Bed sill
From BAWiki
Definition
Control structure lying in the river bed perpendicular to the flow extending beyond it; cross work in the river bed extending beayond it.
Synonyms
Abbreviations
Source
DIN 4047
Competence for Waterways
Control structure lying in the river bed perpendicular to the flow extending beyond it; cross work in the river bed extending beayond it.
DIN 4047