flashboard

8.7

A removable board placed on top of a dam that raises the water level temporarily

noun
/ˈflæʃbɔrd/

Specialized

: tablero de aumento

The construction crew installed a flashboard on the dam to temporarily increase the water level during the summer drought.

Examples

Commercially available structures offer either stacked flashboard risers or floats to adjust this water level.

Academic text (2005)
PHOTO (COLOR): Norm Fausey moves a flashboard riser in a drainage water management structure to adjust the depth of the drainage outlet.

Academic text (2005)
As it slapped the walls in our nearly empty strip of housing, I thought, for an instant, it was really something like a flashboard of two small bombs going off in a quiet office.

Fiction book (1997)
To prevent flooding, the engineer designed a flashboard that could be easily removed for maintenance purposes.
With the new flashboard in place, the reservoir was able to hold more water after recent heavy rains.

Synonyms

flashboarding

vsflashboard

Specialized

9.9

Boards that you put on top of a dam to raise the water level for a short time

is the same concept but expressed as the base noun form

Surface Forms

flashboard singular

flashboards plural

Morphology

flashboard = flash + board (opaque) = flash + board

Although formed as 'flash' + 'board', the technical hydraulic meaning (a removable board used to raise water level) is specialized and not inferable from the everyday meanings of 'flash' and 'board'.

Etymology

Flashboard is a simple compound of flash ('sudden') and board ('flat piece of wood'), so picture a plank put quickly in place to hold back a rush of water. That's why a flashboard is a removable board placed on top of a dam to raise the water level temporarily.