Dam - Wikipedia
WebDam. The Edersee Dam in Hesse, Germany. 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.
Dams - National Geographic Society
Web19 okt. 2023 · A 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 …
Dam | Definition, History, Types, Environmental Impacts, Examples ...
Web21 mei 2024 · dam, structure built across a stream, a river, or an estuary to retain water. Dams are built to provide water for human consumption, for irrigating arid and semiarid lands, or for use in industrial processes. They are used to increase the amount of water available for generating hydroelectric power, to reduce peak discharge of floodwater ...
Dams, Engineering, and Technology - National Geographic
Web3 dagen geleden · Learn about Dams, Engineering, and Technology and Freshwater at National Geographic.
Global Dam Tracker: A database of more than 35,000 dams with
Web23 feb. 2023 · The Global Dam Tracker (GDAT) contains 35,000 dams with cross-validated geo-coordinates, satellite-derived catchment areas, and detailed attribute information.
dam summary | Britannica
WebModern dams are generally built of earth fill, rock fill, masonry, or monolithic concrete. Earth-fill (or embankment) dams, such as Egypt’s Aswan High Dam , are usually used across broad rivers to retain water.
How dams have reshaped our planet - BBC
WebScroll down to explore the myriad ways that dams are writing unique stories into the stratigraphic and archaeological record around the world. Welcome to “Anthropo-Scene”, a new BBC Future series.
Dam - The modern dam | Britannica
WebMost modern dams are of two basic types: masonry (concrete) gravity designs and embankment (earthfill or rockfill) designs. Masonry dams are typically used to block streams running through relatively narrow gorges, as in mountainous terrain; although the structures may be very high, the total amount of material required for such sites is limited.
Hydroelectric dam - Energy Education
WebDams are just one component of a complete hydroelectric facility, but are one major, visible component in the system. The purpose of a hydroelectric dam is to provide a place to convert the potential and kinetic energy of water to …
How dams can go with the flow | Science
Web9 sep. 2016 · New dams are widely seen as sources of green energy. An estimated 75% of the world's potential hydropower capacity is unexploited ( 2 ), and some 3700 new dams are currently proposed in developing economies ( 3, 4 ). But dams also cause substantial and often unacknowledged environmental damage.
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