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Water level 
Summary
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.[1]
See also edit
- Water level (device), device utilizing the surface of liquid water to establish a local horizontal plane of reference
- Flood stage
- Hydraulic head
- Stream gauge
- Tide gauge
- Level sensor
- Liquid level
- Reference water level
- Stage (hydrology)
- Sea level
References edit
- ^ ISO 772: 1996. Hydrometric determinations – Vocabulary and symbols.