flashboard

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flashboard

[′flash‚bȯrd]
(civil engineering)
A relatively low, temporary barrier constructed of a series of boards along the top of a dam spillway to increase storage capacity.
References in periodicals archive ?
The owners were ordered to cease activities on the property, and through opening gates and removing flashboards, return the water level to the top of the concrete spillway.
3) Flashboards at the Burdon Pond Dam have raised water levels at Burdon Pond.
He said board members estimate that it will cost $4,700 to $5,500 to replace worn out flashboards and install new riprap.
According to the letter, since the spring of 2008, MRC has repeatedly failed to replace flashboards that increase the height of the water to at least the "Rule Curve.
This past spring, when MRC again failed to replace the flashboards, DEP observed alteration of areas subject to protection under the Wetlands Protection Act because of the decline in the water level, the letter said.
The town also tried to eliminate the dam flashboards required under the federal grant agreement and improperly drew down the pond level 3 feet last summer, despite drought conditions.
Pula looked north from the sidewalk in front of the Quabbin Administration Building, observing not only what a beautiful evening it was, but - more significantly - that the reservoir's mid-July level was only a little more than a foot below capacity, with water still spilling into the gorge above the Swift River through the section of spillway controlled by flashboards.
We've solved the problem with the blocked culverts, filled with mud, sticks, leaves and other debris, and we cleared away two feet of mud that beavers had built up behind the flashboards at the spillway," Mr.
Tighe & Bond suggested that the Office of Dam Safety be notified and that the flashboards be removed from the top of the dam, a dive crew be contracted to repair the sluice gate and repairs be made at an estimated cost of $411,000.