Translation guide
The highest level reached by water, or metaphorically the peak of achievement or success.
The highest point reached by a body of water, such as a river, lake, or tide.
Standard technical term for the highest water level recorded or reached.
The high-water mark of this river was recorded last year.
Specifically the high-water mark of a tide, the line left on the shore.
The high-water mark was clearly visible on the sandy beach.
A more general term for high water level, used in some contexts but less common than 最高水位.
The embankment collapsed due to the high water level.
The highest point of success, performance, or development in a non-physical sense.
Literally 'highest point reached', used for career peaks, record highs, or best achievements.
This work is the high-water mark of his career.
Refers to the peak period of one's powers, popularity, or success. Often used for artists or athletes.
Loanword from English 'peak', very common in casual and business contexts.
最高水位 is the general term for the highest water level in any context (rivers, floods, etc.), while 満潮線 specifically refers to the high-tide line on a shore.
The flood's high-water mark exceeded the levee.
There were many shells along the high-water mark.
ピーク is very common in everyday speech for describing the peak of anything (popularity, performance, stress). It can be used with に達する (to reach a peak) or as a noun modifier (ピーク時).
Tourist numbers reach their high-water mark in summer.
The high-water mark on the wall showed how deep the flood was.
That album was the high-water mark of 80s rock.
She reached her high-water mark in the 90s.
Sales hit their high-water mark last year.
Literally 'highest tide', used figuratively for the climax or peak of excitement, activity, or a story.
The festival reached its high-water mark.