South East Queensland
1.1 Storages

Supporting information

The volumetric value for the line item at the end of the 2012–13 year was 2,554,869 ML.

This line item represents the volume of water held in storages that are used mainly to administer water against entitlements. The volume reported for this line item also includes the volume of dead storage.

The volume reported in the water accounting statements represents the sum of the volumes held in the storages in the South East Queensland (SEQ) region. Specific details of individual storages are provided in the following table.  

 

Water storage volumes within South East Queensland region
Water resource plan (WRP) area

Water supply scheme (WSS)

Storage name

Total storage capacity1

Dead storage capacity

30 June 2013

30 June 2012

Change in storage

(ML)

(ML)

(ML)

(ML)

(ML)
Gold Coast Nerang Hinze1 310,730 0 308,127 291,260 16,867
Little Nerang2 6,705 0 6,628 6,808 (180)
Total Gold Coast WRP area 317,435 0    314,755 298,068 16,687
Logan Basin3 Logan River Bromelton Off-Stream Storage4 8,210 0 6,720 7,531 (811)
Cedar Grove Weir4 1,144 0 1,071 1,169 (98)
Lake Maroon2 44,319 0 46,543 46,375 168
none Leslie Harrison2 24,868 0 23,822 24,590 (768)
Wyaralong4 102,883 0 102,315 101,605 710
Total Logan Basin WRP area 181,424 0 180,471 181,270 (799)
Moreton Central Brisbane River and Stanley River Mount Crosby Weir4 3,430 0 3,453 3,687 (234)
Wivenhoe2 1,165,238 0 1,155,641 1,059,354 96,287
Somerset2 379,849 0 386,376 394,329 (7,953)
Central Lockyer Clarendon2 24,276 0 24,154 24,176 (22)
Bill Gunn2 6,947 0 6,886 6,937 (51)
Cressbrook Creek Cressbrook Creek2 81,842 1,136 79,083 80,766 (1,683)
Perseverance2 30,140 3,472 30,140 30,483 (343)
Lower Lockyer Valley Atkinson2 30,400 0 30,456 31,009 (553)
Pine Valleys North Pine3 214,302 0 189,380 212,967 (23,587)
Warrill Valley Moogerah2 83,765 0 83,243 82,418 825
none Enoggera2 4,567 0 4,632 4,709 (77)
Gold Creek2 801 0 898 874 24
Lake Kurwongbah2 14,370 0 13,947 14,485 (538)
Lake Manchester2 26,217 0 26,496 26,683 (187)
Splityard Creek4 28,700 6,400 24,858 27,456 (2,598)
Total Moreton WRP area 2,094,844 11,008 2,059,643 2,000,333 59,310
Total SEQ region 2,593,703 11,008 2,554,869 2,479,671 75,198

1 Total storage capacity does not include flood mitigation capacity. The volume in storage may be greater than the total storage capacity if the storage was retaining flood waters or spilling at the time of measurement.

2 Data obtained from the Bureau of Meteorology's Water storages within the Australian Water Resources Information System (AWRIS).

3 Despite being located within the SEQ region, Beaudesert Weir, with a total storage capacity of 9,130 ML, was not included in the 2013 Account as information was not available on storage volumes for the 2012–13 year.

4 Data obtained from Seqwater.

Quantification approach

Data source

Bureau of Meteorology (the Bureau): Water Storages, Australian Water Resources Information System (AWRIS);  Seqwater: data for Mt Crosby Weir, Cedar Grove Weir, Bromelton Off-Stream Storage, Splityard Creek Dam, and Wyaralong Dam.

Provided by

The Bureau; Seqwater.

Method

Storage-volume is measured at the start and end of the 2012–13 year by using gauged water level height(s) for individual storages. The height measurement was converted to a volume using the storage-volume curve(s) of the storage.

 

The storage volumes of individual storages were aggregated to present the total volume for the line item.

Assumptions, limitations, caveats and approximations

Storage-volume (rating) tables are constructed from 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 that affect the accuracy of the storage-volume tables.

Uncertainty information

The uncertainty estimate was not quantified.