A report on HydropowerWatermill and Dam

The Three Gorges Dam in China; the hydroelectric dam is the world's largest power station by installed capacity.
Watermill of Braine-le-Château, Belgium (12th century)
Glen Canyon Dam on the Colorado River, Arizona, USA
A water piston from the Nongshu by Wang Zhen (fl. 1290–1333)
Interior of the Lyme Regis watermill, UK (14th century)
Lake Vyrnwy Dam, Wales, finished in 1888
Saint Anthony Falls, United States; hydropower was used here to mill flour.
Model of a Roman water-powered grain-mill described by Vitruvius. The millstone (upper floor) is powered by an undershot waterwheel by the way of a gear mechanism (lower floor)
Karapuzha Dam, an earthen dam in the Indian state of Kerala
Directly water-powered ore mill, late nineteenth century
Scheme of the Roman Hierapolis sawmill, the earliest known machine to incorporate a crank and connecting rod mechanism.
Imatrankoski Dam on the Vuoksi River in Imatra, Finland
Benoît Fourneyron, the French engineer who developed the first hydropower turbine
Roman turbine mill at Chemtou, Tunisia. The tangential water inflow of the millrace made the horizontal wheel in the shaft turn like a true turbine, the earliest known.
Small dam near Groningen, Netherlands
A shishi-odoshi powered by falling water breaks the quietness of a Japanese garden with the sound of a bamboo rocker arm hitting a rock.
Medieval watermill
Afsluitdijk with the Wadden Sea (a part of the North Sea) on the left and the IJsselmeer on the right in the Netherlands
A conventional dammed-hydro facility (hydroelectric dam) is the most common type of hydroelectric power generation.
German ship mills on the Rhine, around 1411
The Roman dam at Cornalvo in Spain has been in use for almost two millennia.
Chief Joseph Dam near Bridgeport, Washington, is a major run-of-the-river station without a sizeable reservoir.
A Northern Song era (960–1127) water-powered mill for dehusking grain with a horizontal wheel
Remains of the Band-e Kaisar dam, built by the Romans in the 3rd century AD
Micro hydro in Northwest Vietnam
An Afghan water mill photographed during the Second Anglo-Afghan War (1878-1880). The rectangular water mill has a thatched roof and traditional design with a small horizontal mill-house built of stone or perhaps mud bricks
An engraving of the Rideau Canal locks at Bytown
The upper reservoir and dam of the Ffestiniog Pumped Storage Scheme in Wales. The lower power station can generate 360 MW of electricity.
A watermill in Tapolca, Veszprem County, Hungary
Masonry arch wall, Parramatta, New South Wales, the first engineered dam built in Australia
Roblin's Mill, a watermill, at Black Creek Pioneer Village in Toronto, Ontario, Canada
The Hoover Dam by Ansel Adams, 1942
Watermills on the Pliva in Jajce, Bosnia and Herzegovina
Gordon Dam, Tasmania, is an arch dam.
The interior of a functional watermill at Weald and Downland Open Air Museum
Daniel-Johnson Dam, Quebec, is a multiple-arch buttress dam.
Mulino Meraviglia in San Vittore Olona, Italy, along Olona river
The Grand Coulee Dam is an example of a solid gravity dam.
Dalgarven Mill, Ayrshire, United Kingdom
The Hoover Dam is an example of an arch-gravity dam.
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The Koshi Barrage of Nepal
A breastshot waterwheel at Dalgarven Mill, United Kingdom
Gathright Dam in Virginia is a rock-fill embankment dam.
Watermill in Kuusamo (Finland)
Redridge Steel Dam, built 1905, Michigan
Watermill in Jahodná (Slovakia)
A timber crib dam in Michigan, 1978
Watermill in Caldas Novas, Brazil
A cofferdam during the construction of locks at the Montgomery Point Lock and Dam
Former watermill in Kohila, Estonia
Hydraulic turbine and electric generator
Undershot water wheel, applied for watermilling since the 1st century BC
Hydroelectric dam in cross section
Overshot water wheel, applied for watermilling since the 1st century BC
Spillway on Llyn Brianne dam, Wales, soon after first fill
Breastshot water wheel, applied for watermilling since the 3rd century AD<ref name="Wikander 2000, 375"/>
The discharge of Takato Dam
Pitchback water wheel, often used to increase the power generated by a breastshot wheel<ref name="Yorke">{{cite book|last=Yorke|first=Stan|title=The Industrial Revolution explained|publisher=Countryside Books|location=Newbury, Berks|year=2005|pages=20–31|isbn=978-1-85306-935-2}}</ref>
Wood and garbage accumulation due to a dam
South Fork Dam failure and resulting flood that destroyed Johnstown in Pennsylvania in 1889
International special sign for works and installations containing dangerous forces

A watermill or water mill is a mill that uses hydropower.

- Watermill

Hydropower is often used in conjunction with dams to generate electricity.

- Dam

Since ancient times, hydropower from watermills has been used as a renewable energy source for irrigation and the operation of mechanical devices, such as gristmills, sawmills, textile mills, trip hammers, dock cranes, domestic lifts, and ore mills.

- Hydropower

They also pioneered the use of dams as a source of water power, used to provide additional power to watermills and water-raising machines.

- Hydropower

Water was conducted from the back of the dam through a large pipe to drive a water wheel and watermill.

- Dam

Muslim and Middle Eastern Christian engineers also used crankshafts and water turbines, gears in watermills and water-raising machines, and dams as a source of water, used to provide additional power to watermills and water-raising machines.

- Watermill
The Three Gorges Dam in China; the hydroelectric dam is the world's largest power station by installed capacity.

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