Sentences with phrase «emergency spillway»
An "emergency spillway" is a structure or channel designed to release excess water from a reservoir during an emergency situation, such as when the normal spillway is unable to handle the volume of water. It helps prevent the water from overflowing the dam and causing a dangerous situation. Full definition
That triggered emergency draw down and round the clock emergency spillway repairs, through destroying the lower main spillway.
judithcurry.com
Water levels fell to a point at which little or no water flowed out of the emergency spillway, which Orrock said was the main factor in its erosion.
Lake levels have fallen about one - half a foot in the last two hours and stand at 901.35 feet, about four - tenths of a foot above the level where water flows through the emergency spillway, state figures show.
Almost 200,000 people were ordered to evacuate after a hole in the emergency spillway in Northern California's Oroville Dam threatened to flood the surrounding area.
02.22.2017 — The erosion of the Oroville Dam's emergency spillway, which triggered the evacuation of 188,000 people... Read More.
That was triggered by a flash warning that catastrophic failure of the emergency spillway could occur within 45 minutes due to rapid erosion by the «managed» overtopping flow — right after calming official assurances that there was no danger of dam failure.
M1 — 1.3 It is imperative that the Emergency Spillway not receive additional flows and that a long - term mitigation and re-design plan begin now.
Would a gunite - ing or shot - creting the steep downslope below the emergency spillway work at all when the weight of the water might just crush the concrete lining of the slope?
The marvelous California Spillway Risk Analysis was completely undermined by inadequate construction of both the main and emergency spillways, lack of aeration retrofit (though implemented on other dams), lack of maintenance, and fragile power line design.
«initiate immediate design of emergency repair to minimize further degradation of both the emergency spillway and the service spillway.
«The guidelines specify that during a rare flood event, it is acceptable for the emergency spillway to sustain significant damage.»
The USBR had computer dam failure models in the 70's; these should be invaluable in evaluating the failure of either emergency spillway or the main; as they considered the strength of the underlying material.