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Drop structures are small dams used to stabilize steep waterways and other channels. They can handle large amounts of runoff water and are effective where falls are less than 2.5 meters. In channel stabilization, drop structures such as a straight drop spillway are constructed to direct the flow of water through a weir, into a stilling basin where the energy of the water is dissipated before it flows into the channel below. The straight drop spillway may be used with drops only up to ten feet. Chutes and flumes are used much in the same manner for steeper grades. |
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