South East Queensland
17.11 Entitled diversion of allocated surface water to users

Supporting information

a. Overall

The volumetric value for the line item at the end of the 2012–13 year was 5,986 ML.

This line item represents the volume of water diverted from surface water by non-urban (excluding Seqwater and Toowoomba Regional Council) holders of supplemented allocations. 

 

Diversions by non-urban holders of supplemented allocations
Water resource plan (WRP) area

Water supply scheme (WSS)

Volume 

(ML)

Gold Coast Nerang

5

Total Gold Coast WRP area

5

Logan Basin Logan River

1,888

Total Logan Basin WRP area

1,888

Moreton Central Brisbane River and Stanley River

Central Lockyer

433

Cressbrook Creek

0

Lower Lockyer Valley

997

Pine Valleys

0

Warrill Valley

2,663

Total Moreton WRP area

4,093

Total SEQ region

5,986

Table Notes:

1. Central Brisbane River and Stanley River WSS supplemented allocation diversions were not available from Queensland Department of Natural Resources and Mines (DNRM) Water Management System (WMS) at the time of publication. These have been reported as (–) in the 2013 Account.

2. Cressbrook Creek WSS is used to supply water to the town of Toowoomba. All supplemented allocation diversions within the Cressbrook Creek WSS were included in line item 17.12 Entitled diversion of allocated surface water to urban water system.

3. Approved diversions took place through licences along Bright View channel and Buaraba Creek Channel for the Lower Lockyer.

4. The diversions shown in the table exclude distribution loss volumes, as these were included in line item 13.1 Adjustment and forfeiture of surface water allocation.

5. Pine Valley WSS is used exclusively for urban water supply. All supplemented allocation diversions within the Pine Valleys WSS were included in line item 17.12 'Entitled diversion of allocated surface water to urban water system'.

b. Non-urban surface water allocation remaining – reconciliation

The following table shows the non-urban surface water allocation reconciliation. A relatively lower carryover volume at the beginning of the 2012–13 year has resulted in a lower forfeiture of surface water allocation compared to that reported for the 2012 Account.

Non-urban surface water allocation reconciliation
Water resource plan (WRP) area

Water supply scheme (WSS)

Line item 5.1

Line item 21.1

Line item 17.11

Line item 13.1

Line item 5.1

Opening balance

Announcement (ML)

Allocation diversion 

Adjustment and forfeiture (ML)

Closing balance (ML)

(ML)

(ML)

Gold Coast Nerang

0

5

5

0

0

Total Gold Coast WRP area

0

5

5

0

0

Logan Basin Logan River

0

14,500

1,888

12,612

0

Total Logan Basin WRP area

0

14,500

1,888

12,612

0

Moreton Central Brisbane River and Stanley River

0

7,316

0

7,316

0

Central Lockyer

0

7,201

433

6,768

0

Cressbrook Creek1

0

0

0

0

0

Lower Lockyer Valley

12,153

12,778

997

11,781

12,153

Pine Valleys

0

0

0

0

0

Warrill Valley

0

31,504

2,663

28,841

0

Total Moreton WRP area

12,153

58,799

4,093

54,706

12,153

Total South East Queensland (SEQ) region

12,153

73,304

5,986

67,318

12,153


1Cressbrook Creek WSS is used to supply the north and north-western townships of Toowoomba Regional Council region as well as Toowoomba City.
 

Quantification approach

Data source

Seqwater: Supplemented allocation diversions. 

Provided by

Seqwater.

Method

Supplemented allocation diversions were provided by Seqwater for each water resource plan (WRP) area. The current resource operation plan reporting requirements do not allow for reporting by 'type' of use. This line item was calculated by removing the urban diversions (line item 17.12 Entitled diversion of allocated surface water to urban water system) from the total supplemented allocation diversion. This represents the remaining high-priority holders and all medium-priority holder diversions.

Assumptions, limitations, caveats and approximations

Seqwater has accepted metered data provided by water supply scheme (WSS) operators in good faith. The volume calculated excludes distribution loss, which was included in line item 13.1 Adjustment and forfeiture of surface water allocation.

Diversions for the following rural-based WSSs were not necessarily solely for irrigation purposes, and may have included some supplemented allocation diversions for urban purposes:

  • Central Lockyer WSS
  • Lower Lockyer WSS
  • Warrill Valley WSS
  • Logan River WSS.

Uncertainty information

Derived from measured data.

Comparative year

An error was made calulating the 2011-12 year volume published in the 2012 Account due to error in the estimation of entitled diversion of allocated surface water for Lower Lockyer Valley. Consequently, the volume has been restated from 5,905 ML (as published in the 2012 Account) to 5,986 ML.