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Grane Dam
The Grane Dam ((ドイツ語:Granetalsperre)) is a dam above the village of Astfeld/Herzog-Juliushütte in the borough of Langelsheim in the Lower Saxon part of the Harz mountains. == Dam system ==
It is the newest dam in the Harz, built in 1969 in the Grane valley. Because the river Grane itself does not deliver enough water for the 3 km long reservoir, a 7.4 km long diversion channel was built from the Oker river below the Oker Dam. This also collects water from the Gose on the way. A further 4.8 km long diversion runs from the Radau to the Großer Romke and thus into the Oker-Grane Tunnel as well. Likewise there is a 4.6 km long underground tunnel to the Innerste Dam. The operator of the Grane Dam, as well as its associated diversion systems and waterworks is the ''Harzwasserwerke''. The barrage is an earth dam with asphaltic concrete lining.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Grane Dam」の詳細全文を読む
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