Murray-Darling Basin
17.7 Non-allocated diversions to users

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
Code	Name
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	–
SW1	ACT	ACT	513
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		State	Entitlement class	Volume (ML) for the 2010–11 year
	Code	Name
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.  

 

(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.

Murray–Darling Basin Authority.

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

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.

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

Jurisdiction	All entitlement classes in following SDL areas	WAM uncertainty (%)
Qld	Paroo (includes urban)	40
Qld	Warrego	40
Qld	Nebine	40
Qld	Condamine–Balonne	28–40
Qld	Moonie System	40
Qld	Border Rivers	9–40
NSW	Border Rivers	36
NSW	Intersecting Stream	40
NSW	Gwydir	40
NSW	Namoi	40
NSW	Macquarie–Castlereagh	38
NSW	Lachlan	40
NSW	Upper Darling	20
NSW	Lower Darling	na
NSW	Murrumbidgee	40
NSW	Murray	40
Vic	Ovens	18
Vic	Goulburn–Broken	5–10
Vic	Campaspe	40
Vic	Loddon	40
Vic	Murray	na
SA	SA Murray	na
ACT	All classes	na

na = not quantified

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

Description		Northern Basin (ML)	Southern Basin (ML)	Whole region (ML)
Line item names and values reported as at 30 June 2010 in the 2010 Account	14.6.5.2 Diversion of unregulated flows – individual irrigator holder	687,570	1,424	688,994
	14.6.5.6 Diversion of unregulated flows – other lumped holders	377,592	151,033	528,625
	Total value reported for the 2010 Account	1,065,162	152,457	1,217,619
Changes in the value reported in the 2010 Account due to regrouping of line items		–30	0	–30
Value reported for 30 June 2010 in the 2011 Account		1,065,132	152,457	1,217,589

 

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.