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Exemption
April 11, 2022![Subheader | Low Impact Hydropower Subheader Image](https://lowimpacthydro.org/wp-content/uploads/2021/02/3-scaled.jpg)
Roller Compacted Concrete Dam
April 11, 2022A dam constructed of concrete and/or masonry on the outside but having a hollow interior and relying on its weight for stability.
A dam constructed of concrete and/or masonry on the outside but having a hollow interior and relying on its weight for stability.