A dam is a structure built across a stream or river to hold water back. Dams can be used to store water, control flooding, and generate electricity.
5 - 8
Conservation, Earth Science, Geology, Meteorology
An aerial view of the Hoover Dam. This dam has been harvesting hydroelectric power for over 80 years now.
Photograph by Andrew Zarivny
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May 20, 2022
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