Murray–Darling Basin
Segments

Water Accounting Statements

Segment water accounting statements

The purpose of this note is to provide water accounting information for two segments: Northern Basin and the Southern Basin of the Murray–Darling Basin (MDB) region. These two segments are shown in Figure 1.  More details of the segments are included in General description, Surface water and Groundwater sections in the 'Contextual information'.

Tables 1–3 provide water accounting statements for the two segments plus consolidated statements for the whole region.

 

Figure 1 Segment boundaries for the Murray–Darling Basin region for the 2013 Account
Figure 1 Segment boundaries for the Murray–Darling Basin region for the 2013 Account


 

Source for the boundaries of the MDB: Australian Government Department of Sustainability, Environment, Water, Population and Communities.

 

Table 1  Statement of Water Assets and Water Liabilities as at 30 June 2013

MDB region

 

Northern Basin

Southern Basin

Whole region

2013
ML

2012
ML

2013
ML

2012
ML

2013
ML

2012
ML

Water assets

 

1 Surface water store

 

1.1 Storages

2,972,416

4,314,709

13,039,374

16,872,487

16,011,790

21,187,196

1.2 Unregulated river

 –

 –

 –

 –

 –

 –

1.3 Regulated river

20,885

16,249

998,377

1,309,763

1,019,262

1,326,012

1.4 Lakes and wetlands

1,799,526

1,811,372

1,799,526

1,811,372

1.5 Inter-region claim on water

0

0

306,397

913,776

306,397

913,776

1.10 Other surface water assets

0

0

20,592

19,952

20,592

19,952

1 Total Surface water store

 

2,993,301

4,330,958

16,164,266

20,927,350

19,157,567

25,258,308

 

2 Groundwater store

 

2.1 Water table aquifer

 –

 –

 –

 –

 –

 –

2.2 Underlying aquifers

 –

 –

 –

 –

 –

 –

2.5 Other groundwater assets

1,537,388

1,548,941

2,655,778

2,464,674

4,193,166

4,013,615

2 Total Groundwater store

 

1,537,388

1,548,941

2,655,778

2,464,674

4,193,166

4,013,615

 

Total water assets

 

4,530,689

5,879,899

18,820,044

23,392,024

23,350,733

29,271,923

 

Water liabilities

 

5 Surface water store

 

5.1 Surface water allocation remaining

1,368,322

2,092,669

2,835,992

5,204,783

4,204,314

7,297,452

5.2 Surface water allocation remaining - urban water system

0

0

0

0

0

0

5 Total Surface water store

 

1,368,322

2,092,669

2,835,992

5,204,783

4,204,314

7,297,452

 

6 Groundwater store

 

6.1 Groundwater allocation remaining

0

0

1,907

2,498

1,907

2,498

6.2 Groundwater allocation remaining - urban water system

0

0

0

0

0

0

6 Total Groundwater store

 

0

0

1,907

2,498

1,907

2,498

 

Total water liabilities

 

1,368,322

2,092,669

2,837,899

5,207,281

4,206,221

7,299,950

 

Net water assets

 

3,162,367

3,787,230

15,982,145

18,184,743

19,144,512

21,971,973

 

Net Water Assets

 

Opening Net Water Assets

3,787,230

2,451,601

18,184,743

14,971,265

21,971,973

17,422,866

Change in Net Water Assets

(624,863)

1,335,629

(2,202,598)

3,213,478

(2,827,461)

4,549,107

Closing net water assets

 

3,162,367

3,787,230

15,982,145

18,184,743

19,144,512

21,971,973

      – = Data not available

 

Table 2 Statement of Changes in Water Assets and Water Liabilities for the year ended 30 June 2013

MDB region

 

Northern Basin

Southern Basin

Whole region

2013
ML

2012
ML

2013
ML

2012
ML

2013
ML

2012
ML

Water asset increases

 

9 Surface water increases

 

9.1 Precipitation on surface water

157,744

247,093

1,002,385

1,401,857

1,160,129

1,648,950

9.2 River inflow to region

0

0

2,156,320

4,547,315

451,000

0

9.4 Runoff to surface water

10,679,507

27,429,924

14,464,367

30,168,072

25,143,874

57,597,996

9.5 Point return from irrigation scheme

0

0

212,773

198,314

212,773

198,314

9.6 Overbank flood return to river channel

 –

 –

 –

 –

 –

 –

9.9 Discharge from urban water system

0

0

31,636

34,325

31,636

34,325

9.10 Direct discharge by user

 –

 –

 –

 –

 –

 –

9.15 Increase of inter-region surface water claim on water

0

0

1,748,700

2,560,022

1,748,700

2,560,022

9 Total surface water increases

 

10,837,251

27,677,017

19,616,181

38,909,905

28,748,112

62,039,607

 

10 Groundwater increases

 

10.1 Groundwater inflow from outside region

0

0

2,646

2,797

2,646

2,797

10.2 Groundwater inflow from outside region at coast

0

0

50

53

50

53

10.3 Recharge from landscape

546,103

254,547

992,995

2,871,380

1,539,098

3,125,927

10.5 Leakage from off-channel water storage

 –

 –

 –

 –

 –

 –

10.6 Leakage from urban water system

 –

 –

 –

 –

 –

 –

10.7 Leakage from irrigation scheme

 –

 –

 –

 –

 –

 –

10.8 Managed aquifer recharge - private user

0

0

631

2,340

631

2,340

10.13 Other groundwater increases

53,825

1,116,554

216,284

1,567,106

270,109

2,683,660

10 Total groundwater increases

 

599,928

1,371,101

1,212,606

4,443,676

1,812,534

5,814,777

Total water asset increases

 

11,437,179

29,048,118

20,828,787

43,353,581

30,560,646

67,854,384

 

Water liability decreases

 

13 Surface water liability decreases

 

13.1 Adjustment and forfeiture of surface water allocation

112,563

163,023

1,894,975

2,052,327

2,007,538

2,215,350

13.2 Adjustment and forfeiture of surface water allocation - urban water system

20,929

30,021

152,510

256,722

173,439

286,743

13 Total surface water liability decreases

 

133,492

193,044

2,047,485

2,309,049

2,180,977

2,502,093

 

14 Groundwater liability decreases

 

14.1 Adjustment and forfeiture of groundwater allocation

299,379

385,945

905,863

692,254

1,205,242

1,078,199

14.2 Adjustment and forfeiture of groundwater allocation - urban water system

14,329

11,874

17,463

5,205

31,792

17,079

14 Total groundwater liability decreases

 

313,708

397,819

923,326

697,459

1,237,034

1,095,278

 

Total water liability decreases

 

447,200

590,863

2,970,811

3,006,508

3,418,011

3,597,371

 

Water asset decreases

 

17 Surface water asset decreases

 

17.1 Evaporation from surface water

311,829

313,670

2,725,037

2,672,732

3,036,866

2,986,402

17.2 River outflow from the region

1,705,320

4,547,315

5,179,600

9,565,600

5,179,600

9,565,600

17.4 Leakage to landscape

17.5 Overbank flood spilling

437,901

299,151

0

0

437,901

299,151

17.6 Surface water diversions - other statutory rights

37,687

37,686

30,523

30,523

68,210

68,209

17.7 Entitled diversion on non-allocated surface water to users

1,398,405

1,090,894

668,541

523,155

2,066,946

1,614,049

17.8 Entitled diversion of non-allocated surface water to urban water system

4,177

3,567

8,896

6,294

13,073

9,861

17.10 River and floodplain leakage, evaporation and errors

6,847,029

19,638,619

7,652,345

17,942,623

14,499,374

37,581,242

17.17 Decrease of inter-region surface water claim on water

0

0

215,000

625,000

215,000

625,000

17 Total surface water asset decreases

 

10,742,348

25,930,902

16,479,942

31,365,927

25,516,970

52,749,514

 

18 Groundwater asset decreases

 

18.1 Groundwater outflow to outside region

0

0

21

19

21

19

18.2 Groundwater outflow to outside region at coast

0

0

1,446

1,551

1,446

1,551

18.3 Discharge to landscape

34,933

7,104

2,698,664

2,511,257

2,733,597

2,518,361

18.7 Groundwater extractions - other statutory rights

74,329

48,948

156,087

145,228

230,416

194,176

18.18 Other groundwater decreases

65,378

8,341

25,180

15,930

90,558

24,271

18 Total groundwater asset decreases

 

174,640

64,393

2,881,398

2,673,985

3,056,038

2,738,378

 

Total water asset decreases

 

10,916,988

25,995,295

19,361,340

34,039,912

28,573,008

55,487,892

 

Water liability increases

 

21 Surface water liability increases

 

21.1 Surface water allocation announcements

825,265

1,599,474

6,933,312

7,412,187

7,758,577

9,011,661

21.2 Surface water allocation announcements - urban system

42,492

42,499

496,545

540,521

539,037

583,020

21 Total surface water liability increases

 

867,757

1,641,973

7,429,857

7,952,708

8,297,614

9,594,681

 

22 Groundwater liability increases

 

22.1 Groundwater allocation announcements

661,110

634,486

1,485,883

1,051,042

2,146,993

1,685,528

22.2 Groundwater allocation announcements - urban system

27,350

19,107

41,466

6,886

68,816

25,993

22 Total groundwater liability increases

 

688,460

653,593

1,527,349

1,057,928

2,215,809

1,711,521

 

Total water liability increases

 

1,556,217

2,295,566

8,957,206

9,010,636

10,513,423

11,306,202

 

25 Unaccounted-for difference

25.1 Unaccounted-for difference

 

36,037

12,491

(2,316,350)

96,063

(2,280,313)

108,554

 

Change in net water assets

 

(624,863)

1,335,629

(2,202,598)

3,213,478

(2,827,461)

4,549,107

– = Data not available

  1. Please note 1,705,320 ML for the 201213 year and the whole volume for the 201112 year for the Southern Basin for line item 9.2 'River inflow to region' was eliminated in the whole region.
  2. Please note the volume for the Northern Basin for line item 17.2 'River outflow from the region' was eliminated in the whole region.

   

 

Table 3  Statement of Water Flows for the year ended 30 June 2013
  Northern Basin Southern Basin Whole region

2013
ML

2012
ML

2013
ML

2012
ML

2013
ML

2012
ML

Water inflows
 
9 Surface water inflows
  9.1 Precipitation on surface water 157,744 247,093 1,002,385 1,401,857 1,160,129 1,648,950
9.2 River inflow to region 0 0 2,156,320 4,547,315 451,000 0
9.4 Runoff to surface water 10,679,507 27,429,924 14,464,367 30,168,072 25,143,874 57,597,996
9.5 Point return from irrigation scheme 0 0 212,773 198,314 212,773 198,314
9.6 Overbank flood return to river channel

 –

 –

 –

 –

 –

 –

9.9 Discharge from urban water system 0 0 31,636 34,325 31,636 34,325
9.10 Direct discharge by user

 –

 –

 –

 –

 –

 –

9.11 Delivery of water under inter-region agreement to surface water 0 0 2,141,079 1,491,312 2,141,079 1,491,312
9 Total surface water inflows   10,837,251 27,677,017 20,008,560 37,841,195 29,140,491 60,970,897
 
10 Groundwater inflows
  10.1 Groundwater inflow from outside region 0 0 2,646 2,797 2,646 2,797
10.2 Groundwater inflow from outside region at coast 0 0 50 53 50 53
10.3 Recharge from landscape 546,103 254,547 992,995 2,871,380 1,539,098 3,125,927
10.5 Leakage from off-channel water storage

 –

 –

 –

 –

 –

 –

10.6 Leakage from urban water system

 –

 –

 –

 –

 –

 –

10.7 Leakage from irrigation scheme

 –

 –

 –

 –

 –

 –

10.8 Managed aquifer recharge - private user 0 0 631 2,340 631 2,340
10.13 Other groundwater increases 53,825 1,116,554 216,284 1,567,106 270,109 2,683,660
10 Total groundwater inflows   599,928 1,371,101 1,212,606 4,443,676 1,812,534 5,814,777
 
Total water inflows   11,437,179 29,048,118 21,221,166 42,284,871 30,953,025 66,785,674
 
Water outflows
 
17 Surface water outflows
  17.1 Evaporation from surface water 311,829 313,670 2,725,037 2,672,732 3,036,866 2,986,402
17.2 River outflow from the region 1,705,320 4,547,315 5,179,600 9,565,600 5,179,600 9,565,600
17.4 Leakage to landscape

 –

 –

 –

 –

 –

 –

17.5 Overbank flood spilling 437,901 299,151 0 0 437,901 299,151
17.6 Surface water diversions - other statutory rights 37,687 37,686 30,523 30,523 68,210 68,209
17.7 Entitled diversion on non-allocated surface water to users

1,398,405

1,090,894

668,541

523,155

2,066,946

1,614,049

17.8 Entitled diversion of non-allocated surface water to urban water system

4,177

3,567

8,896

6,294

13,073

9,861

17.10 River and floodplain leakage, evaporation and errors

6,847,029

19,638,619

7,652,345

17,942,623

14,499,374

37,581,242

17.11 Entitled diversion of allocated surface water to users

1,437,049

685,467

7,407,128

5,593,729

8,844,177

6,279,196

17.12 Entitled diversion of allocated surface water to urban water system

21,563

12,478

344,035

283,824

365,598

296,302

17 Total surface water outflows   12,200,960 26,628,847 24,016,105 36,618,480 34,511,745 58,700,012
 
18 Groundwater outflows
  18.1 Groundwater outflow to outside region 0 0 21 19 21 19
18.2 Groundwater outflow to outside region at coast 0 0 1,446 1,551 1,446 1,551
18.3 Discharge to landscape

34,933

7,104

2,698,664

2,511,257

2,733,597

2,518,361

18.7 Groundwater extractions - other statutory rights 74,329 48,948 156,087 145,228 230,416 194,176
18.11 Entitled extraction of allocated groundwater to users 361,731 248,541 580,611 358,429 942,342 606,970
18.12 Entitled extraction of allocated groundwater to urban water system 13,021 7,233 24,003 1,681 37,024 8,914
18.18 Other groundwater decreases 65,378 8,341 25,180 15,930 90,558 24,271
18 Total groundwater outflows  

549,392

320,167

3,486,012

3,034,095

4,035,404

3,354,262

 
Total water outflows   12,750,352 26,949,014 27,502,117 39,652,575 38,547,149 62,054,274
 
25 Unaccounted-for difference
25.1 Unaccounted-for difference   

36,037

12,491

(2,316,350)

96,063

(2,280,313)

108,554

 
Change in water storage   (1,349,210) 2,086,613 (3,964,601) 2,536,233 (5,313,811) 4,622,846
 
Opening water storage  

5,879,899

3,793,286

22,478,248

19,942,015

28,358,147

23,735,301

  add: Change in water storage

(1,349,210)

2,086,613

(3,964,601)

2,536,233

(5,313,811)

4,622,846

Closing water storage  

4,530,689

5,879,899

18,513,647

22,478,248

23,044,336

28,358,147

   – = Data not available

  1. Please note 1,705,320 ML for the 201213 year and the whole volume for the 201112 year for the Southern Basin for line item 9.2 'River inflow to region' was eliminated in the whole region.
  2. Please note the volume for the Northern Basin for line item 17.2 'River outflow from the region' was eliminated in the whole region.

Reconciliations

Segment reconciliations

Tables 4 and 5 present information on (1) reconciliation of closing water storage to total water assets for the two segments, and (2) reconciliation of the net change in water storage to the change in net water assets.

Table 4 Reconciliation of closing water storage to total water assets for two segments
Description

Northern Basin

Southern Basin

Whole region

2013
ML

2012
ML

2013
ML

2012
ML

2013
ML

2012
ML

Closing water storage presented in the Statement of Water Flows

4,530,689

5,879,899

18,513,647

22,478,248

23,044,336

28,358,147

1 Surface water
1.1 Storages

2,972,416

4,314,709

13,039,374

16,872,487

16,011,790

21,187,196

1.2 Unregulated river

1.3 Regulated river

20,885

16,249

998,377

1,309,763

1,019,262

1,326,012

1.4 Lakes and wetlands

1,799,526

1,811,372

1,799,526

1,811,372

1.10 Other surface water assets

0

0

20,592

19,952

20,592

19,952

Total 1 Surface water 

2,993,301

4,330,958

15,857,869

20,013,574

18,851,170

24,344,532

 
2 Groundwater
2.1 Water Table aquifer

2.2 Underlying aquifers

2.5 Other groundwater assets

1,537,388

1,548,941

2,655,778

2,464,674

4,193,166

4,013,615

Total 2 Groundwater store

1,537,388

1,548,941

2,655,778

2,464,674

4,193,166

4,013,615

 
Total closing water storage

4,118,702

5,879,899

18,513,647

22,478,248

23,044,336

28,358,147

 
plus Other water assets
1 Surface water
1.5 Inter-region claim on water

0

0

306,397

913,776

306,397

913,776

Total 1 Surface water

0

0

306,397

913,776

306,397

913,776

 
Total other water assets

0

0

306,397

913,776

306,397

913,776

 
Total water assets

4,530,689

5,879,899

18,820,044

23,392,024

23,350,733

29,271,923

 

– = Data not available

 

Table 5  Reconciliation of the net change in water storage to the change in net water assets for two segments
Description

Northern Basin

Southern Basin

Whole region

2013
ML

2012
ML

2013
ML

2012
ML

2013
ML

2012
ML

Change in net water assets

(624,863)

1,335,629

(2,202,598)

3,213,478

(2,827,461)

4,549,107

adjustments for:            
(Increase) / decrease in non-physical water assets            
1 Surface water            
1.5 Inter-region claim on water

0

0

607,379

(443,710)

607,379

(443,710)

             
Increase / (decrease) in water liabilities            
5 Surface water liability            
5.1 Surface water allocation remaining

(724,347)

750,984

(2,368,791)

(233,869)

(3,093,138)

517,115

5.2 Surface water allocation remaining - urban water system

0

0

0

(25)

0

(25)

6 Groundwater liability            
6.1 Groundwater allocation remaining

0

0

(591)

359

(591)

359

             
Net change in water storage

(1,349,210)

2,086,613

(3,964,601)

2,536,233

(5,313,811)

4,622,846