The Howden Reservoir is a Y-shaped reservoir, the uppermost of the three in the Upper Derwent Valley, England. The western half of the reservoir lies in Derbyshire and the eastern half is in Sheffield, South Yorkshire; the county border runs through the middle of the reservoir, following the original path of the River Derwent. The longest arm is around 1+1⁄4 mi (2.0 km) in length. The reservoir is bounded at the southern end by Howden Dam; below this, the Derwent flows immediately into Derwent Reservoir and subsequently the Ladybower Reservoir. Other tributaries include the River Westend, Howden Clough and Linch Clough.
Grand Coulee Dam is a concrete gravity dam on the Columbia River in the U.S. state of Washington, built to produce hydroelectric power and provide irrigation water. Constructed between 1933 and 1942, Grand Coulee originally had two powerhouses. The third powerhouse ("Nat"), completed in 1974 to increase energy production, makes Grand Coulee the largest power station in the United States by nameplate capacity at 6,809 MW.
Prestressed concrete is a form of concrete used in construction. It is substantially "prestressed" (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. It was patented by Eugène Freyssinet in 1928.
An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, causing the arch to straighten slightly and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas.
Kiewit Corporation is an American privately held construction company based in Omaha, Nebraska founded in 1884. In 2021, it was ranked 243rd on the Fortune 500. Privately held, it is one of the largest construction and engineering organizations in North America. It is an employee-owned company.
The architecture of Russia refers to the architecture of modern Russia as well as the architecture of both the original Kievan Rus', the Russian principalities, and Imperial Russia. Due to the geographical size of modern and Imperial Russia, it typically refers to architecture built in European Russia, as well as European influenced architecture in the conquered territories of the Empire.
The Croton River is a river in southern New York with three principal tributaries: the West Branch, Middle Branch, and East Branch. Their waters, all part of the New York City water supply system, join downstream from the Croton Falls Reservoir. Together, their waters and the reservoirs linked to them represent the northern half of the New York City water system's Croton Watershed.
Canyon Ferry Dam is a concrete gravity dam in a narrow valley of the Missouri River, United States, where the Big Belt Mountains and the Spokane Hills merge, approximately 68 miles (109 km) downstream from the confluence of the Gallatin, Madison, and Jefferson rivers, and about 20 miles (32 km) east of the city of Helena, Montana. The dam is for flood control, irrigation, recreation and hydroelectric power. The building of the dam created a reservoir known as Canyon Ferry Lake.
The Assiut Barrage is a dam on the Nile River in the city of Assiut in Upper Egypt. It was completed in 1903.
Highbridge Reservoir was a reservoir in the New York City water supply system, which received water from a portion of the Croton Aqueduct system. It was located on Amsterdam Avenue between 172nd Street and 174th Street, in Upper Manhattan adjacent to the High Bridge Water Tower and the High Bridge across the Harlem River Valley. The reservoir covered about 7 acres (28,000 m2), was 16 feet (4.9 m) deep, and had a total capacity of 10,794,000 US gallons (40,860,000 L).
The Subiaco Dams were a group of three Roman gravity dams at Subiaco, Lazio, Italy, devised as pleasure lakes for Emperor Nero. The biggest one was the highest dam in the Roman Empire, and even in the world until its accidental destruction in 1305.
The Getå railroad disaster was a train disaster caused by a landslide in Getå, a town that is now part of the municipality of Norrköping, on 1 October 1918. To date, it is the worst rail accident in Swedish history.
Wemmershoek Dam is a rock-fill type dam located on the Wemmershoek River near Franschhoek and Paarl in South Africa. It was constructed between 1953 and 1957 on behalf of the City of Cape Town. With a reservoir capacity of 58,644 megalitres, it provides approximately 6.5% of the storage capacity of the Western Cape Water Supply System which supplies Cape Town and surrounding areas.
Harriet Russell Strong was an American social activist, inventor, businesswoman, conservationist, and leading figure of the early woman's movement. She has been inducted into the National Women's Hall of Fame and the National Inventors Hall of Fame. Her pioneering innovations in water storage and flood control enabled the construction of the Hoover Dam and the All-American Canal.
Hauser Dam is a hydroelectric straight gravity dam on the Missouri River about 14 miles (23 km) northeast of Helena, Montana, in the United States. The original dam, built between 1905 and 1907, failed in 1908 and caused severe flooding and damage downstream. A second dam was built on the site in 1908 and opened in 1911 and comprises the present structure. The current Hauser Dam is 700 feet (210 m) long and 80 feet (24 m) high. The reservoir formed by the dam, Hauser Lake, is 25 miles (40 km) long, has a surface area of 3,800 acres (1,500 ha), and has a storage capacity of 98,000 acre-feet (121,000,000 m3) of water when full.
The Aldeadávila Dam is a Spanish concrete arch-gravity dam, straddling the border between Spain and Portugal on the Duero River. The nearest town is Aldeadávila de la Ribera in the Province of Salamanca, about 11.3 kilometres (7.0 mi) to the east. The nearest Portuguese town is Fornos in Bragança District, about 8 kilometres (5.0 mi) to the southwest. The Portuguese side of the river around the dam site lies within the Arribes del Duero Natural Park.
The Gileppe Dam is an arch-gravity dam on the Gileppe river in Jalhay, Liège province, Wallonia, Belgium. It was built in the 1870s to supply water for the wool industry in nearby Verviers. The monumental structure with its unusually thick profile played an important role in establishing an international standard for masonry gravity dams as a technology for major water supply systems. It was considered one of the strongest dams in Europe at the time, and it was the first dam built in modern Belgium. In the first decade of the 21st century, it was noted as supplying most of the drinking water for Verviers, as well as industrial water, and as producing hydroelectricity.
Musgum mud huts or Musgum dwelling units are traditional domestic structures built of mud by the ethnic Musgum people in the Maga sub-division, Mayo-Danay division, Far North Province in Cameroon. Referred to in Munjuk as Tolek, the dwellings are built in a variety of shapes, such as tall domed or conical dwellings or huts, some with a reverse-V shape, and others with geometric designs.
The form coach factory of Wegmann & Co. was founded in 1882 in Kassel by Kommerzienrat, Peter Wegmann, and Richard Harkort as the Casseler Waggonfabriken von Wegmann, Harkort & Co. In 1886 it changed its name to Wegmann & Co.
Sir Ernest William Moir was a British civil engineer and the first Moir baronet. He is credited with inventing the first medical airlock while working on the Hudson River Tunnel in New York in 1889.
