Murray–Darling Basin
1.1 Storages

Supporting information

The volumetric value for the line item at the end of the 2011–12 year was 21,187,196 ML.

The line item represents the volume of water held in storages that are used to supply water for entitlements in regulated systems and for flood mitigation purposes. The volume reported for this line item includes the volume of dead storage.

Volumetric data for a number of small storages were not received at the time of compilation of this note, and are therefore not included in the following table.

A number of mid-river storages, locks, weirs and the like also support the delivery of water. These storages form part of the river channel and usually only provide very short-term supply. The volume for a number of these storages is reported in line item 1.3 Regulated river. Water may also be used from lakes and wetlands within the Murray–Darling Basin (MDB), as reported in line item 1.4 Lakes and wetlands.

Storage information is categorised according to MDB surface water resources plan (WRP) areas. Storage information on a WRP area basis is summarised in the following table. Specific details of individual storages are included in the second table.

 

Summary of storage volumes in the MDB region at the start and end of the 2011–12 year
Surface water resource plan area State/Territory  Volume (ML) as at 30 June 2012  Volume (ML) as at 30 June 2011
Code Name
SW19 Warrego–Paroo–Nebine Qld
SW18 Condamine–Balonne Qld 202,732 219,992
SW17 Moonie Qld
SW16 Qld Border Rivers Qld 287,286 310,965
SW15 NSW Border Rivers NSW 277,359 309,711
SW11 Barwon–Darling Watercourse NSW
SW12 NSW Intersecting Streams NSW
SW14 Gwydir NSW 1,300,322 689,173
SW13 Namoi  NSW 815,003 560,513
SW10 Macquarie–Castlereagh NSW 1,432,008 1,242,970
Sub-total Northern Basin 4,314,709 3,333,324
SW9 Lachlan  NSW 1,352,523 1,258,748
SW8 Murrumbidgee NSW NSW 2,512,348 2,481,479
SW7 NSW Murray and Lower Darling NSW 5,302,754 5,275,563
SW3 Northern Victoria  Vic. 3,981,322 3,925,173
SW2 Vic. Murray Vic. 3,351,176 2,488,952
SW4 Wimmera–Mallee Vic. 166,225 166,971
SW6 Eastern Mount Lofty Ranges SA
SW5 SA Murray SA
SW1 ACT  ACT 206,139 201,252
Sub-total Southern Basin 16,872,487 15,798,138
Total for the region 21,187,196 19,131,462

– = Data not available

Note: Volumes shown against a WRP area are based on storages geographically located within that area. Volumes shown for NSW Murray and Lower Darling, and Victorian Murray also serve other WRP areas.

 

Details of individual storages in the MDB region at the start and end of the 2011–12 year
Water resource plan area

Sustainable diversion limit area

State/Territory

Storage name

Additional site information

Dead storage (ML)

Total capacity1 (ML)

Total storage volume2 on 30 June 2012 (ML)

Total storage volume3 on 30 June 2011 (ML)

Code

Name

SW18 Condamine–Balonne SS26 Condamine–Balonne Qld Beardmore (Lake Kajarabie) Balonne River  1,537 81,700 81,311 82,371
Qld Chinchilla Weir Condamine River  118 9,780 10,447 10,146
Qld Cooby Creek Reservoir Cooby Creek 1,464 21,166 20,855 21,052
Qld Lake Leslie Sandy Creek  2,123 106,250 88,647 104,953
Qld Neil Turner Weir Maranoa River near Mitchell 360 1,470 1,470 1,470
SW16 Qld Border rivers  SS24 Qld Border rivers  Qld Lake Coolmunda Macintyre Brook 215 69,060 42,376 60,085
Qld Lake Glenlyon  Pike Creek 1,770 252,655 244,910 250,880
SW15 NSW Border Rivers  SS23 NSW Border Rivers  NSW Pindari Lake Severn River  80 312,000 277,359 309,711
SW14 Gwydir SS22 Gwydir NSW Lake Copeton Gwydir River  18,487 1,361,395 1,300,322 689,173
SW13 Namoi  SS21 Namoi  NSW Chaffey Reservoir Peel River  2,359 61,827 61,863 62,212
NSW Lake Keepit Namoi River  6,577 425,513 422,990 415,481
NSW Split Rock Reservoir Manilla River  3,156 397,397 330,150 82,820
SW10 Macquarie–Castlereagh SS20 Macquarie–Castlereagh NSW Lake Burrendong Macquarie River  33,774 1,190,029 1,216,616 1,074,803
NSW Lake Windamere Cudgegong River  1,131 368,120 215,393 168,167
Northern Basin 73,151 4,658,362 4,314,709 3,333,324
SW9 Lachlan  SS16 Lachlan  NSW Carcoar Lake Belubula River  214 36,131 36,088 27,403
NSW Lake Brewster Lachlan River  4,561 145,369 117,193 76,652
NSW Lake Cargelligo Lachlan River  6,370 36,533 37,755 37,608
NSW Lake Wyangala Lachlan River  725 1,217,761 1,161,487 1,117,085
SW8 Murrumbidgee NSW SS15 Murrumbidgee  NSW NSW Blowering Reservoir Tumut River  23,992 1,633,852 1,552,683 1,578,588
NSW Lake Burrinjuck Murrumbidgee River  3,291 1,026,327 959,665 902,891
SW7 NSW Murray and Lower Darling SS18 Lower Darling NSW Lake Cawndilla  Darling Riverforms part of Menindee Lakes 86,080 631,052 655,200 696,780
NSW Lake Menindee4
Darling River–forms part of Menindee Lakes 60,860 629,488 661,936 717,709
NSW Lake Pamamaroo  Darling River–forms part of Menindee Lakes 28,930 277,725 343,580 347,952
NSW Lake Victoria5 River Murray  100,041 676,621 482,522 481,503
NSW Lake Wetherell  Darling River–forms part of Menindee Lakes 522 193,178 257,104 193,178
SS14 NSW Murray NSW Lake Hume6
River Murray 1,789 3,038,182 2,902,412 2,838,441
SW3 Northern Victoria SS4 Ovens Vic. Lake Buffalo  Buffalo River  3,791 23,340 13,154 13,821
Vic. Lake William Hovell King River  900 13,730 13,889 13,825
SS5 Broken  Vic. Lake Nillahcootie  Broken River 750 40,403 40,775 40,676
Vic. McCall Say Reservoir Ryans Creek 1,125 1,125 1,125
SS6 Goulburn Vic. Greens Lake  Supplements Waranga Western Channel 4,511 32,486 17,329 22,829
Vic. Lake Eildon  Goulburn River  84,011 3,334,160 2,999,379 2,912,237
Vic. Waranga Basin  Goulburn River  124,000 432,362 367,613 351,374
SS7 Campaspe Vic. Lake Eppalock  Campaspe River  1,117 304,652 271,779 294,566
Vic. Lauriston Reservoir Coliban River 1 19,790 15,270 19,726
Vic. Malmsbury Reservoir Malmsbury Reservoir on Coliban River 0 17,225 5,568 9,698
Vic. Upper Coliban Reservoir Coliban River 78 37,770 37,890 37,869
SS8 Loddon Vic. Barkers Creek Reservoir Barkers Creek 1,673 1,678 1,681
Vic. Cairn Curran Reservoir Loddon River  300 147,132 131,391 131,584
Vic. McCay Reservoir Green Creek 1,365 906 1,259
Vic. Sandhurst Reservoir Off-stream, Bendigo 2,405 1,167 1,962
Vic. Spring Gully Reservoir Spring Creek 1,680 216 994
Vic. Tullaroop Reservoir Tullaroop Creek 7,000 72,948 62,194 69,947
SW2 Vic. Murray SS2 Vic. Murray  Vic. Lake Dartmouth7
Mitta Mitta River  80,002 3,907,700 3,351,176 2,488,952
SW4 Wimmera–Mallee  SS9 Wimmera–Mallee  Vic. Lake Bellfield Fyans Creek 980 78,560 66,491 61,265
Vic. Lake Fyans Off Stream–Fyans Creek  1,010 18,460 12,581 13,409
Vic. Lake Lonsdale Mount William Creek 0 65,480 28,204 48,138
Vic. Lake Taylor Potter Creek 2,920 33,702 13,540 22,309
Vic. Toolondo Reservoir Off stream–Mt Talbot Creek 0 92,431 24,924 0
Vic. Wartook Reservoir MacKennzie River 2,000 29,300 20,485 21,850
SW1 ACT SS1 ACT ACT Bendora Reservoir Cotter River  96 11,543 9,977 9,144
ACT Corin Reservoir Cotter River  110 70,897 70,909 67,792
ACT Cotter Reservoir Cotter River  9 3,856 3,847 3,248
ACT Googong Reservoir8
Queanbeyan River  1,674 121,084 121,406 121,068
Southern Basin 632,635 18,459,478 16,872,487 15,798,138
Whole MDB region 705,786 23,117,840 21,187,196 19,131,462

– = Data not available

1–3Dead storage volumes are excluded for McCall Say, Barkers Creek, McCay, Sandhurst and Spring Gully reservoirs.
4The volume in Lake Menindee is available for Lower Darling, Victorian Murray and South Australian Murray sustainable diversion limit (SDL) areas.
5The volume in Lake Victoria is available for Victorian Murray and South Australian Murray SDL areas.
6–7The volume in Lake Hume and Lake Dartmouth is available for NSW Murray and Victorian Murray SDL areas.
8The volume in Googong Reservoir is available for Australian Capital Territory SDL area. Therefore, the reservoir is included under that SDL area although located within New South Wales.

Quantification approach

Data source

Bureau of Meteorology (the Bureau): Water storages, Australian Water Information System (AWRIS); Maranoa regional Council: information received for Neil Turner Weir; and NSW State Water Corporation: information for Lake Brewster.

Provided by

The Bureau.

Method

Storage volume is measured at the start and end of the year by using gauged water level height(s) in metres Australian height datum (mAHD) for individual storages. The height measurement is converted to a volume using the storage-volume curve(s) of the storage.

Assumptions, limitations, caveats and approximations

  • Storage-volume curves represent specifically surveyed parts of the water storage, and may not reflect the storage-volume relationship across the entire storage.
  • Water storages are subject to sedimentation and other physical changes over time, which in turn affect the accuracy of the storage-volume curves.

 

Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

The following changes resulted in the restatement of the 2010–11 year volume:

  • updated information
  • scope change.

The changes and their respective values are detailed in the table below:


Restatement of comparative year information made for the line item 1.1 storages
Segment 2012 Account volume at 30 June 2011 (ML) 2011 Account volume at 30 June 2011 (ML) Difference due to updated information and scope change (ML)
Northern Basin 3,333,324 3,333,324 0
Southern Basin 15,798,138 15,831,830 –33,692
Whole region 19,131,462 19,165,154 –33,692

Updating the 2010–11 volume was due to recalculation of the Lake Brewster volume, resulting in a 40,713 ML decrease. Scope change comprised the inclusion of McCall Say, Barkers Creek, McCay, Sandhurst and Spring Gully reservoirs, resulting in a 7,021 ML increase.