Australian Water Information Dictionary

Alphabetical list of items

A   B   C   D   E   F   G   H   I   K   L   M   N   O   P   Q   R   S   T   U   V   W   Y   Z   other  

V

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The areas below the ground where void spaces are filled with a mixture of water under pressure less than atmospheric which includes water held by capillarity and air (gases) under atmospheric pressure.

Source: Poehls DJ and Smith GJ 2009, Encyclopedic dictionary of hydrogeology, Elsevier Inc., 517 pp.

Synonym: unsaturated zone

This definition applies to:

The difference between the amount of moisture in the air and how much moisture the air can hold when it is saturated.

Source: Water Regulations 2008 Schedule 3 Part 1

This definition applies to:

Data organised as geometry consisting of points, lines and polygons.

This definition applies to:

The volume of water stored at a particular time and date. It excludes the dead storage volume and hence is the volume of water that can be accessed under normal circumstances without the installation of additional infrastructure. See the water storage diagram for more information.

Synonym: accessible storage volume

This definition applies to:

The average value (dollars per megalitre) of the water traded where each trade is weighted proportionally by the volume of water (in megalitre) involved in the sale. This provides a more accurate representation of the price (i.e. high volume trades generally attract a ‘bulk discount’).

This definition applies to: