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side channel spillway
траншейный водосброс
A spillway whose crest is roughly parallel to the channel immediately downstream of the spillway.
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Side channel spillways are located just upstream and to the side of the dam. The water after flowing over a crest enters a side channel which is nearly parallel to the crest. This is then carried by a chute to the downstream side. Sometimes a tunnel may be used instead of a chute.
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