Know More about Miyagase Dam
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Miyagase Professionals
Emergency spillway equipment
In cases where the water level inside Lake Miyagase rises suddenly due to flooding more severe than expected, owing to typhoon, heavy rains and so on, this equipment is used to discharge water at the rate of 100m³ per second, maximum discharge rate in the design flood flow of Miyagase Dam.
Unlike the regular use spillway facilities, this is a free overflow type system in which water is collected from the inlet and discharged from the spillway.
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View from the upstream side
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Conditions of test discharge
Type Inlet Spillway Crest 8.5m × 1gate 12m × 1gate 9m × 1gate 21m × 1gate 11.5m × 1gate 13m × 6gates 13.5m × 6gates -