flashboard
- n boarding place along the top of a dam to increase its height
- A two-foot "flashboard" was being added to the 31-ft.
flashboard :
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- Merrimack River level lowered for repairs to dam, changes in dam technology debated in Lowell
LOWELL, Mass. – The Merrimack River is going to be lower this week, and it’s due to heavy rain. That isn’t a paradox. The heavy rains of July damaged the flashboards that sit atop the Pawtucket Dam in Lowell, Mass., and act as an escape value to reduce flooding.
July 20, 2013 - The Nashua Telegraph