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But most of these dams were built between the 1930s and 1960s, and some are now beyond their useful lives. Today, we understand dams compromise entire ecosystems. We have better ways to reap the ...
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 ...
Remains of the Band-e Kaisar dam, built by the Romans in the 3rd century AD. In Iran, bridge dams such as the Band-e Kaisar were used to provide hydropower through water wheels, which often powered water-raising mechanisms. One of the first was the Roman-built dam bridge in Dezful, [24] which could raise water 50 cubits (c. 23 m
The U.S. Army Corps of Engineers just opened up two California dams. A spokesperson says the flows are 'controlled' and being coordinated with local officials.
Water demand management came into vogue in the 1990s and 2000s at the same moment dams and similar supply augmentation schemes went out of fashion because they were increasingly seen as overly expensive, damaging to the environment (see Environmental impact of reservoirs), and socially unjust. Now, in the 2020s, it is accurate to say that ...
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 ]
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In some areas locals are concerned that dams result in a decrease in nature tourism. [41] Like national energy policy as a whole, [52] decision-making for dam construction is centralized and not always transparent, which can lead to complaints by local people. [41] Tens of thousands of people have been displaced by reservoirs. [53]