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The word dam can be traced back to Middle English, [1] and before that, from Middle Dutch, as seen in the names of many old cities, [2] such as Amsterdam and Rotterdam. Ancient dams were built in Mesopotamia and the Middle East for water control. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. Egyptians also built dams ...
Willow Creek Dam in Oregon, a roller-compacted concrete gravity dam. A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation. Gravity dams are designed so that each section of the dam is stable and independent of any ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 March 2025. Dam in Yiling District, Hubei, China Dam in Yiling District, Hubei Three Gorges Dam 三峡大坝 The dam in September 2009 Location in Hubei Province Show map of Hubei Three Gorges Dam (China) Show map of China Country China Location Sandouping, Yiling District, Hubei Coordinates 30°49 ...
The concern is they have outlived their usefulness and climate change could bring storms they were never built to withstand. Recent floods heighten concerns that New England dams may not be built ...
The Aswan Dam, or Aswan High Dam, is one of the world's largest embankment dams, which was built across the Nile in Aswan, Egypt, between 1960 and 1970. When it was completed, it was the tallest earthen dam in the world, surpassing the Chatuge Dam in the United States. [ 2 ]
Two primary dams, Sites Dam and Golden Gate Dam, would be constructed to hold water in the reservoir where hills drop too low, but they would not block major waterways or rivers. Sites Reservoir would also include nine small dams and dikes to hold the water at the right level.
The water intakes of Hoover Dam on Lake Mead, and the "bathtub ring" behind them, show how far below its historical level the vast reservoir has fallen. ... because the compact was built on a lie ...
A dry dam is a dam constructed for the purpose of flood control. Dry dams typically contain no gates or turbines, and are intended to allow the channel to flow freely during normal conditions. During periods of intense rainfall that would otherwise cause floods, the dam holds back the excess water, releasing it downstream at a controlled rate. [1]