美西八日之旅（十三）胡佛水坝 Hoover Dam
7月2日下午在从大峡谷返回拉斯维加斯的沿途上，我们短暂停留参观了世界闻名的胡佛水坝（Hoover Dam）。这座大坝位于亚利桑那州与内华达州交界处，座跨科罗拉多河，是美国西南地区最大的水利枢纽工程。坝高220米，底宽200米，顶宽14米，堤长377米。这个标准放到全球来说可能不算是当前顶尖水准，不过考虑到此坝修建于上个世纪30年代，当时堪称世界第一，并且为世界上其他大坝的修建起到了重要的参考价值。
胡佛水坝是1931年在任的第31任总统胡佛（Herbert Clark Hoover）为化解美国大萧条以来的困境及加速西南部地区的繁荣而兴建的，耗费了大量资金，动员了大批人力，于1936年竣工并交付使用。水坝建成后对当地的工农业发展起着巨大的作用，若是没有胡佛水坝，就很难有今天如此繁华的拉斯维加斯。由胡佛大坝而形成的水库，称为米德湖，是西半球最大的人工湖，已成为美国驰名的休闲旅游风景区。近年来由于曾在这里取景的电影《变形金刚》热映，胡佛水坝也变得更加闻名于世。
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