Murray–Darling Basin
37.1 Surface water allocation trade within region

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 2011–12 year were 4,104,354 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 2011–12 year
Surface Water Resource Plan (WRP) area

State/Territory

 Volume (ML) 

Code

Name

Purchased to the WRP area

Sold from the WRP area

SW19 Warrego–Paroo–Nebine Qld

520

520

SW18 Condamine–Balonne Qld

7,424

7,424

SW17 Moonie Qld

0

0

SW16 Qld Border Rivers Qld

73,914

47,802

SW15 NSW Border Rivers NSW

7,226

33,338

SW11 Barwon–Darling Watercourse NSW

0

0

SW12 NSW Intersecting Streams NSW

0

0

SW14 Gwydir NSW

36,272

36,272

SW13 Namoi NSW

24,280

24,281

SW10 Macquarie–Castlereagh NSW

202,302

202,302

Sub-total Northern Basin

351,939

351,939

SW9 Lachlan NSW

131,200

131,200

SW8 Murrumbidgee NSW NSW

673,593

740,411

SW7 NSW Murray and Lower Darling NSW

1,083,855

1,063,162

SW3 Northern Victoria Vic.

447,628

427,533

SW2 Vic. Murray Vic.

693,402

945,177

SW4 Wimmera–Mallee  Vic.

0

0

SW6 Eastern Mount Lofty Ranges SA

n/a

n/a

SW5 SA Murray SA

722,737

444,932

SW1 ACT  ACT

n/a

n/a

Sub-total Southern Basin

3,752,415

3,752,415

Total for the region

4,104,354

4,104,354


Details of water allocation trade in the MDB region during the 2011–12 year

WRP area

Sustainable diversion limit (SDL) area

State

Entitlement Class

 Volume (ML) for the 2011–12 year 

Code

Name

Purchased to the SDL area

Sold from the SDL area

SW19 Warrego–Paroo–Nebine SS28 Warrego Qld Supplemented

520

520

SW18 Condamine–Balonne SS26  Condamine–Balonne  Qld Supplemented

7,424

7,424

SW16 Qld Border Rivers SS24 Qld Border Rivers Qld Unsupplemented

0

0

Supplemented

73,914

47,802

Sub-total

73,914

47,802

 Sub-total Queensland

81,858

55,746

SW15 NSW Border Rivers SS23 NSW Border Rivers  NSW High security

0

1,020

General security

4,255

29,347

Supplementary

2,971

2,971

Sub-total

7,226

33,338

SW14 Gwydir SS22 Gwydir  NSW High security

580

805

Local water utility

12

0

General security

22,457

22,244

Supplementary

13,223

13,223

Sub-total

36,272

36,272

SW13 Namoi  SS21 Namoi  NSW High security

0

3,040

General security

23,134

20,094

Supplementary

1,147

1,147

Sub-total

24,281

24,281

SW10 Macquarie–Castlereagh SS20 Macquarie–Castlereagh  NSW High security

294

8,682

General security

201,612

193,224

Supplementary

396

396

Sub-total

202,302

202,302

SW9 Lachlan  SS16 Lachlan  NSW High security

63,596

26,119

General security

67,605

105,081

Sub-total

131,200

131,200

SW8 Murrumbidgee NSW SS15 Murrumbidgee NSW NSW High security

9,394

24,050

General security

647,799

623,961

Supplementary

16,400

16,400

Conveyance

0

76,000

Sub-total

673,593

740,411

SW7 NSW Murray and Lower Darling SS18 Lower Darling NSW High security

1,508

4,442

Stock and domestic

2

0

General security

77,929

55,493

Sub-total

79,439

59,935

SS14 NSW Murray NSW High security

58,254

101,914

Stock and domestic

32

0

Local water utility

0

152

General security

836,874

879,624

Supplementary

505

505

Conveyance

108,750

21,033

Sub-total

1,004,415

1,003,227

 Sub-total New South Wales

2,158,729

2,230,966

SW3 Northern Victoria  SS4 Ovens Vic. Combined high and low reliability

93

93

SS5 Broken Vic. Combined high and low reliability

23

23

SS6 Goulburn Vic. Combined high and low reliability

316,986

321,873

SS7 Campaspe Vic. Combined high and low reliability

65,942

56,628

SS8 Loddon Vic. Combined high and low reliability

64,584

48,916

SW2 Vic. Murray SS2 Vic. Murray Vic. Combined high and low reliability

693,402

945,177

 Sub-total Victoria

1,141,030

1,372,711

SW5 SA Murray SS11 SA Murray SA Class 2 – other urban (country town) water supply

0

14,000

Combined classes metered

722,737

430,932

 Sub-total South Australia

722,737

444,932

Total for the region

4,104,354

4,104,354


The volumes provided in the above table were based on data available at the sources (see 'Data source'). It is believed that the allocation trade volumes provided in this line item for Northern Victoria and Victorian Murray WRP areas are an underestimation due to limitations in the data sources. All intra-organisational trading in New South Wales Murray and Murrumbidgee New South Wales 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 2011-12 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 2011–12 year
From

To

Net allocation trade (ML)

New South Wales Queensland 26,112
New South Wales South Australia 97,382
Victoria New South Wales 51,257
Victoria South Australia 180,423

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

Total volume of allocation trade reported in the 2011 Account for the 2010–11 year was 2,728,197 ML (purchased to SDL areas) and 2,707,561 ML (sold from SDL areas). The volume was based on available information for the 2011 Account.  Particularly information was not available for intra-organisational trading in New South Wales. National Water Commission (2011) sources show that total allocation trade volume in the Basin as 3,385,000 ML for the 2010–11 year.

Quantification approach

Data source

(1) New South Wales Office of Water: water accounting section; (2) National Water Commission: Australian Water Markets Report 2011–12 (National Water Commission 2013); and (3) Murray–Darling Basin Authority: water audit monitoring (WAM) data received from Queensland (4 February 2013), South Australia (15 March 2013) and Victoria (21 March 2013), and stored in the HYDRO database.

Provided by

Bureau of Meteorology (the Bureau).

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 Australian Water Markets Report 2011–12.

Assumptions, limitations, caveats and approximations

The Warrego SDL 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.