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Glossary of Water Terms

Glossary of Water Terms

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Abandoned (work)

A water supply work (bore) that is no longer being used.

Access Licence

The licence referred to in Section 56 of the Water Management Act 2000, which includes a renewal of an access licence. An access licence entitles its holder to specified shares in the available water within a specified water management area or from a specified water source (the share component), and to take water at specified times, at specified rates or in specified circumstances, or in any combination of these, and in specified areas or from specified locations, (the extraction component). The share component of an access licence may be expressed:

  • as a specified maximum volume over a specified period, or
  • as a specified proportion of the available water, or
  • as a specified proportion of the storage capacity of a specified dam or other storage work and a specified proportion of the inflow to that dam or work.

Shares in available water may be assigned generally or to specified categories of access licence. In the case of a local water utility licence, its share component is to be expressed as a specified volume per year. The Minister may, by order published in the Gazette, declare that the access licences for specified water management areas are to be issued separately for the share components and extraction components. Note: If the share component and extraction component of an access licence have been issued separately, those components may be held by different persons. In the case of a water management area for which separate access licences are issued for the share component and extraction component, any requirement of this or any other Act for a person to be the holder of an access licence is taken to be a requirement for the person to be:

  • The holder of an access licence for the share component, and
  • The holder of an access licence for the extraction component.

Note: An access licence does not confer a right on any person to use water for any particular purpose (that right is conferred by a water use approval), and does not confer a right on any person to construct or use a water supply work (that right is conferred by a water supply work approval).

Access Licence Dealing

Access licence dealing refers to a range of changes to an access licence or the water held under the account for that licence. These include a change in the ownership of all or part of an access licence, a change in the location from which water is extracted, movement of extraction components or water allocations between access licences, or a change in the category of the access licence.

Account Balance

The volume of water available on an account after a transaction has been taken into account.

Account Limit

This is the maximum Account Balance allowable at the end of each day for the Access Licence. It is defined as a percentage of the Annual Share Component for the Access Licence. Actual Account Balance at any time beyond this limit is forfeited.

Account Limit Forfeit

If the Access Licence is subject to an Account Limit, and if the AWD sub-account balance exceeds the Account Limit, the excess is debited from the AWD sub-account. The balance is checked automatically at midnight each day.

Account Transaction volume

Volumes of water that have been either credited or debited against an access licence. These transactions can include 71T, 71V, AWDs and usage.

Account water

The balance in an access licence water allocation account at a particular time. Note: An access licence water allocation account records water allocations accrued under the licence as well as water allocations acquired, used or transferred, or re-credited. The operation of the account is also governed by rules for the carrying over of credits from one accounting period to the next and rules for the maximum credit that may be allowed to accumulate in the account as established in a water sharing plan. Water allocations are the shares of available water accrued under an access licence from time to time as a result of available water determinations.

Actual Unaccounted Difference

The volume of water (usually between two points on a stream) which has been lost to the system due to various actions / situations which are not directly known. Examples include Evaporation, Absorption, and Unlawful Extraction.

Airspace

A volume in a water storage, which is kept empty for the purpose of mitigating potential floods.

Allocation Announcement

The basis upon which Water Allocation is calculated from time to time. It may take the form of an Initial Announcement at the beginning of the Water Year or a Supplementary Announcement during the Water Year. It is expressed as a percentage of Entitlement. See also Groundwater Property Allocation.

Allocation Assignment

An Allocation assignment (previously known as a Temporary Transfer) is the formal movement of a volume of water from one access licence to another and is valid only within a water year.

  • 71T Assignment of water allocations between access licences
    • Water allocations may be assigned from one access licence to another in accordance with this section.
    • The holders of two or more access licences may apply to the Minister for consent to the assignment of water allocations between the water allocation accounts for their respective access licences.
    • Such an application may only be made with respect to water allocations currently credited to the access licence from which water allocations are to be assigned.
    • On completing an assignment to which consent has been given under this section, the parties to the assignment must cause notice of that fact to be given to the Minister.
  • 71V Interstate assignment of water allocations
    • The Minister may enter into an agreement with a Minister of any other State or Territory for the interstate assignment of water allocations and their corresponding interstate equivalents.
    • On an application made pursuant to such an agreement, the Minister may consent to the crediting of water allocations to an access licence, or the debiting of water allocations from an access licence, to give effect to such an assignment.
    • Such an application may only be made with respect to water allocations currently credited to the access licence from which water allocations are to be assigned.

Alternate Meter

A Meter (or series of meters) attached to the device which drives the extraction pump at a Licensed Work.

Announcement

An Announcement is made to a Water Source and Access Licence Category and applies to all Access Licences in the Water Source with that Licence Category. The key elements of an Announcement are:

  • Water Source
  • Licence Category
  • Announcement Type
  • Date or period that the Announcement applies to
  • Percentage Allocation – transaction change to apply to the Access Licence.

Annual Use Limit

This is the maximum Annual Usage allowable for the Access Licence. It is defined as a percentage of the Annual Share Component for the Access Licence.

Approval

A water use approval, a water management work approval or an activity approval (and includes a renewal of an approval).

Aquifer

A geological structure or formation, or an artificial landfill, that is permeated with water or is capable of being permeated with water.

Aquifer compaction

The reduction in the porosity (pore spaces) of an aquifer, and may result from over pumping the aquifer.

Aquifer Licence

A licence granting access to using an amount of water from an aquifer.

Assessment of Usage

The Determination of a volume of water taken by an access licence, where a water meter is not properly functioning. Assessments must be made by a State Water officer; customers are not permitted to make their own usage assessments.

Associated Groundwater Licence

One of a number of Licensed Works (bores) which relate to the one Property Account.

Assured inflows

The volumes of water which hydro-logic information indicates are the minimum which can be expected to flow into the water source.

Available head

The difference between the depth to the top of the target aquifer, and an initial piezometric level.

Available water

The water that is available in a water management 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 (AWD)

From time to time, the Minister may, by order in writing, make either or both of the following determinations (an "available water determination"):

  1. a determination as to the availability of water for one or more categories or subcategories of access licences in relation to one or more specified water management areas or water sources,
  2. while an order is in force under section 60 (2), a determination as to the availability of water for one or more individual access licences in relation to one or more specified water management areas or water sources.
  3. An available water determination that is made in relation to a particular category of access licence applies to all subcategories of that category except to the extent to which it otherwise provides.
  4. The regulations may make provision for or with respect to the manner in which an available water determination is to be notified.
  5. If the extraction component of an access licence authorises the taking of water from a water source specified in the share component of the licence and from another water source not so specified and those water sources are vertically abutting (either wholly or partly) water sources, the available water determinations that apply to the licence are those made in relation to the water source specified in the share component of the licence.
  6. If the Minister consents to the amendment of an access licence to enable water to be taken by a specified water supply work or group of water supply works in circumstances referred to in section 71W (2) (b) or (c), the available water determinations that apply to the licence are those made in relation to the water source specified in the share component of the licence.

AWD Transaction account

The volume of water that has been credited to an access licence through the Available Water Determination process or an Allocation Assignment.

AWD sub-account balance

The balance of all transactions on the AWD transaction account.

AWD + Carryover Limit

AWD + Carryover Limit is the maximum balance of the AWD sub-account for an Access Licence. AWDs made in excess of this limit are debited from the AWD sub-account. It is expressed as a percentage of the Annual Share Component for the Access Licence.

AWD + Carryover + Uncontrolled Flow Usage Limit

This is the maximum limit of AWDs, Carryover and Uncontrolled Flow Usage allowable for an Access Licence to access Uncontrolled Flow Water. It is defined as a percentage of the Annual Share Component. Supplementary Water taken in excess of this limit is not considered Uncontrolled Flow Usage and is debited to the Access Licence Water Account.

AWD + Uncontrolled Flow Usage Limit

This is the maximum limit of AWDs and Uncontrolled Flow Usage allowable for an access licence to access Supplementary Water. It is defined as a percentage of the Annual Share Component. Uncontrolled Water taken in excess of this limit is not considered Uncontrolled Flow Usage and is debited to the Access Licence Water Account.

AWD Limit for Uncontrolled Flow

This is the maximum allowable for an Access Licence to access Uncontrolled Flow water. It is defined as a percentage of the Annual Share Component. If the aggregate of all announced AWDs exceeds this limit, no Uncontrolled Flow usage can be taken and all previous usage, which may have been attributed to Uncontrolled Flow usage, is debited to the Access Licence Water Account.

AWD Volume

AWD percentage * Share Component Note that this only works if the AWD is expressed as a percentage. In other cases, the AWD might be expressed as a fixed volume.

Backup Meter

Where a Primary Meter or an Alternate Meter is a three phase Electricity Meter (thereby actually consisting of three Meters, one for each phase), one of the three Meters is selected and consistently used as the Significant Meter and the other two are used as Alternate Meters in the event of failure of the Significant Meter. An Alternate Meter is sometimes referred to as a Backup Meter.

Base Charge

IPART determines the periodic pricing regime on a three tiered basis.

  • The Base Charge is a flat rate $.cc charge applied on a per Licence or per Property Account basis
  • The Entitlement Charge (or Fixed Charge) is based on a $.cc charge per ML of Entitlement
  • The Usage Charge is based on a $.cc charge per ML of Water Taken The application of the IPART Pricing Requirements is controlled within each Valley by the Business Information Function.

Basic landholder rights

Basic landholder rights cover three types of rights to extract water from a river without an access licence. The first allows rural landholders along the riverfront to extract water for domestic household and stock watering purposes, replacing riparian rights under the Water Act 1912. Harvestable rights allow landholders to capture a portion of the runoff from their land in farm dams. Since they do not involve extraction directly from the river they are generally not provided for in Water Sharing Plans. Native Title Rights allow Aboriginal native title holders (as determined under the Commonwealth’s Native Titles Act 1993) to extract water for a range of personal, domestic and non-commercial communal purposes.

Bedrock

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

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.

Bulk access regime

The bulk access regime is the water sharing rules that will determine how much water will be available for extraction by all licensed water users within a Water Sharing Plan.

CAIRO

A computer system (based on Microsoft Excel) which is a tool for River Operations. By the entry of known factors such as Water Orders and Water Taken, and by using empirical data such as Actual Unaccounted Differences and climatic data, it assists in the calculation of available flows at various points along a Stream.

CAIRO: HYDSYS

A computer system which takes water depth / flow readings from Gauging Stations – usually but not necessarily by telemetry. It is a variation on the corporate HYDSYS and contains its own Rating Tables peculiar to CAIRO. These tables translate data such as Pond Depth, Flow Rate, etc into volumes of water. It is a fundamental source of input to CAIRO.

Cadastral

A term used to describe the records of a cadastre. A means of defining landed property in terms of Lot No., Section, Deposition Plan (DP), County and Parish rather than by geographical location or street address.

Cadastre

An official register of the ownership, extent, and value of real property in a given area, used as a basis of survey or taxation.

Calibration Factor

The factor which provides a correction to the readings from a Primary Meter or an Alternate Meter, based on known variations, to determine the actual volume of water extracted through a Licensed Works.

Cancellation (of Authority)

The Water Act 1912 makes provision for the cancellation of a Licence, Authority, Permit etc under certain circumstances. A Cancelled Licence will not be restored.

Cap

As defined in Schedule F of the Murray Darling Basin Agreement.

Carryover

That part of an Allocation which remains unused at the end of the Water Year and which, under certain circumstances and subject to conditions, may be taken in the following Water Year.

Carryover Evaporation Reduction

A percentage reduction, applied to the Carryover sub-account. Carryover Evaporation Reduction Announcements can be issued any time during a Water Year.

Carryover Limit

The maximum End of Year Account Balance allowable for the Access Licence. It is defined as a percentage of the Annual Share Component for the Access Licence. At the end of the Open Water Year, actual Account Balance beyond this limit is forfeited.

Carryover Transaction volume

The volume of water carried over from the previous water year as well as any allocation assignments that have been credited or debited on the account.

Carryover sub-account balance

The balance of the account after each transaction has occurred is recorded in this field.

Carryover Spill Reduction

This is a percentage reduction of the Carryover sub-account. Carryover Spill Reduction Announcements can be issued at any time during a Water Year.

Catchment

The name of a river, creek or lake. It may represent a number of streams such as unnamed water courses. The names are generally in accordance with the Geographical Names Board.

Catchment Code

A code representing a stream name. The codes are structured within a valley and may represent reaches of a valley from highest order stream upstream. A catchment name may have multiple catchment codes for administrative convenience. For example, the Murray valley has five catchment codes in sequence.

Coleambally Irrigation (Conveyance) Licence

Special licence negotiated for Coleambally Irrigation.

Conjunctive Use

The situation which may occur when the holder of a Licence pertaining to Regulated Surface Water also holds a Groundwater Licence which services the same property. When the Regulated Surface Water Allocation is less than 100%, under certain circumstances and subject to conditions, the shortfall may be made up from the Groundwater Work. See also Groundwater MakeUp.

Contoured draw-down

Refers to spatial water levels data indicating draw-down or lack of recovery. Sometimes referred to as Recovery depths.

Conversion factor

The adjustment factor that may be applied to the size of share components when they are part of a dealing under 71B or 71E of the Act.

Conveyancing (Irrigation Corp.) Licence

Irrigation corporations receive specific allocations of water. For example, Murray Irrigation Limited’s water delivery losses within their supply area were historically met from water allowances set aside before allocation announcements were made. This arrangement is replaced by a 300,000 ML conveyance access licence. A 30,000 ML conveyance access licence will also be issued and classed as adaptive environmental water. These receive specific allocations of water.

Continuous Accounting

See also Depletion Accounting. This is a process within the Water Allocation Management Function wherein end of year unused allocations are automatically carried forward without being subject to Carryover provisions and the like.

Dam Spill Reduction

An Announced Reduction in a previously Announced Carryover percentage due to spillage of water from the primary storage. The Reduction is enforced because the water making up the Carryover was allocated in a previous season or Water Year and licence holders were given the opportunity to take it during that year. If the dam spills (because its storage capacity has been exceeded), the volume of the spill will be greater because of the Carryover.

Dealings

Any amendments to existing water Access Licences. There are 11 different categories of Dealing covered by section 71 of the WMA and provided for in LAS:

  • The transfer of an Access Licence or Holding from one person to another. Covered in section 71A (71M).
  • The term transfer of the water entitlements conferred by a licence from one person to another, or reduction of the term. Covered by section 71N.
  • The granting of an Access Licence of a different category or sub category subsequent to cancellation of the original Access Licence (conversion to a new category.) Covered in section 71B (71O).
  • The subdivision of an Access Licence into two or more Access Licences, or the consolidation of two or more Access Licences into one Access Licences. Covered under section 71C (71P).
  • The assignment of rights between Access Licences. Covered under section 71D(71Q).
  • The granting of a new Access Licence after amending the share component of the original Access Licences (Change of water source). Covered in section 71E (71R).
  • The amendment of the extraction component of an existing Access Licence. Covered in section 71F (71S).
  • The temporary assignment of water allocations between Access Licences. Covered by section 71G (71T).
  • The granting or Cancelling of an Access Licence to give effect to the interstate transfer of an Access Licence. Covered under section 71H (71U).
  • The crediting or debiting of water allocations to or from an existing Access Licence to give effect to the interstate assignment of water allocations. Covered under section 71I (71V).
  • The amendment of an Access Licences to nominate or remove water supply works. Covered under section 71J (71W).

DECCW

The Department of Environment, Climate Change and Water, formerly known as the Department of Water and Energy and the Department of Environment and Climate Change.

Depletion Accounting

See also Continuous Accounting. This is the process within the Water Allocation Management Function wherein end of year unused allocations are subject to Carryover provisions and the like. This is the standard operational Water Accounting Method currently in use.

DWE

The Department of Water and Energy. Now know as the Department of Environment, Climate Change and Water.

Domestic and Stock rights

The rights conferred on a landholder by Section 52 of WMA 2000.

Domestic consumption

The consumption of water for normal household purposes in domestic premises situated on the land.

Dozer Licence

A Dozer Licence, or Sleeper Licence, is one that uses very little of its Allocation over the course of the Water Year. See also Sleeper Licence.

Draw-down

A lowering of the level to which water will rise in cased bores. Natural draw-down may occur due to seasonal climatic changes. Groundwater pumping may also result in seasonal and long-term draw-down.

Drought Suspense sub-account balance

The amount of water that has been suspended on an access licence due to continuing drought conditions. As conditions improve, water is re-credited to the access licence for use. This sub account is only operational during suspension of Water Sharing Plans.

Embargoes

Embargoes prohibit the granting of applications for further access licences, except for those purposes specifically exempted, for example, for increased town water supplies.

Effluent replenishment flows

Flows provided to effluent river systems downstream of the water source.

Endangered ecological communities

Ecological communities listed in Schedule 1 of the Threatened Species Conservation Act 1995 or Schedule 4 of the Fisheries Management Act 1994.

Entitlement

The volumetric quantity of water specified on the licence as being the maximum that can be taken during any year, subject to Allocation Announcement(s).

Entitlement Charge

IPART determine the periodic pricing regime on a three tiered basis: The Base Charge is a flat rate $.cc charge applied on a per Licence or per Property Account basis; The Entitlement Charge (or Fixed Charge) is based on a $.cc charge per ML of Entitlement; The Usage Charge is based on a $.cc charge per ML of Water Taken. The application of the IPART Pricing Requirements is controlled within each Valley by the Business Information Function.

Environmental Flow

A volume of water released from the Head works for environmental purposes. This is an important input to the River Operations Function. See also Recreational Flow and Replenishment Flow.

Estimated Unaccounted Difference

The forecast of the volume of water (usually between two points on a Stream) which will be lost to the system due to Evaporation, Absorption, Unlawful Extraction or other actions or situations which are not directly known.

Estuary

The waters between the mouth of a river and the coastal waters of the State.

Evaporation Reduction

The amount by which Carryover may be reduced, usually determined on a time period basis. For example, any unused Carryover not taken within the first three months of the Water Year may be reduced by X%.

Extraction component

The Extraction Component is defined in 56 (4A,1b) of the Act. I.e. to take water at specified times, at specified rates or in specified circumstances, or in any combination of these, and in specified areas or from specified locations.
The extraction component of an access licence may authorise the taking of water from a water source specified in the share component of the licence and from another water source not so specified if those water sources are vertically abutting (either wholly or partly) water sources. Thus whether the Extraction Component can be drawn depends entirely on the rate of flow of the stream at the time of pumping.

Extraction limit

The long-term average annual recharge and storage that can be extracted from the water source by all access licences.

Extraction management unit

A group of water sources for the purpose of managing annual average extraction.

Farm dam

A privately owned dam typically of earthen construction designed to collect and/or store water for use on one or a few properties. It does not include publicly owned dams or weirs. See also in-river dam and runoff harvesting dam.

Floodplain harvesting

The collection or capture of water flowing across floodplains.

Flow classes

Categorised by the size and duration of flow levels in unregulated rivers. For example:

  1. very low flows may be a class on their own,
  2. low flows may be categorised as ‘A’ class,
  3. moderate flows may be categorised as ‘B’ class,
  4. high flows may be categorised as ‘C’ class,
  5. very high flows may be categorised as ‘D’ class, and
  6. extremely high flows may be categorised as ‘E’ class.

Flow gauging station

A device used to measure the height of a river, from which the flow in the river can be calculated.

Flow Meter

A Primary Meter which is driven by a physical flow of water through the device to measure customer water extraction.

Gauging Station

A device located within a Stream or Off-take which measures the depth of water and / or rate of flow at that point.

General Security

A form of Entitlement, hence Allocation, pertaining to a Regulated Stream for which Water Orders are accepted subject to storage / demand circumstances. See also High Security.

Groundwater

Water under the surface of the ground surface in the saturated zone, whatever may be the geological structure in which it is standing or moving.

Groundwater dependent ecosystems

Ecosystems which have their species composition and natural ecological processes wholly or partially determined by Groundwater.

Groundwater Makeup Allocation

See Conjunctive Use: the volume by which the Regulated Surface Water Allocation may be supplemented by an additional Groundwater Allocation.

Groundwater Management Area

A geographical extent of land which relates directly to an Aquifer.

Groundwater Property Allocation

This is the water allocation announcement for groundwater licences. Allocation is based upon the Property Account entity, which is one or many associated groundwater licences.

Groundwater Property Minimum Allocation

A Groundwater Property Minimum Allocation may be defined. Property Allocations greater than the minimum are subject to any Percentage Reduction down to the Minimum Allocation but Property Allocations equal to or less than the minimum will not be subject to any Percentage Reduction.

Groundwater Zone

A portion of a Groundwater Management Area.

Harvestable Rights

The rights conferred on a landholder by a harvestable rights order described in Section 54 WMA 2000.

Headwater Storage

The primary source of water for a Regulated Stream. Usually refers to a Dam but may be a Weir or an Off-take.

High Security

A form of Entitlement, hence Allocation, pertaining to a Regulated Stream for which the supply of water is guaranteed irrespective of circumstances. Usually applies to Town water Supplies and Irrigation of permanently established crops such as orchards. See also General Security.

Holder

The person whose name appears on a water licence is known as the Licence Holder.

Hold Transaction volume

Definition to come – Lachlan specific

Hold sub-account balance

Definition to come – Lachlan specific

Holding

The amount of water (expressed in ML) that a particular licence holder is entitled to from a jointly held Access Licence.

HYDSYS

A computer system which takes water depth / flow readings from Gauging Stations – usually but not necessarily through telemetry. This is the corporate version of the system which will be amended to incorporate CAIRO: HYDSYS Rating Tables.

Implementation Program

An Implementation Program established by the Minister under section 51 of the Act to implement this Plan.

Individual daily extraction limit (IDEL)

The volume of water that may be extracted, by an individual access licence, from an unregulated river, on a daily basis from a particular flow class.

Infrastructure

Infrastructure includes, but is not limited to,

  1. a flow gauging device or any other appliance that is used to measure the height of a river relative to a known datum point, from which the flow in the river can be calculated, or
  2. a flow announcement system which is the mechanism by which the Minister communicates daily flow classes to the holders of an access licence within this water source.

Initial Allocation Announcement

See Allocation Announcement. This is the basis upon which Water Allocation is calculated at the beginning of each Water Year. It is expressed as a percentage of Entitlement. See also Supplementary Announcement.

Irrigation Corporation

An irrigation corporation referred to in Part 1 of Chapter 4, WMA 2000.

IPART

Independent Pricing and Regulatory Tribunal of New South Wales, required by the Independent Pricing and Regulatory Tribunal Act 1992 to determine maximum prices to be charged for bulk water services from year to year.

iWAS

Internet Water Accounting System. Established to allow customers to order water and enter meter readings via the internet to enable self management of Water Management Act 2000 water accounts.

Lag

The number of days between water release from a dam and its availability in a given water section. See Also: Stream Lag

Licence Category

Purpose of a licence – general security, high security irrigation, domestic and stock.

Licence Condition

A limitation placed upon a Licence which is an input to when and for what purposes water may be extracted.

Licence Holder

Person or company who holds the rights granted by way of a licence. The holder may gain the rights by being in occupation of the lands on which the licence authorises works to be constructed and used. They might not be the owner of those lands.

Licence Holder Address

The address of the holder for service of notices. Does not necessarily represent the location of the water access.

Licence Status

Whether the Licence is Current or has been Suspended, Cancelled Surrendered, or has Expired.

Licensed Work

The infrastructure by which means water may be extracted as described in the Licence. Strictly speaking, it refers to all Pumps, Meters, Pipes, Levees, Channels, Storages etc associated with the extraction of water at a location. However, for Licensing purposes, it generally refers to the Pump(s) and for Metering purposes it generally refers to the Primary and Alternate Meter(s). Identical to Work below.

Linked WMA 2000 Licence

An access licence that can be used via licenced works. Numerous access licences can be linked to one works approval.

Local Water Utility

Either a water supply authority established by WMA 2000, or a council or county council exercising water supply functions under Division 2 of Part 3 of Chapter 6 of the Local Government Act 1993.

Local Water Utility Licence

A category of licence issued for town water supplies.

Long-term average annual extraction

The average of annual extractions from the water source over the period for which an assessment is carried out.

Major Utility

A person or body referred to in Schedule 2 of WMA 2000.

Management Committee

A committee referred to in Section 12 of WMA 2000. These committees are known as Customer Service Committees.

Management zone

An area within the water source to which daily extraction limits are defined. Management zones are designated only where the water source to which the plan applies is divided into areas and daily extraction limits are defined for each area.

Meter Alias

A name assigned to a meter which is easily identifiable by the irrigator when determining customer meter readings. Customer Field Officers have attached blue signs to each of the meters that identify the meter.

Metering District

A Section of a Stream or a Groundwater Zone that is the responsibility of a particular authorised officer of State Water. On a Regulated Stream, it often correlates to a Stream Section.

Minister

The Minister for Environment, Climate Change and Water. The Minister may delegate his functions under section 389 of the Act.

Monitoring bore

A bore constructed for the purpose of measuring water levels and/or taking samples for water quality analysis.

Murray Darling Basin Agreement

The agreement between the Commonwealth of Australia and the states of New South Wales, Victoria and South Australia as referred to in the Murray Darling Basin Act, 1992, for the purpose of promoting and co-ordinating effective planning and management for the equitable efficient and sustainable use of the water, land and other environmental resources of the Murray-Darling Basin.

Murrumbidgee Irrigation (Conveyance) Licence

Licence negotiated for Murrumbidgee Irrigation.

Off Allocation

The declaration of an event during which water may be extracted from a Regulated Stream up to prescribed limits and subject to conditions but where the volume extracted is not deducted from remaining Allocations. This is now referred to as Supplementary flow events.

Off-take

A controllable device usually located within a Weir or a Channel which allows water to be diverted to a stream other than the main Water Course, or to a storage area.

On Allocation

See Off Allocation above: On Allocation is the normal operation condition where water extracted is deducted from Allocation.

On-farm storage

A privately owned water holding structure in which water taken from one of these water sources is often held for later use.

Overdraw

The excess over an Allocation which, under certain circumstances and subject to conditions, may be taken in advance of the following Water Year.

Over pumping

Usage is apportioned on a daily basis according to orders. Over pumping represents the usage over and above the reconciled orders.

Period of Grace

The time period after the issuing of the periodical Invoice for Water Access and Usage Charges during which penalty interest charges are not incurred on outstanding payments.

Permanent Transfer

The transfer of whole or part of the Allocation of an Entitlement under Division 4C of the Act, such transfer being without limitation as to duration.

Piezometric surface (potentiometric surface)

A surface that represents the level to which water will rise in cased bores. (The water table is the potentiometric surface of an unconfined aquifer).

Primary Meter

The primary means by which actual water extracted through a Licensed Work is calculated. It usually – but not necessarily – takes the form of a Flow Meter.

Prior WA 1912 Licence

Refers to the licence issued under the Water Act 1912 and converted to the Water Management Act 2000. Formerly XXSA or XXSL type licences converted to XXAL.

Property Account

The primary reference for a group of Associated Groundwater Licences.

Pseudo Accounts

Water Allocation Management Accounts which are set up to assist in the management of Environmental/Recreational/Replenishment Flows. They are also used within the Border Rivers Valley to manage Bulk Water Orders by Queensland Irrigators.

Pump

The mechanical device which actually extracts the water from its source. It is described on the Licence as the maximum size / capacity for that Licensed Work but this description is not necessarily what is physically installed at the Work.

Rating Tables

See also SCADA, HYDSYS and CAIRO: HYDSYS: these are tables which translate data such as Pond Depth, Flow Rate, etc into volumes of water. They are used extensively within the River Operations Function.

Recharge

The addition of water, usually by infiltration, to an aquifer.

Reconciled orders

Water orders that have been accounted for based on a meter reading.

Recovery depths

See contoured draw-down.

Recreational Flow

A volume of water released from the Head work for recreational purposes, such as canoing. This is an important input to the River Operations Function. See also Environmental Flow and Replenishment Flow.

Regulated River

A river that is declared by the Minister, by order published in the Gazette, to be a regulated river.

Regulated General Security Licence

A Licence pertaining to a Regulated Stream for which Water Orders are accepted subject to storage / demand circumstances.

Regulated High Security Licence

A Licence pertaining to a Regulated Stream for which the supply of water is guaranteed irrespective of circumstances. Usually applies to Town water Supplies and Irrigation of permanently established crops such as orchards.

Regulated Stream

A River, Stream or other Water Course, the flow of which is regulated by artificial structures such as Dams, Weirs, Off-takes, Storages, etc.

Regulated Supplementary Licence

Holders of supplementary access licences are able to extract water during announced periods when flows exceed those required to meet other licensed obligations and environmental needs. This is typically during periods when the dam is spilling or as a result of high tributary inflows downstream of the dam. Replaces access to ‘off-allocation’ water and access under Special Additional Licences and High Flow Authorities.

Regulated Water

A River, Stream or other watercourse, the flow of which is regulated by artificial structures such as Dams, Weirs, Off-takes, Storages, etc.

Replenishment flows

A volume of water released from the Head work to replenish downstream Storages and Weirs, and to refill pools and water holes in effluent river systems downstream of the water source. Provides water for households, town use and stock. This is an important input to the River Operations Function. See also Environmental Flow and Recreational Flow.

Revocation (of Authority)

A Licence, Authority, Permit etc may be revoked under certain circumstances. A Revoked Licence will not be restored.

Riparian Rights

Occupants of land which abuts a river bank hold certain rights as defined in the Water Act 1912 in respect of the extraction of water for defined purposes (stock and domestic) without the need for a Licence and not subject to usage fees.

River Operations

The procedures under which the volume of water in a stream and its rate of flow is regulated. Applies to both regulated and unregulated streams although the operational procedures are quite different.

River Section

A portion of a (usually) Regulated Stream which is controlled by artificial means, such as between two Weirs for instance. It often – but not necessarily – correlates to a Metering Section. It is a fundamental entity within River Operations. Also referred to as Stream Section.

Runoff harvesting dam

A farm dam on a hillside or 1st or 2nd order stream which collects and stores rainfall runoff. 1st and 2nd order streams are as defined by the order made under section 5 of the Water Act 1912 in relation to the definition of a river gazetted 23rd March 2001. See also Farm dam and In-river dam. Note: This order refers to watercourses shown as blue lines on topographic maps. The lines which are uppermost in a catchment are 1st order streams, when two 1st order streams are joined they make a 2nd order stream, etc. For more information see the Farm Dams Assessment Guide available at www.dwe.nsw.gov.au.

SCADA

A system which permits remote operation of regulatory devices along the extent of a stream.

Share Component

The Share Component of the access licence is the volume share of water made available in a water source. It is similar to the entitlement volume on previous water licences. The amount of water a licence holder is allocated in any year as a result of an available water determination is based on their share component. Other rules, such as Carryover, are also based on the share component. The share component of an access licence is defined in 56(1) of the Act.

Significant Meter

Where a Primary Meter or an Alternate Meter is a three phase Electricity Meter (thereby actually consisting of three Meters – one for each phase), one of the three Meters is selected and consistently used as the Significant Meter and the other two are used as BackUp Meters (Alternate Meters) in the event of failure of the Significant Meter.

Stock watering

The watering of stock being raised on the land. Does not include the use of water in connection with intensive animal husbandry.

Stream

Also variously referred to as River; or Water Course. It is the path of the main flow of surface water along its extent.

Stream Lag

The number of days between water release from a weir and its availability in a given water section. In the WOU software Stream Lag is a number in the range 0 to 30 inclusive.

Stream Order

The physical sequence of Licensed Works along a Stream. Stream Orders are unique for a licence and catchment code and are in increasing order from the most upstream. This is an important piece of information for authorised officers of State Water to enable them to plan their activities.

Stream Section (River Section)

A portion of a (usually) Regulated Stream which is controlled by artificial means, such as between two Weirs for instance. It often – but not necessarily – correlates to a Metering Section. It is a fundamental entity within River Operations. Also referred to as River Section.

Supplementary Allocation Licence

The Supplementary Allocation Licence (SAL) is provided in the Water Sharing Plan and provides for water taken during supplementary events. You can’t apply for an SAL, and if you don’t have one, any water you take during a supplementary event will be deducted from your Usage Approval.

Supplementary Announcement

See Allocation Announcement. This is the basis upon which the Initial Water Allocation Announcement at the beginning of the Water Year is supplemented by additional Announcements during the Water Year.

Supplementary Event

A Supplementary Event is an event that temporarily changes water regulation and use in one or more sections of a stream. Supplementary Events include flooding (the most common supplementary event), tributary inflows and increases in flow due to spillage of storage. If a Supplementary Event occurs it may be declared for a period of days over one or more sections. When licence holders take water under these circumstances it is deducted from their Supplementary Access Licence (SAL) account. They are charged for the volume they pump, but their allocation is not affected.

Supplementary Water Access Licence

Holders of supplementary access licences are able to extract water during announced periods when flows exceed those required to meet other licensed obligations and environmental needs. This is typically during periods when the dam is spilling or as a result of high tributary inflows downstream of the dam. Replaces access to ‘off-allocation’ water and access under Special Additional Licences and High Flow Authorities.

Supplementary Water Account

Similar to the water account but only applicable to supplementary licenses (off allocation water). High Security licences, Domestic & Stock licences, and Local Water Utility licences do not have access to Supplementary water.

Supply capability

The rate at which water can be supplied to a section of a water source after satisfying the environmental water provisions and the requirements for water to satisfy basic landholder rights.

Suspension (of Authority)

The Water Act 1912 makes provision for a Licence, Authority, and Permit etc to be suspended under certain circumstances. A Suspended Licence may be restored when the condition leading to its suspension is corrected.

Under the Water Management Act 2000, State Water can suspend a works approval or access licence based on non payment of water charges, pumping without orders or meter tampering. Strict penalties apply.

Significant Meter

Where a Primary Meter or an Alternate Meter is a three phase Electricity Meter (thereby actually consisting of three Meters – one for each phase), one of the three Meters is selected and consistently used as the Significant Meter and the other two are used as Backup Meters (Alternate Meters) in the event of failure of the Significant Meter.

Sleeper Licence

A Sleeper Licence is one which uses none of its Allocation over the course of the Water Year. See also Dozer Licence.

State Water

The organisation responsible for the delivery of bulk water throughout the state. It includes the Head Office function of State Water as well as the distributed Operational functions, based at regional and district offices as well as at the major dam sites.

Standard allocation sub-account volume

This field outlines the amounts by which the available allocation account is credited or debited.

Standard allocation sub-account balance

The field of your customer water account statement that tracks the changes in the Available Allocation water balance as transactions occur on the account.

Take Transaction volume

Accounting rule for the Lachlan. Further definition required

Take sub-account balance

Accounting rule for the Lachlan. Further definition required

Telemetry

See also SCADA. Telemetry is a process that allows remote readings of gauges, meters and the like through the use of telecommunications or radio communications between a central site and the device being accessed.

Temporary Transfer

The transfer of whole or part of the Allocation of an Entitlement under Division 4C of the Water Act, such transfer being in place for a limited duration after which the Allocation reverts to the transferor.

Three Year Use Limit

This is the maximum Three Year rolling Usage allowable for the Access Licence. It is expressed as a percentage of the Annual Share Component for the Access Licence.

Time and Event Meters

Primary Meters which record Time and Date water is taken, as well as the volume taken. Can usually be read remotely through telemetry.

Total daily extraction limit (TDEL)

The volume of water that may be extracted under access licences from an unregulated river on a daily basis from a particular flow class.

Transparent releases

All dam inflows are released coincidentally with their occurrence.

Translucent releases

Some portion of dam inflows are released coincidentally with their occurrence.

Unconsolidated alluvial aquifers

Aquifers formed by sediment deposited by the action of flowing water in particular along river beds and floodplains, but not including lakes and seas.

Uncontrolled Flow (UCF)

Water flowing in a regulated stream which, by virtue of the fact that it is ‘spilled from storage’ or that it has come from tributary inflow, is not able to be controlled. These flows occur at a particular location when the stream flow at that location is greater than that required to meet the environmental needs and consumptive orders from that location to the end of the regulated water source.

UCF transaction volume

Definition required

Uncontrolled Flow Usage Limit

This is the maximum limit of Uncontrolled Flow water that can be taken by an Access Licence. It is defined as a percentage of the Annual Share Component.

Unreconciled Orders

Water orders are reconciled once a meter reading has been entered into the Water Accounting System. Unreconciled orders are those orders that have not yet been reconciled by a meter reading.

Unregulated River

A river that is not controlled by releases from a dam or regulated via the use of weirs and gated structures.

Unregulated Stream

A River, Stream or other Water Course, the flow of which is not regulated by artificial structures such as Dams, Weirs, Off-takes, Storages, etc.

Unregulated Water

A River, Stream or other watercourse, the flow of which is not regulated by artificial structures such as Dams, Weirs, Off-takes, Storages, etc.

Usage Apportioning

Apportioning of Usage for Work Approvals to Access Licences, as defined in the Order of Business Rules.

Usage Charge

IPART determine the periodic pricing regime on a three tiered basis.

  • The Base Charge is a flat rate $.cc charge applied on a per Licence or per Property Account basis
  • The Entitlement Charge (or Fixed Charge) is based on a $.cc charge per ML of Entitlement
  • The Usage Charge is based on a $.cc charge per ML of Water Taken

The application of the IPART Pricing Requirements is controlled within each Valley by the Business Information Function.

Usage Purpose

A factor in Water Allocation Management – see below. Allocation remaining for a Licence may take a number of forms, such as Supplementary Water, High Security, General Security, Carryover, Temporary Transfer In, etc and may need to be accounted for separately. Each of these forms is a Usage Purpose.

Use Approval

An approval referred to in Section 89 of WMA 2000. A water use approval confers a right on its holder to use water for a particular purpose at a particular location.

Use Limit

The volume of water available for extraction within the water year.

Valley

A geographical expanse containing one or more Streams and which constitutes a distinct and definable unit for management and operational purposes. For example, the Hunter Valley is a part of State Water’s Central Area and contains the Upper Hunter River, Glennies Creek and the Lower Hunter River.

Water Access and Usage Charge

A broad term covering Entitlement, Water Taken, Area Under Irrigation, Purpose of Access, etc which forms the basis of Customer Billing according to rules laid down by the Independent Pricing and Regulatory Tribunal of New South Wales (IPART) from time to time.

Water Account

A Water Account is a ledger of all transactions relating to Water Allocations for an Access Licence. Previously referred to as the Allocation Statement, the Water Account records Allocation Announcements, Water Ordered, Water Taken, Carryover, and so on. The statement includes all access licences linked to a combined use and Work Approval.

Water accounting year

Any 12 month period commencing on 1 July.

Water Allocation

The volumetric quantity of water that can actually be taken during any year, consequent to Water Allocation Announcement(s). It is defined in Division 4B of the Act.

Water Allocation Account

Also referred to as Allocation Account. The ledger in which Allocation Announcements, Water Ordered, Water Taken, Carryover, Off Allocation and so on are recorded for each Licence. Each of these categories is referred to as a Water Allocation Sub-account.

Water Allocation Balance

The volumetric quantity of water that remains available to be taken during the Water Year, on a per Licence basis, after water already ordered and / or taken has been taken into consideration.

Water Management Area

An area of land that is constituted as a water management area by an order in force under Section 11 of WMA 2000.

Water management principles

Water management principles referred to in Section 5 of WMA 2000.

Water management work

A water supply work, a drainage work or a flood work.

Water management work approval

A water supply work approval, a drainage work approval or a flood work approval.

Water Order

The requisitioning of water in accordance with the terms specified in the Licence Conditions applicable to the Licence under Water Management Act 2000 and Water Act 1912.

Water Order Debiting

A process designed to discourage over-ordering of water wherein every Water Order will, as far as possible, be matched against a corresponding Meter Reading (Usage) and the following basic rules applied.

  • If the Order and the Usage are approximately equal, then the Usage is debited to the Allocation Account
  • If the Usage is more than the Order, then the Usage is debited to the Allocation Account
  • If the Usage is moderately less than what was ordered (within X% - say 10%), the Usage is debited to the Allocation Account. Note that X% can be 0%, giving no tolerance
  • If the Usage is significantly less than what was ordered (greater than X%), the Order is debited to the Allocation Account.

In every case, all Usage Fees are applied to Usage.

Water Sharing Plan

A statutory document that establishes the rules for sharing water between the environment and water users, and between competing water users.

Water Source

Any river, lake or estuary, or any place where water occurs naturally on or below the surface of the ground, and includes the coastal waters of the State.

Water storage

A State owned dam, weir or other structure which is used to regulate and manage river flows in this water source and the water bodies impounded by these structures.

Water Supply Authority

A water supply authority referred to in Schedule 3 of WMA 2000.

Water supply system

Includes the water storages and all other factors influencing water supply that are under the control of the Minister.

Water supply work

Any water pump, water bore or other construction that is used for the purpose of taking water from a water source, or any tank, dam, pipe, channel or other construction that is used for capturing, storing, diverting or impounding water.

Water Supply Work Approval

An approval referred to in Section 90 of WMA 2000. A water supply work approval permits water supply works (pumps, dams) to be built and operated at specified locations.

Water table

The upper surface of an unconfined aquifer.

Water Trading

The process in buying and selling Entitlements (Permanent Transfers) and / or Allocations (Temporary Transfers) with the intention not of extraction but for profit.

Water Usage

The determination of the volume of water actually taken from the water source over any period of time.

Water use approval

An approval referred to in Section 89 of WMA 2000.

Water use development

Includes all privately owned water management structures, and all aspects of farm, industry, town or private household development which affect the volumes of water taken from water sources, and the management practices that are applied in relation to them.

Water Year

The water year is the 12 months running from 1 July to 30 June.

WMA 2000

The Water Management Act 2000.

Work Approval

An approval referred to in Section 90 of WMA 2000. A water supply work approval permits water supply works (pumps, dams) to be built and operated at specified locations. Works The infrastructure by which water may be extracted as described in the Licence. Strictly speaking, it refers to all Pumps, Meters, Pipes, Levees, Channels, Storages etc associated with the extraction of water at a location. However, for Licensing purposes, it generally refers to the Pump(s) whereas for Metering purposes it generally refers to the Primary and Alternate Meter(s).

63.6
Friday 21 September
-0.8
1,642,610 ML
2,581,850 ML
11,685 ML
1,670 ML
-12,556 ML
Friday 21 September