High water mark (disambiguation)

A high water mark is a point that represents the maximum rise of a body of water over land.

High water mark may also refer to:

• High-water mark of the Confederacy, the turning point of the Battle of Gettysburg
  • High Water Mark of the Rebellion Monument, a Gettysburg Battlefield memorial
• High water marks, used to determine hedge fund performance fees (see Hedge fund#Fees paid to hedge funds)
• High-water mark (computer security), a computer security model wherein a document takes on the highest level of confidentiality allowed to the last person to access it