Synonyms to high water mark

Plimsoll line, Plimsoll mark, border line, bound, boundary, boundary condition, boundary line, bourn, break boundary, breakoff point, ceiling, circumscription, compass, confine, cutoff, cutoff point, deadline, delimitation, determinant, division line, end, extremity, finish, floor, frontier, hedge, interface, limen, limit, limitation, limiting factor, line, line of demarcation, load waterline, low-water mark, lower limit, march, mark, mete, start, starting line, starting point, target date, term, terminal date, terminus, threshold, tidemark, time allotment, upper limit, waterline, watermark