noun
a body of water that is formed by a dam downstream of a hydroelectric power plant
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The water level in the afterbay reservoir is carefully monitored to ensure proper flow downstream.
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Let's go fishing at the afterbay this weekend, it's always a good spot to catch some fish.
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I heard there's a big party happening at the afterbay tonight, we should definitely check it out.
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The afterbay of emotions that followed her breakup was overwhelming and difficult to navigate.