鲍威尔湖不仅因干旱水位骤降，总容量也在萎缩
一份新报告显示，自 1963 年格伦峡谷大坝建成以来，美国第二大人造水库鲍威尔湖的潜在蓄水能力已损失近 7%。
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来源: CNN
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Lake Powell, the second-largest human-made reservoir in the US, has lost nearly 7% of its potential storage capacity since 1963, when Glen Canyon Dam was built, a new report shows.
