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  

L

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The extensive cooling of the central and eastern Pacific Ocean. In Australia (particularly eastern Australia), La Niña events are associated with an increased probability of wetter conditions. See the Weather and Climate page on La Niña for more information.

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Relating to a lake. Lacustrine sediments, for example, are those that are deposited in lakes.

Source: R F Isbell, 1996, The Australian Soil Classification, CSIRO Publishing, Melbourne.

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A physical feature that is the solid ground of the Earth.

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Landsat Thematic Mapper 5 – a medium resolution satellite image sensor obtained twice monthly over Australia. Data can be obtained from United States Geological Survey.

Source: Engel, J., and Weinstein, O., (1983). The Thematic Mapper – an overview, IEEE Transactions On Geoscience and Remote Sensing, GE-21:258-265

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All water in the natural environment that is not surface water or groundwater. Includes water in the unsaturated zone of the soil, on the flood plain or in water bodies that are disconnected from the rivers, such as natural lakes, ponds or wetlands.

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Inflows to the region's landscape water.

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A combination of surface runoff and groundwater recharge.

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An obligation that derives from: (a) a contract, (b) legislation, or (c) other operation of law.

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The volume of water extracted from regulated groundwater assets pursuant to the rules of the groundwater allocation licence.

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A piece of water information having a generic name and definition. In a given region, it consists of a volumetric value, expressed in megalitres (ML), and notes providing supporting information. The supporting information may include what the value represents, how it was quantified and how it compares to the previous year. In the National Water Account, line items may be reported in the water accounting statements and in the region notes.

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A note that is specific to a line item that appears in the water accounting statements or the region notes of the National Water Account.

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GDE Atlas terminology identifying the number of rules that could be applied to a polygon given the GIS data available for the analysis. The ‘Lines of Evidence’ result shows how much data the GDE potential result was based on, and therefore is a pragmatic indicator of the reliability of the GDE potential result. This is an attribute for each derived GDE polygon.

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A table with drillers' or geologists' description of rock or sediment types along a borehole.

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Describes situations where intense rainfall is expected to cause high run-off volumes in small catchments or localised areas with minimal impact on main streams.

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A stream from which water is lost to the surrounding and underlying substrate via infiltration through the streambed and banks.

Source: Richardson, S., et al., (2011). Australian groundwater-dependent ecosystem toolbox part 1: assessment framework, Waterlines report, National Water Commission, Canberra

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GDE Atlas terminology used to classify ecosystems as unlikely to be interacting with groundwater. It indicates that groundwater is unlikely to be present, or if it is present, the ecosystem is unlikely to use it. This categorisation means that all datasets suggest groundwater interaction is unlikely, or that the most reliable (and most heavily weighted) datasets suggest that groundwater interaction is unlikely.

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