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The Wadi Derna is a river valley in Libya which leads down from the Jebel Akhdar mountains to the port city of Derna. Like many other wadis in North Africa, it is an intermittent riverbed that for much of its length contains water only when heavy rain occurs. [1] It is 75 kilometres (47 mi) long [2] and drains a drainage basin of 575 km 2.
The Derna dam is 75 meters (246 feet) high with a storage capacity of 18 million cubic meters (4.76 billion gallons). The second dam, Mansour, is 45 meters (148 feet) high with a capacity of 1.5 ...
The Derna dam collapses were the catastrophic failures of two dams in Derna, Libya, on the night of 10–11 September 2023, in the aftermath of Storm Daniel.The collapse of the Derna Dam and the Abu Mansour Dam released an estimated 30 million cubic meters (39 million cubic yards) of water, [6] [7] causing flooding downstream as the Wadi Derna overflowed its banks.
Map of the Wadi Derna watershed, covering 540 km² in eastern Libya Derna is located at the eastern end of the Jebel Akhdar , one of the very few forested areas in Libya; due to its arid climate, forest makes up a mere 0.1% of Libya's land area.
Images taken by satellite show the physical devastation from a flood that killed at least 11,300 people in the eastern Libyan city of Derna. Two dams above Derna burst early Monday under the ...
Experts had long said that floods posed a significant danger to two dams meant to protect nearly 90,000 people in the northeast of Libya. The warnings came true in the early hours of Sept. 11 ...
The Mansour (or Abu Mansour [83]) dam had a water storage capacity of 1.5 million cubic meters, while the Derna (or Belad [83]) dam upstream had a capacity of 22.5 million cubic meters [83] (1.5 million cubic meters by another source [80]). Floods in Libya, most of the additional rainfall from the storm fell outside Wadi Derna's basin
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