4618.0 - Water Use on Australian Farms, 2002-03  
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 31/03/2005   
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Agricultural establishment


An establishment which is engaged mainly in agricultural activities.


Allocation


The volume of water allocated for use either within or external to a surface water management area by way of licensing arrangements and formal entitlements to water.


Area of holding


Includes all occupied and maintained land owned, leased or rented, land worked by sharefarmers and all road permits by a particular agricultural establishment. Excludes land leased or rented to others.


Application rate


Rate at which water is applied to an area or crop, measured in megalitres per hectare.


Area entitlement


An ongoing right to access water, the quantity of which is restricted by area.


Centre pivot


Automated sprinkler irrigation achieved by automatically rotating the sprinkler pipe or boom, supplying water to the sprinkler heads or nozzles, as a radius from the centre of the field to be irrigated.


Drip irrigation


An irrigation technique that applies water to crops by methods that deliver the water to individual plants or rows of crops (also termed 'trickle' techniques).


Entitlement


An individual's ongoing right to access water.


Entitlement allocated


The quantity of an individuals total entitlement that they are allowed to access in a given period.


Estimated value of agricultural operations (EVAO)


An estimation of the value of agricultural activity undertaken by an agricultural establishment. Three-year average weighted prices are applied to livestock turnoff and livestock numbers on the farm, and to area and production data for crops. The resultant aggregation of these commodity values is the EVAO. It is not an indicator of the value of receipts of individual farms but rather an indicator of the extent of agricultural activity.


Gigalitre


One thousand million litres.


Groundwater


Water occurring below the ground's surface.


Groundwater rights


The legal right to access water naturally occurring below the ground surface.


Irrigation scheduling


The process of making decisions about when to irrigate and how much water to apply to an irrigated crop to maximise net returns.


Laser levelling


The use of a laser guided land plane to re-level the paddock surface, filling low spots and removing high spots to give a uniform paddock surface and to create a suitable slope for improving watering efficiency.


Levees/banks


Includes contour, graded and interceptor banks.


Licensed allocation


The maximum volume of water available to the holder of a licence to extract water.


Megalitre


One million litres.


Micro spray/micro-irrigation


System of irrigation designed to use low pressure and small flows of water to mini-sprays, mini-sprinklers, drippers and piping with a series of small openings.


Permanent transfer of water rights


The transfer of water entitlements to a new owner.


Recycled or re-used water (off-farm)


Waste water, that may have been treated to some extent, that is used again without first being discharged to the environment eg. sewage water brought onto a property for the purpose of irrigation.


Recycled or re-used water (on-farm)


Water reused on-site.


Soil probes


A soil moisture monitoring system, used to assist in determining when to irrigate and also how much water to apply.


Sprinkler irrigation


Irrigation applied from various forms of overhead sprays (also known as spray irrigation).


Surface irrigation


Irrigation in the form of controlled flooding of paddocks or irrigation bays.


Surface water


Water flowing or held in streams, rivers and other wetlands in the landscape.


Temporary transfer of water rights


The lease of water entitlements for a specified period of time, usually one year.


Tensiometer


Device used to measure the water content of soil by measuring the tension with which the water is held in the soil.


Town or country reticulated mains supply


Water supplied through a non-natural network where an economic transaction has occured for the exchange of this water.


Trickle irrigation


As for drip irrigation.


Volume entitlement


An ongoing right to access water, the quantity of which is restricted by volume.


Water right(s)


A formally established, or legal authority to take water from a body of water and to retain the benefits of its use. Rights may be attenuated in different ways and are referred to in different jurisdictions as licences, concessions, permits, access entitlements or allocations.


Water trading


The process of buying and selling water entitlements, where entitlements can include water supplied as part of a licence, allocation or other entitlement.