Water level Meaning, Definition & Usage

  1. noun the level of the surface of a body of water
  2. noun underground surface below which the ground is wholly saturated with water
    groundwater level; water table.
    • spring rains had raised the water table
  3. noun a line corresponding to the surface of the water when the vessel is afloat on an even keel; often painted on the hull of a ship
    water line; waterline.
  4. noun a water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube

WordNet

Definitions
  1. an instrument to show the level by means the surface of water in a trough, or in upright tubes connected by a pipe.

Webster 1913