Murray-Darling Basin
Segments

Water accounting statements
- Segment water accounting statements
Reconciliations
- Segment reconciliations

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 to 3 provide water accounting statements for the two segments plus consolidated statements for the whole region.

Figure 1. Segment boundaries for the MDB region for the 2011 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 2011
		Northern Basin		Southern Basin		Whole region
		2011 (ML)	2010 (ML)	2011 (ML)	2010(ML)	2011 (ML)	2010(ML)

Water assets

1 Surface water
	1.1 Storages	3,333,324	788,363	15,831,830	6,658,886	19,165,154	7,447,249
	1.2 Unregulated river	–	–	–	–	–	–
	1.3 Regulated river	19,234	17,086	1,277,467	951,440	1,296,701	968,526
	1.4 Lakes and wetlands	–	–	1,907,353	1,169,447	1,907,353	1,169,447
	1.5 Inter-region claim on water	0	0	470,066	409,000	470,066	409,000
	1.10 Other surface water assets	–	–	18,131	13,574	18,131	13,574
Total 1 Surface water		3,352,558	805,449	19,504,847	9,202,347	22,857,405	10,007,796

2 Groundwater
	2.1 Water table aquifer	–	–	–	–	–	–
	2.2 Underlying aquifers	–	–	–	–	–	–
	2.5 Other groundwater assets	440,923	368,741	886,795	827,825	1,327,718	1,196,566
Total 2 Groundwater store		440,923	368,741	886,795	827,825	1,327,718	1,196,566

Total water assets		3,793,481	1,174,190	20,391,642	10,030,172	24,185,123	11,204,362

Water liabilities

5 Surface water liability
	5.1 Surface water allocation remaining	1,341,311	132,712	5,168,727	2,249,406	6,510,038	2,382,118
	5.2 Surface water allocation remaining – urban water system	0	(35)	25	(2)	25	(37)
Total 5 Surface water liability		1,341,311	132,677	5,168,752	2,249,404	6,510,063	2,382,081

6 Groundwater liability
	6.1 Groundwater allocation remaining	0	0	1,958	1,666	1,958	1,666
	6.2 Groundwater allocation remaining – urban water system	0	0	0	0	0	0
Total 6 Groundwater liability		0	0	1,958	1,666	1,958	1,666

Total water liabilities		1,341,311	132,677	5,170,710	2,251,070	6,512,021	2,383,747

Net water assets		2,452,170	1,041,513	15,220,932	7,779,102	17,673,102	8,820,615

Net water assets
	Opening net water assets	1,041,513	1,194,577	7,779,102	4,939,178	8,820,615	6,133,755
	Change in net water assets	1,410,657	(153,064)	7,441,830	2,839,924	8,852,487	2,686,860
Closing net water assets		2,452,170	1,041,513	15,220,932	7,779,102	17,673,102	8,820,615

– = Data not available

Table 2. Statement of changes in water assets and water liabilities for the year ended 30 June 2011
		Northern Basin		Southern Basin		Whole region
		2011 (ML)	2010 (ML)	2011 (ML)	2010 (ML)	2011 (ML)	2010 (ML)

Water asset increases

9 Surface water increases
	9.1 Precipitation on surface water	226,858	84,924	1,792,762	852,813	2,019,620	937,737
	9.2 River inflow to region	0	0	1,840,333	2,431,343	0	0
	9.4 Runoff to surface water	31,009,785	25,778,044	43,201,180	15,515,333	74,210,965	41,293,377
	9.5 Point return from irrigation scheme	0	0	216,917	23,531	216,917	23,531
	9.6 Overbank flood return to river channel	–	–	–	–	–	–
	9.9 Discharge from urban water system	0	0	34,897	29,143	34,897	29,143
	9.10 Direct discharge by user	–	–	–	–	–	–
	9.15 Increase of inter-region claim on water	0	0	3,137,374	2,071,991	3,137,374	2,071,991
Total 9 Connected surface water increases		31,236,643	25,862,968	50,223,463	20,924,154	79,619,773	44,355,779

10 Groundwater increases
	10.1 Groundwater inflow from outside region	0	0	2,879	2,578	2,879	2,578
	10.2 Groundwater inflow from outside region at coast	0	0	62	57	62	57
	10.3 Recharge from landscape	5,417,751	4,272,224	4,366,668	1,533,481	9,784,419	5,805,705
	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	4,158	5,037	4,158	5,037
	10.13 Other groundwater increases	80,562	0	65,215	0	145,777	0
Total 10 Groundwater increases		5,498,313	4,272,224	4,438,982	1,541,153	9,937,295	5,813,377

Total water asset increases		36,734,956	30,135,192	54,662,445	22,465,307	89,557,068	50,169,156

Water liability decreases

13 Surface water liability decreases
	13.1 Adjustment and forfeiture of surface water allocation	187,947	43,112	1,406,752	(51,967)	1,594,699	(8,855)
	13.2 Adjustment and forfeiture of surface water allocation – urban water system	26,606	25,228	244,792	163,051	271,398	188,279
Total 13 Surface water liability decreases		214,553	68,340	1,651,544	111,084	1,866,097	179,424

14 Groundwater liability decreases
	14.1 Adjustment and forfeiture of groundwater allocation	271,847	106,193	608,198	219,955	880,045	326,148
	14.2 Adjustment and forfeiture of groundwater allocation – urban water system	9,128	7,747	3,292	2,893	12,420	10,640
Total 14 Groundwater liability decreases		280,975	113,940	611,490	222,848	892,465	336,788

Total water liability decreases		495,528	182,280	2,263,034	333,932	2,758,562	516,212

Water asset decreases

17 Surface water decreases
	17.1 Evaporation from surface water	372,396	204,146	3,133,172	2,472,807	3,505,568	2,676,953
	17.2 River outflow from the region	1,840,333	2,431,343	12,849,073	0	12,849,073	0
	17.4 Leakage to landscape	–	–	–	–	–	–
	17.5 Overbank flood spilling	652,699	398,250	0	0	652,699	398,250
	17.6 Diversions: other statutory rights	28,151	28,151	19,135	19,135	47,286	47,286
	17.7 Non-allocated diversions to users	1,451,542	1,065,132	565,240	152,457	2,016,782	1,217,589
	17.8 Non-allocated diversions – urban water system	3,167	30	17,421	7,921	20,588	7,951
	17.10 River and floodplain leakage, evaporation and errors	23,767,902	21,559,916	18,546,512	10,301,265	42,314,414	31,861,181
	17.17 Decrease of inter-region claim on water	0	0	765,817	3,000	765,817	3,000
Total 17 Surface water decreases		28,116,190	25,686,968	35,896,370	12,956,585	62,172,227	36,212,210

18 Groundwater decreases
	18.1 Groundwater outflow to outside region	0	0	3	1	3	1
	18.2 Groundwater outflow to outside region at coast	0	0	1,663	1,668	1,663	1,668
	18.3 Discharge to landscape	36,992	0	271,136	248,229	308,128	248,229
	18.7 Extraction: other statutory rights	12,858	8,566	10,825	10,225	23,683	18,791
	18.18 Other groundwater decreases	8,380	0	6,245	0	14,625	0
Total 18 Groundwater decreases		58,230	8,566	289,872	260,123	348,102	268,689

Total water asset decreases		28,174,420	25,695,534	36,186,242	13,216,708	62,520,329	36,480,899

Water liability increases

21 Surface water liability increases
	21.1 Surface water allocation announcements	1,904,177	280,257	7,839,249	4,672,632	9,743,426	4,952,889
	21.2 Surface water allocation announcements – urban water system	42,150	51,832	516,694	441,178	558,844	493,010
Total 21 Surface water liability increases		1,946,327	332,089	8,335,943	5,113,810	10,282,270	5,445,899

22 Groundwater liability increases
	22.1 Groundwater allocation announcements	396,879	334,973	817,370	808,408	1,214,249	1,143,381
	22.2 Groundwater allocation announcements – urban water system	18,175	17,299	4,631	4,611	22,806	21,910
Total 22 Groundwater liability increases		415,054	352,272	822,001	813,019	1,237,055	1,165,291

Total water liability increases		2,361,381	684,361	9,157,944	5,926,829	11,519,325	6,611,190

25 Unacconted-for difference

Total unaccounted-for difference		5,284,026	4,090,641	4,139,463	815,778	9,423,489	4,906,419

Change in net water assets		1,410,657	(153,064)	7,441,830	2,839,924	8,852,487	2,686,860

– = Data not available

Table 3. Statement of Physical Water Flows for the year ended 30 June 2011
		Northern Basin		Southern Basin		Whole region
		2011 (ML)	2010 (ML)	2011 (ML)	2010 (ML)	2011 (ML)	2010 (ML)

Water inflows

9 Surface water increases
	9.1 Precipitation on surface water	226,858	84,924	1,792,762	852,813	2,019,620	937,737
	9.2 River inflow to region	0	0	1,840,333	2,431,343	0	0
	9.4 Runoff to surface water	31,009,785	25,778,044	43,201,180	15,515,333	74,210,965	41,293,377
	9.5 Point return from irrigation scheme	0	0	216,917	23,531	216,917	23,531
	9.6 Overbank flood return to river channel	–	–	–	–	–	–
	9.9 Discharge from urban water system	0	0	34,897	29,143	34,897	29,143
	9.10 Direct discharge by user	–	–	–	–	–	–
	9.11 Delivery of water under inter-region agreement	0	0	2,310,491	1,860,991	2,310,491	1,860,991
Total 9 Connected surface water increases		31,236,643	25,862,968	49,396,580	20,713,154	78,792,890	44,144,779

10 Groundwater increases
	10.1 Groundwater inflow from outside region	0	0	2,879	2,578	2,879	2,578
	10.2 Groundwater inflow from outside region at coast	0	0	62	57	62	57
	10.3 Recharge from landscape	5,417,751	4,272,224	4,366,668	1,533,481	9,784,419	5,805,705
	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	4,158	5,037	4,158	5,037
	10.13 Other groundwater increases	80,562	0	65,215	0	145,777	0
Total 10 Groundwater increases		5,498,313	4,272,224	4,438,982	1,541,153	9,937,295	5,813,377

Total water inflows		36,734,956	30,135,192	53,835,562	22,254,307	88,730,185	49,958,156

Water outflows

17 Surface water decreases
	17.1 Evaporation from surface water	372,396	204,146	3,133,172	2,472,807	3,505,568	2,676,953
	17.2 River outflow from the region	1,840,333	2,431,343	12,849,073	0	12,849,073	0
	17.4 Leakage to landscape	–	–	–	–	–	–
	17.5 Overbank flood spilling	652,699	398,250	0	0	652,699	398,250
	17.6 Diversions: other statutory rights	28,151	28,151	19,135	19,135	47,286	47,286
	17.7 Non-allocated diversions to users	1,451,542	1,065,132	565,240	152,457	2,016,782	1,217,589
	17.8 Non-allocated diversions – urban water system	3,167	30	17,421	7,921	20,588	7,951
	17.10 River and floodplain leakage, evaporation and errors	23,767,902	21,559,916	18,546,512	10,301,265	42,314,414	31,861,181
	17.11 Surface water allocation diversion	507,631	333,852	3,513,176	3,363,798	4,020,807	3,697,650
	17.12 Surface water allocation diversion – urban water system	15,509	26,292	251,875	278,974	267,384	305,266
Total 17 Surface water decreases		28,639,330	26,047,112	38,895,604	16,596,357	65,694,601	40,212,126

18 Groundwater decreases
	18.1 Groundwater outflow to outside region	0	0	3	1	3	1
	18.2 Groundwater outflow to outside region at coast	0	0	1,663	1,668	1,663	1,668
	18.3 Discharge to landscape	36,992	0	271,136	248,229	308,128	248,229
	18.7 Extraction: other statutory rights	12,858	8,566	10,825	10,225	23,683	18,791
	18.11 Groundwater allocation extraction	125,032	228,780	208,880	588,429	333,912	817,209
	18.12 Groundwater allocation diversion – urban water system	9,047	9,552	1,339	1,742	10,386	11,294
	18.18 Other groundwater decreases	8,380	0	6,245	0	14,625	0
Total 18 Groundwater decreases		192,309	246,898	500,091	850,294	692,400	1,097,192

Total water outflows		28,831,639	26,294,010	39,395,695	17,446,651	66,387,001	41,309,318

25 Unaccounted-for difference
Total Unaccounted-for difference		5,284,026	4,090,641	4,139,463	815,778	9,423,489	4,906,419

Change in water storage		2,619,291	(249,459)	10,300,404	3,991,878	12,919,695	3,742,419

Opening water storage		1,174,190	1,423,649	9,621,172	5,629,294	10,795,362	7,052,943
Add: Change in water storage		2,619,291	(249,459)	10,300,404	3,991,878	12,919,695	3,742,419
Closing water storage		3,793,481	1,174,190	19,921,576	9,621,172	23,715,057	10,795,362

– = Data not available

Reconciliations

Segment reconciliations

Table 4. 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
Description	The 2010–11 year (ML)	The 2009–10 year (ML)	The 2010–11 year (ML)	The 2009–10 year (ML)	The 2010–11 year (ML)	The 2009–10 year (ML)
Change in net water assets	1,410,657	(153,064)	7,441,830	2,839,924	8,852,487	2,686,860
adjustments for:
Increase / (decrease) in:
1 Surface water
1.5 Inter-region claim on water	0	0	61,066	208,000	61,066	208,000
Total non-physical water assets	0	0	61,066	208,000	61,066	208,000

5 Surface water liability
5.1 Surface water allocation remaining	1,208,599	(96,707)	2,919,321	1,360,801	4,127,920	1,264,094
5.2 Surface water allocation remaining – urban water system	35	312	27	(847)	62	(535)

6 Groundwater liability
6.1 Groundwater allocation remaining	0	0	292	24	292	24
6.2 Groundwater allocation remaining – urban water system	0	0	0	(24)	0	(24)

Total liabilities	1,208,634	(96,395)	2,919,640	1,359,954	4,128,274	1,263,559

Net change in water storage	2,619,291	(249,459)	10,300,404	3,991,878	12,919,695	3,742,419

Table 5. Reconciliation of closing water storage to total water assets for two segments
Description	Northern Basin		Southern Basin		Whole region
Description	Volume on 30 June 2011 (ML)	Volume on 30 June 2010 (ML)	Volume on 30 June 2011 (ML)	Volume on 30 June 2010 (ML)	Volume on 30 June 2011 (ML)	Volume on 30 June 2010 (ML)
*Closing water storage*
1 Surface water
1.1 Storages	3,333,324	788,363	15,831,830	6,658,886	19,165,154	7,447,249
1.2 Unregulated river	–	–	–	–	–	–
1.3 Regulated river	19,234	17,086	1,277,467	951,440	1,296,701	968,526
1.4 Lakes and wetlands	–	–	1,907,353	1,169,447	1,907,353	1,169,447
1.10 Other surface water assets	–	–	18,131	13,574	18,131	13,574
Total 1 Surface water	3,352,558	805,449	19,034,781	8,793,347	22,387,339	9,598,796

2 Groundwater
2.1 Water table aquifer	–	–	–	–	–	–
2.2 Underlying aquifers	–	–	–	–	–	–
2.5 Other groundwater assets	440,923	368,741	886,795	827,825	1,327,718	1,196,566
Total 2 Groundwater store	440,923	368,741	886,795	827,825	1,327,718	1,196,566

*Total closing water storage*	*3,793,481*	*1,174,190*	*19,921,576*	*9,621,172*	*23,715,057*	*10,795,362*

*Non-physical water asset*
1.5 Inter-region claim on water	0	0	470,066	409,000	470,066	409,000
*Total – non-physical water asset*	0	0	470,066	409,000	470,066	409,000

Total water assets	3,793,481	1,174,190	20,391,642	10,030,172	24,185,123	11,204,362

– = Data not available

Murray-Darling BasinSegments

Water accounting statements

Segment water accounting statements

Reconciliations

Segment reconciliations

Graphical Views

Murray-Darling Basin
Segments