A vertical tubular member connected at its top and bottom to the steam and water space respectively of a boiler, to which the water gauge, water level controls, and fuel cutoff may be connected.

The water which rises in a vertical tube when the lower end is immersed in a current.

The water in some water body treated as spatially homogeneous having light reduced with depth from the surface.

Description of the character of ocean or lake waters based upon a vertical profile that recognizes differences related to depth.

A tube filled with water and attached to the front of a transducer to couple an ultrasonic beam to a test object. A delay line between the initial pulse and the front surface signal. Also serves as a coupling device. See also delay line.

The water in the aquarium from the top of the substrate to the surface of the water.

refers to a vertical expanse of sea water stretching from the ocean surface to just above the ocean floor, habitat for pelagic organisms

Water in a lake between the surface and sediments. Used in vertical measurements used to characterize lake water.

A unit of pressure measurement where 27.7 inches water column equals 1 PSIG.

a term applied to the vertical section of water from the surface to the bottom.

the entire depth of a water body, from its surface to the bottom.

The water located vertically over a specific location on the floor of a water body.

All the water between the bottom of a body of water and the surface

The vertical column of seawater that extends from the surface to the bottom.

a vertical column existing in the main body of a pond or lake. When we sweep a sample net through this "section" of such a water body, we say we are sampling the water column. The purpose here is to collect insects who move freely through, and whose habitat include, the entire water system, such as zooplankton and water boatmen (order: hemiptera).

Unit of measurement for gas pressure in inches of water. Approximately 28 inches of water equals one psi.

A unit of measurement. The pressure required to support a column of water one inch high. Typically reported as inches w.c. (water column); 27.68 inches of water is equal to one pound per square inch (psi).

A vertical segment of a lake that extends from the surface to the bottom.

The water located vertically over a specific point or station.

The layer of water between surface and bottom sediments. The water column contains dissolved and particulate matter and provides habitat for plankton, fish, and marine mammals.

A cross section of a body of water from a point on the surface, straight down to the bottom.

A large cast-iron column fitted with a delivery hose (often called 'The Bag') and control valve wheel, to enable locomotives to take on water. Water columns were provided at engine sheds and at most important stations along the line, as steam engines consumed a great deal of water and required frequent replenishment. Variants included a "parachute water column" which had a cylindrical storage tank positioned on top, and a "water crane" which was a water column with an extension arm which could be swung to one side. Another pattern was a brick built structure with a cast-iron water storage tank over. These were provided where the water supply was uncertain. Locomotive water was invariably pumped from springs, ponds, canals or rivers, and not from purified drinking water mains.

Vertical arrangement of water from the surface to the bottom of a water body.

all the water in a lake from the sediments at the bottom to the surface.

The depth from the water's surface to submerged bottom land.

The water in a lake, estuary, or ocean which extends from the bottom sediments to the water surface. The water column contains dissolved and particulate matter and is the habitat for fish, plankton, and marine mammals.

The area between the surface and the bottom of a body of water

The pressure it takes to push a column of water up vertically. One inch of water column is the amount of pressure it would take to push a column of water in a tube up one inch.

The portion of an aquatic or marine environment extending from the water surface to the bottom.

the water between the surface and the bottom of a lake, river, estuary, or ocean.

vertical profile of a body of water.

A water column is a conceptual column of water from surface to bottom sediments.http://waterontheweb.org/resources/glossary.html#W This concept is used chiefly for environmental studies evaluating the stratification or mixing (e.g. by wind induced currents) of the thermal or chemically stratified layers in a lake, stream or ocean. Some of the common parameters analysed in the water column are: p H, turbidity, temperature, salinity, total dissolved solids, various pesticides, pathogens and a wide variety of chemicals and biota.