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Lake Powell acts as a sort of savings account for upper-basin states in the Colorado River to store water to send to the lower-basin states. The lighter-colored rock, or "bathtub ring" shows how levels at Lake Powell continue to drop dramatically. Photo credit, Adam Kliczek, Creative Commons.
Lake Powell acts as a sort of savings account for upper-basin states in the Colorado River to store water to send to the lower-basin states. The lighter-colored rock, or "bathtub ring" shows how levels at Lake Powell continue to drop dramatically. Photo credit, Adam Kliczek, Creative Commons.