side-channel spillway

side-channel spillway

[′sīd ¦chan·əl ′spil ‚wā]
(civil engineering)
A dam spillway in which the initial and final flow are approximately perpendicular to each other. Also known as lateral flow spillway.
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Foundation dewatering will also be required to provide a suitable sub-grade for placement of concrete and earthen fill materials; Replacement of the existing side-channel spillway with a new reinforced concrete (6,000 CY) labyrinth spillway and stilling basin.