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Ord: Statement of Changes in Water Assets and Water Liabilities

For the water account period 01 July 2022 - 30 June 2023

  • The volume of water in the region's storages increased significantly during 2022-23.
  • This increase represents the change in water volume in the region's surface water storages.

Schematic representation of the Ord region. Total water inflows during 2022-23 was 10,440 GL. Total water outflows was 10,904 GL. Closing net water storage on 30 June 2023 was 3,283 GL more than the previous year.

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 assets and water liabilities that occurred during the year.

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  2023 (ML) 2022 (ML) 2021 (ML) 2020 (ML) 2019 (ML) 2018 (ML)
Water inflows
Surface water inflows 9,835,353 3,164,327 6,911,451 2,782,247 1,491,160 2,929,647
Precipitation on storages 1,030,085 468,799 519,171 389,085 403,422 541,722
Precipitation on rivers 94,572 36,560 69,022 35,557 23,681 35,867
Runoff 8,607,587 2,598,701 6,226,150 2,296,980 1,012,307 2,297,960
Point return from irrigation 51,000 51,000 51,000 51,000 51,000 51,000
Flood return 51,518 8,682 45,523 9,040 165 2,513
Discharge from wastewater 591 585 585 585 585 585
 
Groundwater inflows 604,302 352,398 445,529 329,380 280,358 348,221
Groundwater recharge * 604,302  352,398 445,529 329,380 280,358 348,221
 
Total water inflows 10,439,655 3,516,725 7,356,980 3,111,627 1,771,518 3,277,868
Water outflows
Surface water outflows            
Evaporation from storages 2,028,691 1,923,584 1,405,261 1,471,939 1,926,219 2,228,217
Evaporation from rivers 118,727 89,089 97,005 82,299 80,090 87,021
River outflow 7,741,785 3,139,307 4,024,478 4,020,758 2,813,434 3,605,434
Leakage to landscape 80 80 80 80 80 80
Overbank flow 140,434 34,965 110,634 34,975 1,203 17,835
Recharge to groundwater * 604,302 352,398 445,529 329,380 280,358 348,221
Allocated diversion to agriculture users 31,224 29,057 20,224 23,764 31,335 27,746
Allocated diversion to mining users 3,027 3,036 2,220 2,868 2,386 2,938
Allocated diversion to stock and domestic users 235 248 548 548 543 513
Allocated diversion to parks, gardens and recreation users 600 703 634 634 634 631
Allocated diversion to industry users 13 13 – – – –
Allocated diversion to commercial users 416 467 329 394 342 473
Allocated diversion to urban users 700 700 425 425 425 425
Allocated diversion to irrigation users 228,213 214,665 247,069 280,105 271,224 193,766
 
Groundwater outflows 5,566 6,171 7,185 6,628 6,202 6,637
Allocated extraction to agriculture users 260 248 215 215 293 118
Allocated extraction to mining users 2,209 2,289 4,386 3,828 3,506 4,067
Allocated extraction to stock and domestic users 112 172 178 178 173 172
Allocated extraction to commercial users 226 646 597 588 411 461
Allocated extraction to urban users 2,700 2,700 1,778 1,778 1,778 1,778
Allocated extraction to industry users 4 56 – – – –
Allocated extraction to parks, gardens and recreation users 55 60 31 41 41 41
 
Total water outflows 10,904,013 5,794,483 6,361,621 6,254,797 5,414,475 6,519,937
 
Unaccounted-for difference 3,747,303 1,730,737 2,861,257 1,364,221 878,148 402,010
 
 
Change in water storage            
Change in surface water storage 3,282,945 (547,021) 3,856,616 (1,778,949) (2,764,809) (2,840,059)
Change in groundwater storage – – – – – –
Total change in water storage 3,282,945 (547,021) 3,856,616 (1,778,949) (2,764,809) (2,840,059)
 
Closing water storage 10,896,851 7,613,906 8,160,927 4,304,311 6,083,260 8,848,069
 
 
Change in water liability
Surface water liability (277) 0 14,385 57,620 (67,768) (29,675)
Surface water carryover (277) 0 14,385 57,620 (67,768) (29,675)
 
Groundwater liability (7) 0 0 0 0 (1)
Groundwater carryover (7) 0 0 0 0 (1)
Total change in water liability (284) 0 14,385 57,620 (67,768) (29,676)
             
Net change in water assets 3,283,229 (547,021) 3,842,231 (1,836,569) (2,697,041) (2,810,383)

* between-store flows

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