Murray–Darling Basin
37.1 Surface water allocation trade within region

Supporting information
Quantification approach

Supporting information

The line item includes information on water allocation trade within the Murray–Darling Basin (MDB) region. The volumetric values for the line item for the 2012–13 year were 5,985,629 ML for the whole MDB region.

The following two tables provide a summary and breakdown information on allocation trade within the region.

Summary of water allocation trade in the MDB region during the 2012–13 year
Surface Water Resource Plan (WRP) area		State/Territory	Volume (ML)
Code	Name	State/Territory	Purchased to the WRP area	Sold from the WRP area
SW20	Warrego–Paroo–Nebine	Qld	440	440
SW19	Condamine–Balonne	Qld	9998	9998
SW18	Moonie	Qld	0	0
SW17	Qld Border Rivers	Qld	107,007	84,680
SW16	NSW Border Rivers	NSW	20,462	42,789
SW12	Barwon–Darling Watercourse	NSW	0	0
SW13	NSW Intersecting Streams	NSW	0	0
SW15	Gwydir	NSW	88,774	88,774
SW14	Namoi	NSW	42,380	42,380
SW11	Macquarie–Castlereagh	NSW	296,862	296,862
Sub-total Northern Basin			565,923	565,923
SW10	Lachlan	NSW	277,562	277,562
SW9	Murrumbidgee NSW	NSW	897,506	952,655
SW8	NSW Murray and Lower Darling	NSW	1,414,040	1,638,768
SW3	Northern Victoria	Vic.	766,851	758,464
SW2	Vic. Murray	Vic.	828,780	1,482,359
SW4	Wimmera–Mallee	Vic.	0	0
SW5 and SW7	SA Murray Region and Eastern Mount Lofty Ranges	SA	n/a	n/a
SW6	SA River Murray	SA	1,234,967	309,898
SW1	ACT	ACT	n/a	n/a
Sub-total Southern Basin			5,419,706	5,419,706
Total for the region			5,985,629	5,985,629

Details of water allocation trade in the MDB region during the 2012–13 year
WRP area	SDL area		State	Entitlement class	Volume (ML) for the 2012–13 year
WRP area	Code	Name	State	Entitlement class	Purchased to the Sustainable diversion limit area	Sold from the Sustainable diversion limit area
SW20 Warrego–Paroo–Nebine	SS28	Warrego	Qld	supplemented	440	440
SW19 Condamine–Balonne	SS26	Condamine–Balonne	Qld	supplemented	9,998	9,998
SW17 Qld Border Rivers	SS24	Qld Border Rivers	Qld	supplemented and unsupplemented	107,007	84,680
*Sub-total Queensland*					*117,445*	*95,118*
SW16 NSW Border Rivers	SS23	NSW Border Rivers	NSW	high security	0	1,175
				general security	14,743	35,708
				supplementary	5,719	5,906
				*Sub-total*	*20,462*	*42,789*
SW15 Gwydir	SS22	Gwydir	NSW	high security	30	4,970
				local water utility	5	0
				general security	78,666	73,731
				supplementary	10,073	10,073
				*Sub-total*	*88,774*	*88,774*
SW14 Namoi	SS21	Namoi	NSW	high security	30	3,039
				general security	42,150	39,141
				supplementary	200	200
				*Sub-total*	*42,380*	*42,380*
SW11 Macquarie–Castlereagh	SS20	Macquarie–Castlereagh	NSW	high security	592	5,825
				general security	296,270	291,037
				supplementary	0	0
				*Sub-total*	*296,862*	*296,862*
SW10 Lachlan	SS16	Lachlan	NSW	high security	153,771	45,055
				general security	123,791	232,494
				stock and domestic	0	13
				*Sub-total*	*277,562*	*277,562*
SW9 Murrumbidgee NSW	SS15	Murrumbidgee NSW	NSW	high and general security and irrigation	844,232	870,454
				supplementary	40,874	41,874
				conveyance	12,400	40,327
				*Sub-total*	*897,506*	*952,655*
SW8 NSW Murray and Lower Darling	SS18	Lower Darling	NSW	high security	996	3,396
				stock and domestic	0	0
				general security	84,348	83,584
				*Sub-total*	*85,344*	*86,980*
	SS14	NSW Murray	NSW	high and general security and irrigation	1,286,318	1,521,145
				stock and domestic	0	0
				local water utility	0	1,415
				supplementary	2,059	1,059
				conveyance	40,319	28,169
				*Sub-total*	*1,328,696*	*1,551,788*
*Sub-total New South Wales*					*3,037,586*	*3,339,790*
SW3 Northern Victoria	SS4	Ovens	Vic.	combined high and low reliability	897	897
	SS5	Broken	Vic.	combined high and low reliability	211	211
	SS6	Goulburn	Vic.	combined high and low reliability	730,467	695,321
	SS7	Campaspe	Vic.	combined high and low reliability	20,350	46,011
	SS8	Loddon	Vic.	combined high and low reliability	14,926	16,024
SW2 Vic. Murray	SS2	Vic. Murray	Vic.	combined high and low reliability	828,780	1,482,359
*Sub-total Victoria*					*1,595,631*	*2,240,823*
SW6 SA River Murray	SS11	SA Murray	SA	class 2--other urban (country town) water supply	0	10,570
SW6 SA River Murray	SS11	SA Murray	SA	combined classes metered	1,234,967	299,328
Sub-total South Australia					1,234,967	309,898
Total for the region					5,985,629	5,985,629

The volumes provided in the above table were based on data available at the sources (see 'Data source'). All intra-organisational trading in New South Wales Murray and Murrumbidgee New South Wales water resource plan (WRP) areas have been accounted under general security entitlement class. Therefore the volume for this entitlement class could be overestimated and the volume for high secuirty entitlment class could be underestimated.

In the above table, purchase volumes include water purchased internally and from outside sources for a reporting unit. Sold volumes include water sold internally and to outside areas from a reporting unit. Allocation trade volumes including environmental water trade and transferred volumes due to tagging of entitlements are included in the values provided in this note.

Allocation trade during the 2012-13 year resulted in net inward movement of water for some states and net outward movement for the others as shown in the following table.

Net inter-state allocation trade for the states within the region during 2012–13 year
From	To	Net allocation trade (ML)
New South Wales	Queensland	22,327
New South Wales	South Australia	388,041
Victoria	New South Wales	108,164
Victoria	South Australia	537,028

More details of inter-state trade are available in Water market activity region note.

Quantification approach

Data source

(1) New South Wales Office of Water: water accounting section; (2) National Water Commission: internal database for 2012–13 water trading data; and (3) Murray–Darling Basin Authority: water audit monitoring (WAM) data received from Queensland (5 February 2014), South Australia (17 March 2014), and Victoria (14 February 2014), and stored in the HYDRO database.

Provided by

Bureau of Meteorology.

Method

WAM and NSW Office of Water's water trading data were obtained from water trade registers. Intra-valley trading volumes for NSW Murray, Murrumbidgee NSW, and SA Murray were extracted from the National Water Commission's internal database for 2012–13 water trading data.

Assumptions, limitations, caveats and approximations

The Warrego sustanable diversion limit area in Queensland is predominantly unsupplemented but contains the supplemented Cunnamulla water supply scheme. All the allocation trade within the Warrego region is assumed to be within Cunnamulla water supply scheme.

For New South Wales data, the New South Wales Government does not guarantee that water information data are current nor does it guarantee that the data or the data capturing processes are free from corruption or error. Data provided at this site are preliminary and the department's quality assurance procedures may be incomplete. The department cannot warrant and does not represent that the material that appears on its website or any linked websites is complete, current, reliable and/or free from error.

Uncertainty information

The uncertainty estimate was not quantified.

Murray–Darling Basin 37.1 Surface water allocation trade within region