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Helm Canal
The Helm Canal is an aqueduct named after William Helm in Clovis, California, involved in a series of water transfers to eliminate selenium bearing brackish waters to the San Joaquin River to bypass agricultural deliveries. The Helm canal was previously used to irrigate numerous properties that were in agricultural usage and are presently converted to urban uses such as the site of the Clovis Towne Center. Topography in the locale of the Helm Canal is generally very level having been formed by alluvial fans. The elevation in the vicinity of the Helm Canal is approximately to above mean sea level datum.U.S. Geological Survey, ''Clovis, California, 7.5 Minute Quadrangle'', 1964, photorevised 1972) and groundwater generally flows to the southwest See also *Surface runoff Surface runoff (also known as overland flow) is the flow of water occurring on the ground surface when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aqueduct (watercourse)
An aqueduct is a watercourse constructed to carry water from a source to a distribution point far away. In modern engineering, the term ''aqueduct'' is used for any system of pipes, ditches, canals, tunnels, and other structures used for this purpose. The term ''aqueduct'' also often refers specifically to a bridge carrying an artificial watercourse. Aqueducts were used in ancient Greece, ancient Egypt, and ancient Rome. The simplest aqueducts are small ditches cut into the earth. Much larger channels may be used in modern aqueducts. Aqueducts sometimes run for some or all of their path through tunnels constructed underground. Modern aqueducts may also use pipelines. Historically, agricultural societies have constructed aqueducts to irrigate crops and supply large cities with drinking water. Etymology The word ''aqueduct'' is derived from the Latin words (''water'') and (''led'' or ''guided''). Ancient aqueducts Although particularly associated with the Romans, aqueducts we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Helm
William Helm (March 9, 1837 – April 10, 1919) was the largest individual sheep farmer and noteworthy among the early pioneer settlers of Fresno County, California. He was instrumental in the growth and prosperity of the San Joaquin Valley. Helm was vice-president of the Fresno Bank of Central California, and the president of the Fresno Canal and Irrigation Company. Early life Helm was born in the province of Ontario, Canada on March 9, 1837, about forty miles above Montreal, on the St. Lawrence River. He is the son of George and Mary (Oliver Helm), both of whom were born in Scotland. Brought up on the home farm, Helm acquired an education in the district schools, and under his father's instruction. Helm left home in 1856 to Wisconsin for three years engaged in lumbering and operating a sawmill on the Chippewa River. In 1859, Helm sailed from New York City to San Francisco, California by way of Panama. He traveled to Sacramento and searched for gold in Placer County but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis, California
Clovis is a city in Fresno County, California, United States. The 2020 population was 120,124. Clovis is located northeast of downtown Fresno, at an elevation of 361 feet (110 m). History The city of Clovis began as a freight stop along the San Joaquin Valley Railroad. Organized on January 15, 1890, by Fresno businessmen Thomas E. Hughes, Fulton Berry, Gilbert R. Osmun, H.D. Colson, John D. Gray, and William M. Williams, in partnership with Michigan railroad speculator Marcus Pollasky, the SJVRR began construction in Fresno on July 4, 1891, and reached the farmlands of Clovis M. Cole and George Owen by October of that year. The railroad purchased right-of-way from both farmers, half from each – the east side from Cole and the west side from Owen – and ran tracks up the borderline between the two properties. The railroad agreed to establish a station on the west side of the tracks and to call it "Clovis." The Clovis station, which was named after Clovis Cole, was positioned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenium
Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It seldom occurs in its elemental state or as pure ore compounds in the Earth's crust. Selenium – from Greek ( 'Moon') – was discovered in 1817 by , who noted the similarity of the new element to the previously discovered tellurium (named for the Earth). Selenium is found in metal sulfide ores, where it partially replaces the sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackish
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root '' brak''. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms). Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a specific grav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Joaquin River
The San Joaquin River (; es, Río San Joaquín) is the longest river of Central California. The long river starts in the high Sierra Nevada, and flows through the rich agricultural region of the northern San Joaquin Valley before reaching Suisun Bay, San Francisco Bay, and the Pacific Ocean. An important source of irrigation water as well as a wildlife corridor, the San Joaquin is among the most heavily dammed and diverted of California's rivers. People have inhabited the San Joaquin Valley for more than 8,000 years, and it was long one of the major population centers of pre-Columbian California. Starting in the late 18th century, successive waves of explorers then settlers, mainly Spanish and American, emigrated to the San Joaquin basin. When Spain colonized the area, they sent soldiers from Mexico, who were usually of mixed native Mexican and Spanish birth, led by Spanish officers. Franciscan missionaries from Spain came with the expeditions to evangelize the natives by teac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural
Agriculture or farming is the practice of cultivating Plant, plants and livestock. Agriculture was the key development in the rise of Sedentism, sedentary human civilization, whereby farming of Domestication, domesticated species created food Economic surplus, surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into Food, foods, Fiber, fibers, fuels, and raw materials (such as Natural rubber, rubber). Food clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural
Agriculture or farming is the practice of cultivating Plant, plants and livestock. Agriculture was the key development in the rise of Sedentism, sedentary human civilization, whereby farming of Domestication, domesticated species created food Economic surplus, surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into Food, foods, Fiber, fibers, fuels, and raw materials (such as Natural rubber, rubber). Food clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clovis Towne Center
Clovis may refer to: People * Clovis (given name), the early medieval (Frankish) form of the name Louis ** Clovis I (c. 466 – 511), the first king of the Franks to unite all the Frankish tribes under one ruler ** Clovis II (c. 634 – c. 657), king of Neustria and Burgundy and first of the ** Clovis III (reigned 675–676), king of Austrasia, considered a usurper by some ** Clovis IV (c. 677–694), boy king of the Franks from 691 until 694 ** Clovis (died 580), son of Chilperic I and Audovera, assassinated by his father and stepmother ** Clóvis (footballer, born 1937), Clóvis Pinheiro dos Santos, Brazilian footballer ** Clóvis (footballer, born 1970), Clóvis Bento da Cruz, Brazilian football striker Places * Clovis, California ** Clovis Unified School District, serving Clovis and Fresno * Clovis, New Mexico ** Clovis Municipal School District ** Clovis Municipal Airport Archaeology * Clovis culture, Paleo-Indian culture of North America ** Clovis point, the oldes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial
Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluvium is also sometimes called alluvial deposit. Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium. Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations. Definitions The present consensus is that "alluvium" refers to loose sediments of all types deposited by running water in floodplains or in alluvial fans or related landforms. However, the meaning of the term has varied considerably since it was first defined in the French dictionary of Antoine Furetière, posthumously published in 1690. Drawing upon concepts from Roman law, Furetière defined ''alluvion'' (the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
