A measured height of water above a reference datum. Frequently used to describe the height of water in a stream, lake, well, canal or other water body.

the height of the water surface above the gage datum (zero point). Gage height is often used interchangeably with the more general term, stage, although gage height is more appropriate when used with a gage reading.

(G.H.) is the water-surface elevation referred to some arbitrary gage datum. Gage height is often used interchangeably with the more general term "stage," although gage height is more appropriate when used with a reading on a gage.

The water-surface elevation referred to some arbitrary datum. The gage height added to the elevation of the datum of the gage represents the water-surface elevation. For example, the elevation of the datum of the gage might be 100.00 feet, which, when added to a gage height of 12.50 feet, represents a water-surface elevation of 112.50 feet.

See Stage.