Большой англо-русский и русско-английский словарь
highest water level, maximum flood level, maximum operating level, maximum water level, normal maximum operating level, maximum water surface, top of exclusive flood-control capacity
Англо-русский словарь технических терминов
highest water level, maximum water level, top of exclusive flood-control capacity
Русско-английский политехнический словарь
highest water level, maximum water level, top of exclusive flood-control capacity