New South Wales Consolidated Regulations

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WATER SHARING PLAN FOR THE UPPER AND LOWER NAMOI GROUNDWATER SOURCES 2003 - SCHEDULE 1

SCHEDULE 1 – Dictionary

The following definitions apply to this Plan in addition to the definitions set out in the Act:
"abandoned" refers to a water supply work (bore) that is no longer being used.
"aquifer compaction" refers to the reduction in the porosity (pore spaces) of an aquifer, and may result from over pumping the aquifer.
"aquitards" are geologic units that are of low permeability. Aquitards usually form a layer in a geologic sequence. They may contain water, but would not yield reasonable volumes of water to bores or wells. An example of an aquitard would be a saturated clay layer that is overlying a saturated sandy aquifer.
"aquitard compaction" refers to the reduction in the porosity (pore spaces) of an aquitard.
"available water" in relation to a water management area or water source, is the water that is available in that area or water source in accordance with an available water determination that is in force in respect of that area or water source.
"available water determination" is a written Order by the Minister as to the availability of water for the various categories of access licence in relation to a specified water management area or water source.

Note: An available water determination gives rise to a water allocation that is credited to a water allocation account for each licensed holder.
"compaction" see aquifer compaction.
"component" see share component.
"drawdown" refers to a lowering of the piezometric surface. Natural drawdown may occur due to seasonal climatic changes. Groundwater pumping may also result in seasonal and long-term drawdown.
"extraction limit" is the amount of water that can be extracted in each water accounting year of this Plan., subject to water allocation account management rules.
"Great Artesian Basin" is a ‘confined’ groundwater basin comprised of a complex multi-layered system of water bearing strata (porous sandstone aquifers) separated by largely impervious rock units, underlying largely arid and semi-arid landscapes to the west of the Great Dividing Range, and extending from Queensland through New South Wales and the Northern Territory, to South Australia.
"groundwater" is water that occurs beneath the ground surface in the saturated zone.
"groundwater dependent ecosystems" are ecosystems which have their species composition and natural ecological processes determined by groundwater.
"long term average storage component" is the volume of water in the aquifer less the combined average annual recharge and requirements for basic rights at the commencement of this plan, and exceeds the combined requirements for basic rights extraction and supplementary access provided for in this Plan.
"monitoring bore" refers to a bore constructed for the purpose of measuring water levels and/or taking samples for water quality analysis.
"recharge" is the addition of water, usually by infiltration, to an aquifer.
"replacement water supply work (bore)" is a bore constructed within 20 metres of, and which replaces, an existing water supply work (bore) licensed under the Act and which has an internal diameter no greater than 110 percent of the internal diameter of the bore it replaces.
"share component" is the share component of an access licence.
"unconsolidated alluvial sediments" are sediments deposited by the action of flowing water, in particular along river beds and floodplains, but not including lakes and seas.
"water year" is a 12 month period from 1 July to 30 June.


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