Dam - Wikipedia
WEBA 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 | Definition, History, Types, Environmental Impacts, Examples ...
WEB7. mars 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 - 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.
Dam - The modern dam | Britannica
WEBDam - The modern dam: Most 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 ...
Dam Definition & Meaning - Merriam-Webster
WEBThe meaning of DAM is a barrier preventing the flow of water or of loose solid materials (such as soil or snow); especially, civil engineering : a barrier built across a watercourse for impounding water. How to use dam in a sentence.
Dams, Engineering, and Technology - National Geographic
WEBDams produce hydroelectric power and the reservoirs behind dams store water supplies for the long haul. Infrastructure, such as levees and canals, channel water to our homes and fields, and keep ...
Purposes of Dams - Importance, Functions and Applications
WEB20. sep. 2018 · Dam is a barrier built across a river to hold back river water for safe retention and storage of water or control the water flow. Dams allow to divert the river flow into a pipeline, a canal or channel. Dams results in substantially raising water levels in the river over a large area, thus create a storage space.
dam summary | Britannica
WEBdam, Barrier built across a stream, river, or estuary to conserve water for such uses as human consumption, irrigation, flood control, and hydroelectric power generation. The earliest recorded dam is believed to be a masonry structure 15 m (49 ft) high built across the Nile River in Egypt c. 2900 bce .
Climate change: Dams played key role in limiting sea level rise …
WEB19. aug. 2020 · Getty Images. The construction of large-scale dams has played a surprising role in limiting rising seas, say scientists. Over the past century, melting glaciers and the thermal expansion of sea ...
Dams - Water Education Foundation
WEB15. sep. 2014 · There are 101 dams with identified dam safety deficiencies that are rated as fair, poor, or unsatisfactory. DSOD may require a restriction of the reservoir storage to a specific level if unsafe conditions exist or require the dam owner to implement other risk reduction measures until remedial actions can be implemented.
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