water level is a noun meaning "the level of the surface of a body of water". It carries 4 recorded senses.
underground surface below which the ground is wholly saturated with water
“spring rains had raised the water table”
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
a water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube
Definitions, synonyms and semantic relations for water level come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.