In the 21st century, hydroelectric dams are no longer highly efficient and become expensive to maintain. Such intervention of rivers is usually accompanied by ecological problems such as blocked fish migration, siltation in the upper reaches, and desertification in the lower reaches. All of these motivate us to imagine how the removal of these infrastructures can reduce the huge downstream impact of dams, especially in an era when hydropower is no longer indispensable.
In the global trend of dam removal, we focus on the dams of the Colorado River. Over many years, the movement of
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