water level may refer to:
water level (surface), the level of the free surface of a body of water, the water depth flood stage high water mark high tide line water table level, the level of subsurface water Water level (device), a liquid filled device that provides an equal height level at each end, allowing finding equal height at two distant points Waterline, the water level on the hull of a boat Water Level Route, a railroad line in the United States Waterlevel Highway, a highway in Tennessee; see APD-40
See also
Waterline (disambiguation) Level (disambiguation)