineer. He began those studies at Rockwell College in C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bond Issue
In finance, a bond is a type of security under which the issuer (debtor) owes the holder (creditor) a debt, and is obliged – depending on the terms – to repay the principal (i.e. amount borrowed) of the bond at the maturity date as well as interest (called the coupon) over a specified amount of time. The interest is usually payable at fixed intervals: semiannual, annual, and less often at other periods. Thus, a bond is a form of loan or IOU. Bonds provide the borrower with external funds to finance long-term investments or, in the case of government bonds, to finance current expenditure. Bonds and stocks are both securities, but the major difference between the two is that (capital) stockholders have an equity stake in a company (i.e. they are owners), whereas bondholders have a creditor stake in a company (i.e. they are lenders). As creditors, bondholders have priority over stockholders. This means they will be repaid in advance of stockholders, but will rank behind secur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otay River
The Otay River () is a river in southern San Diego County, California. The river begins at San Miguel Mountain, flows through the Upper and Lower Otay Reservoirs, and continues on between the southern part of the Chula Vista and the Otay Mesa West district of San Diego, to its river mouth on San Diego Bay. River The river has a watershed. To its north is the watershed of Sweetwater River, and to its south is the watershed of Tijuana River. Between Interstate 5 and Interstate 805 is Otay Valley Regional Park. , there is a plan to restore part of its pre- Mexican era estuary on lands utilized by the South Bay Salt Works. Otay Reservoirs Savage Dam, completed in 1921, forms the Lower Otay Reservoir, which is used to supply drinking water to parts of southern San Diego County. The reservoir is also the terminus for Pipeline 3 of the Second San Diego Aqueduct, which delivers water from the Colorado River via the Colorado River Aqueduct. Its predecessor, the Lower Otay Dam was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barrett Dam
Barrett Dam is a concrete arch-gravity dam in southern San Diego County, California in the United States, forming Barrett Lake on Cottonwood Creek. The dam is part of the city of San Diego's local water supply system. Overview and operations Barrett Dam is located in a narrow canyon just below the confluence of Cottonwood Creek and Pine Valley Creek, about east of downtown San Diego. The dam is high above the riverbed and long, forming a reservoir with of usable capacity. The dam contains of concrete. The spillway is located on the face of the dam and is a stepped overflow structure controlled by gates. At maximum water levels the spillway capacity is approximately . To prevent flash floods from overtopping the dam, the gates are left open during the rainy season from November 1 to April 1. The dam's primary purpose is to store water for diversion through the Dulzura Conduit, a long concrete aqueduct which transfers water from the Cottonwood Creek basin to Lower Otay Rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the most populated subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento is the state's capital, while Los Angeles is the most populous city in the state and the second most populous city in the country. San Francisco is the second most densely populated major city in the country. Los Angeles County is the country's most populous, while San Bernardino County is the largest county by area in the country. California borders Oregon to the north, Nevada and Arizona to the east, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Otay Reservoir
Lower Otay Reservoir is a reservoir in San Diego County, Southern California. It is flanked by Otay Mountain to the southeast, the Jamul Mountains to the east, Otay Lakes Road and Upper Otay Reservoir to the north, and the city of Chula Vista to the west. The reservoir is formed by impounding the waters of the Otay River, behind Savage Dam, completed in 1918, and is also the terminus for the second San Diego Aqueduct, which transports imported water from the Colorado River. The dam and reservoir are owned by the City of San Diego. History The area where the Reservoir is located was part of Rancho Janal, and was purchased by E. S. Babcock. Lower Otay Reservoir was originally created in 1897 after the construction of the Lower Otay Dam by the Southern California Mountain Water Company. The original dam was a rock fill type of high. In 1900, John D. Spreckels purchased the land around the reservoir, and the reservoir was later acquired by a company owned by Spreckels. At the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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