Murray-Darling Basin
17.7 Non-allocated diversions to users

Supporting Information

The volumetric value for the line item for the 2010–11 year was 2,016,782 ML. The line item represents non-allocated diversions, except for urban water systems, in the Murray–Darling Basin (MDB) region. Non-allocated diversions are made under water access entitlements, for which no present commitment (water liability) to deliver water to users was recognised.

The following two tables provide a summary and breakdown information for the line item in the MDB region.


Summary of surface water non-allocated diversions (excluding urban water systems) in the MDB region during the 2010–11 year
Surface water resource plan area State

 Volume (ML) for the 2010–11 year 



SW19 Warrego – Paroo – Nebine Qld 10,615
SW18 Condamine–Balonne Qld 528,382
SW17 Moonie Qld 27,210
SW16 Qld Border Rivers Qld 192,420
SW15 NSW Border Rivers NSW 122,263
SW11 Barwon–Darling watercourse NSW 102,876
SW12 NSW Intersecting Streams NSW 3,309
SW14 Gwydir NSW 181,440
SW13 Namoi NSW 199,803
SW10 Macquarie–Castlereagh NSW 83,224
Sub-total Northern Basin 1,451,542
SW9 Lachlan NSW 15,710
SW8 Murrumbidgee NSW NSW 210,136
SW7 NSW Murray and Lower Darling NSW 330,869
SW3 Northern Victoria Vic 3,762
SW2 Vic Murray Vic 4,250
SW4 Wimmera–Mallee Vic
SW6 Eastern Mount Lofty Ranges SA
SW5 SA Murray SA
Sub-total Southern Basin 565,240
Total for the region 2,016,782

– = Data not available


Details of surface water non-allocated diversions (excluding urban water systems) in the MDB region during the 2010–11 year
Surface water resource plan area

Sustainable diversion limit area


Entitlement class

 Volume (ML) for the 2010–11 year



Warrego – Paroo – Nebine SS29 Paroo Qld Unsupplemented 5
SS28 Warrego Qld Unsupplemented 10,560
SS27 Nebine Qld Unsupplemented 50
Condamine–Balonne SS26  Condamine–Balonne  Qld Unsupplemented 528,382
Moonie SS25 Moonie Qld Unsupplemented 27,210
Qld Border Rivers SS24 Qld Border Rivers Qld Unsupplemented 192,420
Sub-total Queensland 758,627
NSW Border Rivers SS23 NSW Border Rivers  NSW Supplementary 94,176
Unregulated 28,087
Sub-total 122,263
Barwon–Darling watercourse SS19 Barwon–Darling watercourse NSW Unregulated 102,876
NSW Intersecting Streams SS17 NSW Intersecting Streams   Unregulated 3,309
Gwydir SS22 Gwydir  NSW Supplementary 137,440
Unregulated 44,000
Sub-total  181,440
Namoi SS21 Namoi NSW Supplementary 86,803
Unregulated 113,000
Sub-total  199,803
Macquarie–Castlereagh SS20 Macquarie–Castlereagh NSW Supplementary 38,033
Unregulated 45,191
Sub-total  83,224
Lachlan SS16 Lachlan NSW Unregulated 15,710
Murrumbidgee NSW SS15 Murrumbidgee NSW NSW Supplementary 167,762
Unregulated 42,374
Sub-total  210,136
NSW Murray and Lower Darling SS18 Lower Darling NSW Supplementary 132,769
SS14 NSW Murray NSW Supplementary 170,443
Unregulated 27,657
Sub-total  198,100
Sub-total New South Wales 1,249,630
Vic Murray SS3 Kiewa Vic Unregulated 661
Northern Victoria SS4 Ovens Vic Unregulated 368
SS5 Broken Vic Unregulated 54
SS6 Goulburn Vic Unregulated 3,035
SS7 Campaspe Vic Unregulated 85
SS8 Loddon Vic Unregulated 708
Vic Murray SS2 Vic Murray Vic Unregulated 3,101
Sub-total Victoria 8,012
ACT SS1 ACT ACT Unregulated –irrigation 513
Sub-total Australian Capital Territory 513
Total for the region 2,016,782


Further Information for Queensland

Queensland data includes unsupplemented irrigation water allocation with flow conditions, unsupplemented irrigation allocation without flow conditions and unsupplemented water licences diversions. The overland flow take estimation is shown under line item 17.5 Overbank flood spilling.

Further Information for New South Wales

New South Wales data in the previous table includes supplementary diversions in the regulated system and unregulated diversions in the unregulated systems. Although the line item name refers to non-allocated diversions, supplementary diversions are allocated by an available water determination (AWD) following an announcement process as with the other allocated diversions.

New South Wales data includes 5,183 ML of water diverted from the unregulated Fish River within the Macquarie–Castlereagh region to Delta Electricity and Lithgow City Council, (for use outside the MDB region) via the Fish River Water Supply Scheme under a commercial arrangement.

Further Information for Australian Capital Territory

In addition to the Australian Capital Territory volume stated in the above table, Murrumbidgee New South Wales volumes include Australian Capital Territory supplies for which Murrumbidgee New South Wales sustainable diversion limit (SDL) area is the supply source.  


Quantification Approach

Data Source

(1) New South Wales: NSW Office of Water's Water accounting section, and (2) water audit monitoring (WAM) data received from Australian Capital Territory (13 January 2012), New South Wales (2 February 2011), Queensland (22 December 2011) and Victoria (31 January 2012). WAM data are stored in the Murray–Darling Basin Authority HYDRO database.

Provided by

Murray–Darling Basin Authority.


WAM-supplied data were either measured, modelled or estimated.

Assumptions, Limitations, Caveats and Approximations

Uncertainty reported by NSW Office of Water includes possible errors in the data handling processes.

Estimates of uncertainty of the diversions are indicative of the accuracy of bulk diversions only.

A single metered abstraction point may provide water to a range of users under various types of entitlements (e.g. stock and domestic class). When this happens, the jurisdiction may split the metered abstraction into several classes of entitlements or types of users, according to priority rules governing the entitlements. This split has an inherent uncertainty that is not considered here.

Information provided in this line item may have been based on Cap valleys in the HYDRO database which may not align perfectly with SDL areas.

Uncertainty Information

The following tables show the WAM uncertainty definitions and the measurement method applied that relates to the reported uncertainty percentage, and the WAM uncertainty percentage for each entitlement class for each state. 


Uncertainty definitions for WAM data
Uncertainty percentage  

Accuracy Description

5 Metered diversions
10 Estimate based on user meter readings
20 Detailed estimate based on regional surveys
40 Estimate based on user returns


WAM uncertainty percentage for each entitlement class associated with non-allocated diversions for each Jurisdiction

All entitlement classes in following SDL areas

WAM uncertainty (%)

Qld Paroo (includes urban)


Qld Warrego


Qld Nebine


Qld Condamine–Balonne


Qld Moonie System


Qld Border Rivers


NSW Border Rivers


NSW Intersecting Stream


NSW Gwydir


NSW Namoi


NSW Macquarie–Castlereagh


NSW Lachlan


NSW Upper Darling


NSW Lower Darling


NSW Murrumbidgee


NSW Murray


Vic Ovens


Vic Goulburn–Broken


Vic Campaspe


Vic Loddon


Vic Murray


SA SA Murray


ACT All classes


na = not quantified

Comparative year

The value reported as comparative year corresponds to the line items listed in the following table that were reported in the 2010 Account.


Restatement of comparative year information made for the line item 17.7 Non-allocated diversions to users

Northern Basin (ML)

Southern Basin (ML)

Whole region (ML)

Line item names and values reported as at 30 June 2010 in the 2010 Account Diversion of unregulated flows – individual irrigator holder



688,994 Diversion of unregulated flows – other lumped holders




Total value reported for the 2010 Account




Changes in the value reported in the 2010 Account due to regrouping of line items 




Value reported for 30 June 2010 in the 2011 Account 





Changes in the value reported in the 2010 Account were due to regrouping of line items as a result of reclassifying 30 ML diversion in Paroo SDL area under urban water systems.