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  1. en.wikipedia.org

    Early dam building took place in Mesopotamia and the Middle East.Dams were used to control water levels, for Mesopotamia's weather affected the Tigris and Euphrates Rivers.. The earliest known dam is the Jawa Dam in Jordan, 100 kilometres (62 mi) northeast of the capital Amman.This gravity dam featured an originally 9-metre-high (30 ft) and 1 m-wide (3.3 ft) stone wall, supported by a 50 m ...
  2. en.wikipedia.org

    The nearly 8100 major dams in the United States in 2006. The National Inventory of Dams defines a major dam as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3). [1]The following is a partial list of dams and reservoirs in the United States.
  3. britannica.com

    7 days agoHistory Ancient dams The Middle East. The oldest known dam in the world is a masonry and earthen embankment at Jawa in the Black Desert of modern Jordan.The Jawa Dam was built in the 4th millennium bce to hold back the waters of a small stream and allow increased irrigation production on arable land downstream. Evidence exists of another masonry-faced earthen dam built about 2700 bce at Sadd ...
  4. education.nationalgeographic.org

    Jun 21, 2024A dam is a structure built across a river or stream to hold back water. People have used different materials to build . dams over the centuries.. Ancient dam builders used natural materials such as rocks or clay. Modern-day dam builders often use concrete.Manmade dams create artificial lakes called reservoirs.. Reservoirs can be used to store water for farming, industry, and household use.
  5. Dams and levees provide the citizens of Ohio with essential benefits such as water supply, flood control, recreation and irrigation. While dams have multiple benefits, they also represent a risk to public safety and economic infrastructure if they are not properly maintained. Each year Dam Safety engineers and staff conduct more than 300 ...
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  7. dailycivil.com

    Jan 12, 2023Dams may be built as small as an embankment dam, built to provide adequate quantity of water in farms, or as large as a massive concrete structure, for various purposes. The reservoir created by dams provides water for various purposes such as human consumption, agriculture activities, industrial use, hydropower generation, etc. ...
  8. en.wikipedia.org

    Hoover Dam, in Blendon Township, near Westerville, Ohio, dams the Big Walnut Creek to form the Hoover Memorial Reservoir. This reservoir is a major water source for the city of Columbus, Ohio.It holds 20.8 billion US gallons (79,000,000 m 3) of water and has a surface area of 3,272 acres (13.24 km 2), or about five square miles.Construction began during 1953 due to the increased water demand ...
  9. build-construct.com

    Jan 5, 2024Dams are further categorized based on their gross storage capacity into small dams, medium dams, and large dams. 19. Small Dam. A small dam is characterized by a gross storage capacity ranging from 0.5 to 10 million cubic meters and a hydraulic head typically around 7.5 to 12 meters. These dams find application in various settings, serving ...
  10. earthreminder.com

    Gravity Dams. Gravity dams are triangular-shaped made up of masonry. Generally, four different kinds of gravity dams are found, such as straight, curved, hollow, and solid gravity dams. Moreover, these are of massive size for retaining a large quantity of water. The Grand Coulee Dam (USA) is an example of a gravity dam. Buttress Dams
  11. worldatlas.com

    Learn about the various types of dams based on purpose, design, and structure. Dams are physical barriers that prevent or limit the flow of water and provide water for human consumption, irrigation, industrial use, navigability, aquaculture, and hydropower generation.

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    Dam

    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, human consumption, 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 are used to manage or prevent water flow into specific land regions. 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. Ancient dams were built in Mesopotamia and the Middle East for water control. Wikipedia

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