drum gate

drum gate

[′drəm ‚gāt]
(civil engineering)
A movable crest gate in the form of an arc hinged at the apex and operated by reservoir pressure to open and close a spillway.
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References in periodicals archive ?
Successful completion of the project relied on Lochner's ability to show NYSDOT and the community how three proposals would impact the surrounding area and seamlessly connect with a complex interchange at US Route 11, west of the Fort Drum Gate.