New South Wales Consolidated Regulations

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WATER SHARING PLAN FOR THE LOWER MURRUMBIDGEE 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" (work) 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.
"available head" is the difference between the depth to the top of the target aquifer, and an initial piezometric level.
"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.
"bedrock" is the solid rock underlying unconsolidated sediments such as the soil and weathered rock. Bedrock is a general term for solid rock that lies beneath soil, loose sediments, or other unconsolidated material.
"buffer zone" is an area surrounding a groundwater dependent ecosystem or other feature (such as an area of low quality) within which extraction, or the impact of extraction, is restricted.
"contoured drawdown or recovery depths" refers to spatial water levels data indicating drawdown or lack of recovery.
"drawdown" refers to a lowering of the level to which water will rise in cased bores. 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 the long-term average annual recharge and storage that can be extracted, on average, each water accounting year.
"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 wholly or partially 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 requirements for 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.
"piezometric surface (potentiometric surface)" is a surface that represents the level to which water will rise in cased bores. (The watertable is the potentiometric surface of an unconfined aquifer).
"recharge" is the addition of water, usually by infiltration, to an aquifer.
"recovery depths" see contoured drawdown
"share component" is the share component of an access licence.
"unconsolidated alluvial aquifers" are aquifers formed by sediment 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.
"watertable" is the upper surface of an unconfined aquifer.


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