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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 ...
Jul 3, 2024 · They are used to increase the amount of water available for generating hydroelectric power, to reduce peak discharge of floodwater created by large storms or heavy snowmelt, or to increase the depth of water in a river in order to improve navigation and allow barges and ships to travel more easily.
Jun 21, 2024 · 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.
Nov 14, 2021 · Dams are water reservoirs or just a wall-like structure built across a river to retain the water and increase the flow when needed, used for electricity generation, and various other functions. Most of the people have several questions about the basics of a dam and various purposes of it.
Jul 3, 2024 · 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 for such sites is limited.
The largest dams in the world are truly immense, often exceeding 240 metres (about 787 feet) in height and 60 million cubic metres (about 2.1 billion cubic feet) in volume. The volumes of the largest water reservoirs held back by dams range from some 60 billion cubic metres (2.1 trillion cubic feet) to nearly 3 trillion cubic metres (106 ...
Feb 23, 2023 · The Global Dam Tracker (GDAT) contains 35,000 dams with cross-validated geo-coordinates, satellite-derived catchment areas, and detailed attribute information.
Dams 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...
Aug 10, 2023 · Tehri Dam in Uttarakhand is the highest dam in India built on the Bhagirathi River. Hirakud Dam in Odisha built on river Mahanadi is the longest dam in India. Kallanai Dam in Tamil Nadu is the oldest dam in India .
6 days ago · Updated 3:24 PM PDT, July 5, 2024. MANAWA, Wis. (AP) — A dam in an eastern Wisconsin community has been breached, prompting people living downriver to be evacuated, the National Weather Service said Friday. The dam in Manawa along the Little Wolf River was breached about 1:45 p.m. by floodwaters, meteorologist Scott Cultice said.
