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Border Rivers: Water Accounting Statements

as at 30 June 2020

  • The volume of water in the catchment's surface water storages increased during 2019–20.
  • Closing net water assets, which is the volume of water assets minus the water liabilities, more than doubled from last year.

Schematic representation of the Border Rivers catchment. Total surface water and groundwater assets at 30 June 2020 was 178 GL. Total water liabilities was 8 GL. Closing net water assets at 30 June 2020 was 170 GL, 107% more than last year.

 

To view the water accounting statements for the Border Rivers catchment scroll down this page or click on the links below:

 

Statement of Water Assets and Water Liabilities

Lake Eildon, Murray–Darling Basin region (Alison Pouliot © 2009)

 

The Statement of Water Assets and Water Liabilities is provided in the table below. The statement presents the volume of water assets, and water liabilities at the start and end of the reporting year.

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  2020 ML 2019 ML 2018 ML 2017 ML 2016 ML 2015 ML
Water assets
Surface water 98,268 46,166 336,068 582,458 212,042 208,382
Accessible storage 92,960 43,559 **333,412 **566,590 **202,365 **198,791
Dead storage 2,065 2,065 2,065 2,065 2,065 2,065
Rivers 3,243 542 **591 **13,803 **7,612 **7,526
 
Groundwater 80,210 80,210 47,710 47,710 47,710 47,710
Aquifers 80,210 80,210 47,710 47,710 47,710 47,710
 
Total water assets 178,478 126,376 383,778 630,168 259,752 256,092
Water liabilities
Surface water liability 7,836 31,201 146,289 209,585 58,652 24,363
Allocation remaining: individual users 6,940 30,047 139,527 208,451 49,837 24,259
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: environmental purposes 896 1,154 6,762 1,134 8,815 104
 
Groundwater liability 338 12,863 0 (16) (62) 0
Allocation remaining: individual users 338 12,863 0 (16) (62) 0
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: environmental purposes 0 0 0 0 0 0
 
Total water liabilities 8,174 44,064 146,289 209,569 58,590 24,363
Net water assets
Net surface water assets 90,432 14,965 189,779 372,873 153,390 184,019
Opening net surface water assets 14,965 189,779 372,873 153,390 184,019 148,555
Change in net surface water assets 75,467 (174,814) (183,094) 219,483 (30,629) 35,464
Closing net surface water assets 90,432 14,965 189,779 372,873 153,390 184,019
 
Net groundwater assets 79,872 67,347 47,710 47,726 47,772 47,710
Opening net groundwater assets 67,347 47,710 47,726 47,772 47,710 47,710
Change in net groundwater assets 12,525 19,637 (16) (46) 62 0
Closing net groundwater assets 79,872 67,347 47,710 47,726 47,772 47,710
Total closing net water assets 170,304 82,312 237,489 420,599 201,162 231,729
             
Total change in net water assets 87,992 (155,177) (183,110) 219,437 (30,567) 35,464
 

 

** different to published volume in historical accounts (see Governance for more information)

Note: quantification approaches used to derive each item volume are provided in the Methods

 

Statement of Changes in Water Assets and Water Liabilities

Murray River near Mildura (istock © bonzarelli)

 

The Statement of Changes in Water Assets and Water Liabilities is provided in the table below. The statement presents the actual water flows associated with the region's water stores, as well as the changes in water storages and water liabilities that occurred during the year.

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  2020 ML 2019 ML 2018 ML 2017 ML 2016 ML 2015 ML
Water inflows
Surface water inflows 443,252 319,060 524,224 1,777,091 669,721 637,964
Precipitation 23,357 18,513 **29,485 **64,469 **32,849 **34,904
Discharge: groundwater* – – – – – –
Runoff 401,403 300,547 **493,181 **1,700,153 **633,565 **599,242
Flood return 18,492 0 **1,558 **12,469 **3,307 **3,818
 
Groundwater inflows 0 0 0 0 0 0
Inter-region inflow – – – – – –
Recharge: landscape – – – – – –
Recharge: surface water* – – – – – –
Other groundwater increases 0 0 0 0 0 0
 
Total water inflows 443,252 319,060 524,224 1,777,091 669,721 637,964
Water outflows
Surface water outflows 304,780 336,019 441,171 1,468,014 370,706 353,963
Evaporation 64,922 70,495 **98,702 **122,919 **77,636 **71,795
Outflow 70,944 3,298 **63,657 **363,809 **67,123 **88,680
Recharge: groundwater* – – – – – –
Overbank flow 18,492 0 **10,362 **169,736 **12,603 **18,113
Diversion: basic rights 12,097 13,474 9,894 9,894 10,274 8,000
Floodplain harvesting 17,849 2,950 2,950 121,775 **0 **0
Non-allocated diversion: individual users 111,266 25,519 64,293 506,274 125,659 106,449
Non-allocated diversions: urban system 1,950 833 881 834 900 906
Non-allocated diversions: environmental purposes 3,246 0 944 23,602 1,047 1,815
Allocated diversion: individual users 3,659 211,556 180,751 148,707 74,902 57,699
Allocated diversion: urban system 305 494 515 464 562 506
Allocated diversion: environmental purposes 0 7,400 8,222 0 0 0
 
Groundwater outflows 31,187 32,873 29,927 24,589 27,168 26,918
Inter-region outflow – – – – – –
Discharge: landscape – – – – – –
Discharge: surface water* – – – – – –
Extraction: basic rights 2,717 2,717 **3,366 3,369 3,369 **2,361
Allocated extraction: individual users 20,656 21,408 26,519 21,187 **23,759 **24,524
Allocated extractions: urban system 7,814 8,748 42 33 40 33
Allocated extractions: environmental purposes 0 0 0 0 0 0
Other groundwater decreases 0 0 0 0 0 0
 
Total water outflows 335,967 368,892 471,098 1,492,603 397,874 380,881
 
Unaccounted-for difference (55,183) (207,570) **(299,516) **85,928 **(268,186) **(232,473)
 
 
Change in water storage            
Change in surface water storage 52,102 (289,902) (246,390) 370,416 3,660 24,610
Change in groundwater storage 0 32,500 0 0 0 0
Total change in water storage 52,102 (257,402) (246,390) 370,416 3,660 24,610
 
Closing water storage 178,478 126,376 383,778 630,168 259,752 256,092
 
 
Change in water liability
Surface water liability (23,365) (115,088) (63,296) 150,933 34,289 (10,854)
Allocation remaining: individual users (23,107) (109,480) (68,924) 158,614 25,578 (10,861)
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: environmental purposes (258) (5,608) 5,628 (7,681) 8,711 7
 
Groundwater liability (12,525) 12,863 16 46 (62) 0
Allocation remaining: individual users (12,525) 12,863 16 46 (62) 0
Allocation remaining: urban system 0 0 0 0 0 0
Allocation remaining: environmental purposes 0 0 0 0 0 0
Total change in water liability (35,890) (102,225) (63,280) 150,979 34,227 (10,854)
             
Net change in water assets 87,992 (155,177) (183,110) 219,437 (30,567) 35,464
 

 

* between-store flows

** different to published volume in historical accounts (see Governance for more information)

Note: quantification approaches used to derive each item volume are provided in the Methods