Spillway 6
Spillway 6 :
A weir, conduit, tunnel, channel or other structure designed to permit discharges from the reservoir when water levels rise above the crest controlling flow down or into the spillway structure. The spillway is principally to discharge flood flows safely past a dam but may be used to release water for other purposes. The spillway may be ungated or uncontrolled (a ‘free-overflow spillway’) in which case discharge occurs when the reservoir rises above the crest. If a gate or gates are used to control the uppermost level of the reservoir the spillway is referred to as a ‘gated’ or ‘controlled’ spillway
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