South East Queensland
21.1 Surface water allocation announcements

Supporting Information

a. Overall

This line item consists of all surface water allocation announcements with the exception of announcements for entitlements held by urban utilities.

The following table shows the allocation announcements for various priority groups by water supply scheme (WSS) and water resource plan (WRP) area. Announced allocations for all the WSSs at the start of the water year were 100%. Once announced allocation reaches 100% it cannot be decreased in the water year.

Interim water allocations are provided for Central Lockyer, Warrill Valley and Lower Lockyer under interim resource operation licence (IROL) (Central Lockyer Valley WSS), July 2008; IROL (Warrill Valley WSS), amended August 2008; and IROL (Lower Lockyer Valley WSS), July 2008.

Priority classes can be found in the relevant resource operation plans (ROPs).

Non-urban surface water allocation announcements
Water resource plan (WRP) area Water supply scheme (WSS) Water resource plan priority group Total
High Class A or High
(ML)
High Distribution Loss
(ML)
High A
(ML)
High B
(ML)
Medium
(ML)
Medium Distribution Loss
(ML)
Risk A
(ML)
Risk A and B
(ML)
Gold Coast Nerang 5 0 0 0 0 0 0 0 5
Total Gold Coast WRP area 5 0 0 0 0 0 0 0 5
Logan Basin Logan River 946 0 0 0 13,554 0 0 0 14,500
Total Logan Basin WRP area 946 0 0 0 13,554 0 0 0 14,500
Moreton Central Brisbane River and Stanley River 275 0 0 0 7,041 0 0 0 7,316
Central Lockyer 0 184 0 0 3,507 0 395 3,115 7,201
Cressbrook Creek 0 0 0 0 0 0 0 0 0
Lower Lockyer Valley 0 0 0 0 11,278 1,500 0 0 12,778
Pine Valleys 0 0 0 0 0 0 0 0 0
Warrill Valley 0 0 0 7,254 20,536 3,714 0 0 31,504
Total Moreton WRP area 275 184 0 7,254 42,362 5,214 395 3,115 58,799
Total SEQ region 1,226 184 0 7,254 55,916 5,214 395 3,115 73,304

Notes:

  1. Value of 0 ML provided for Cressbrook Creek WSS allocation announcements as this has been transferred to line item 21.2 Surface water allocation announcements – urban water system.

b. Non-urban surface water allocation remaining – reconciliation

The following table shows the  non-urban surface water allocation reconciliation. Due to the very wet year, demand was lower than in previous years and combined with the 100% allocation announcements, this has resulted in a higher forfeiture of surface water allocation.

Non-urban surface water allocation reconciliation table
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
(ML)
Announcement (ML) Allocation diversion
(ML)
Adjustment and forfeiture (ML) Closing balance (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 NA 7,316 0
Central Lockyer 0 7,201 433 6,768 0
Cressbrook Creek 0 0 0 0 0
Lower Lockyer Valley 11,676 12,778 916 11,304 12,234
Pine Valleys 0 0 0 0 0
Warrill Valley 0 31,504 2,663 28,841 0
Total Moreton WRP area 11,676 58,799 4,012 54,229 12,234
Total SEQ region 11,676 73,304 5,905 66,841 12,234


Quantification Approach

Data Source

Queensland Department of Environment and Resource Management (DERM) resource operation plans and interim resource operation licences. Seqwater: Water supply scheme operator and resource operation licence holder.

Provided by

DERM.

Method

The volume was calculated by multiplying the nominal allocation volume (equivalent to entitlements in the 2011 Account) stated in the ROP or IROL by the announced allocation percentage. Data were then sorted into water security type and WSS. Urban holders of supplementary licences were then removed individually from the data and included in line item 21.2 Surface water allocation announcements – urban water system.

Assumptions, Limitations, Caveats and Approximations

None.

Uncertainty Information

Derived from measured data. DERM reliability and accuracy rating is A2.

Comparative year

This line item corresponds to line item 25.1.9.7 Allocation announcement on regulated flows – other lumped holders reported in the 2010 Account.

In the 2010 Account a volume of 10,000 ML was provided for Cressbrook Creek WSS allocation announcements. . In the 2011 Account, a value of 0 ML was provided for Cressbrook Creek WSS allocation announcements as these entitlements should have been listed as urban entitlements. Similarly, 2,196 ML of entitlements from the Warrill Valley WSS should have been listed as urban entitlements. This has resulted in a decrease in the non-urban entitlements shown in the 2011 Account and has required a prior period correction for 2010 Account as shown in the following table. Announcements on these entitlements can be seen in line item 21.2 Surface water allocation announcements – urban water system.

There was a prior period error in the 2010 Account for the Logan River WSS medium priority class.

The following table compares the value at 30 June 2010 reported in the 2011 Account with the corresponding value reported in the 2010 Account for the components of this line item that changed. The total for this line item in the 2010 Account was 92,148 ML and the comparative year volume reported in the 2011 Account was 79,949 ML.

Comparative year information – line item 21.1 Surface water allocation announcements
2011 Account line item 2010 Account line item Water supply scheme Volume reported in the 2010 Account
(ML)
Prior period error correction
(ML)
Volume difference due to scope change
(ML)
Restated volume reported in the 2011 Account
(ML)
Additional information
21.1 Surface water allocation announcements 25.1.9.7 Allocation announcement on regulated flows – other lumped holders Logan River (Medium Priority) 13,557 –3 0 13,554 Error in calculation
Cressbrook Creek (High Class A)   10,000 –10,000 0 0 All of WSS entitlements moved to urban
Warrill Valley
(High A and High B)
33,700 –2,196 0 31,504 Some entitlements moved to urban