noun
crest of dam; top of dam
Technical term used in civil engineering and dam construction.
堤頂の幅は設計基準で決められている。
The width of the dam crest is determined by design standards.
大雨で水位が上がり、堤頂まであと数十センチとなった。
The water level rose due to heavy rain, leaving only a few dozen centimeters to the top of the dam.