Water level

Water level, also known as gauge height or stage, is the elevation of the free surface of a sea, stream, lake or reservoir relative to a specified vertical datum.ISO 772: 1996. Hydrometric determinations – Vocabulary and symbols. Over long distances, neglecting external forcings (such as wind), water level tends to conform to an equigeopotential surface.Merriam Webster Dictionary Definition of level (Entry 3 of 3): conforming to the curvature of the liquid parts of the earth's surface

See also Water level (device), device utilizing the surface of liquid water to establish a local horizontal plane of reference Flood stage Hydraulic head Stream gauge Water level gauges Tide gauge Level sensor Liquid level Reference water level Stage (hydrology) Sea level

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