美国有着漫长的筑坝历史,大坝为其经济发展做出了巨大的贡献,但同时也对生态环境造成了一定程度的影响。本文介绍了美国已建大坝、反坝、拆坝、修坝、建新坝的一些情况,其建坝、拆坝等方面的经验对中国乃至世界其它国家的水电开发管理具有非常重要的借鉴作用。 The United States has a long history of damming. The dam has made tremendous contributions to its economic development, but it has also had a certain impact on the ecological environment. This paper introduces some cases of dams, anti-dams, demolition dams, dam repair and construction of new dams in the United States. Its experience in dam construction and dam demolition has a very important reference for hydropower development and management in China and other countries in the world .