South East Queensland
21.2 Surface water allocation announcements - urban system

Supporting Information

a. Overall

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

The following table shows allocation announcements by water supply scheme (WSS) and water resource plan (WRP) area held by urban utilities. All allocation announcements were 100% in the 2010–11 year.

Urban 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 83,995 0 0 0 0 0 0 0 83,995
Total Gold Coast WRP area 83,995 0 0 0 0 0 0 0 83,995
Logan Basin Logan River 8,910 0 0 0 0 0 0 0 8,910
Total Logan Basin WRP area 8,910 0 0 0 0 0 0 0 8,910
Moreton Central Brisbane River and Stanley River 278,725 0 0 0 0 0 0 0 278,725
Central Lockyer 0 0 0 0 0 0 0 0 0
Cressbrook Creek 10,000 0 0 0 0 0 0 0 10,000
Lower Lockyer Valley 0 0 0 0 0 0 0 0 0
Pine Valleys 59,000 0 0 0 0 0 0 0 59,000
Warrill Valley 0 0 890 1,306 0 0 0 0 2,196
Total Moreton WRP area 347,725 0 890 1,306 0 0 0 0 349,921
Total SEQ region 440,630 0 890 1,306 0 0 0 0 442,826

Notes:

  1. SEQ Water Grid Manager was granted an extra 7,700 ML of high-priority water entitlement for the 2010–11 water year in the Nerang WSS from the strategic reserve. More information on this can be found in the amended Gold Coast Resource Operation Plan (2009).



b. Urban surface water allocation remaining – reconciliation

The following table shows the 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 urban surface water allocation (around 58%).

Urban surface water entitlements have a component included within them to allow for some future population growth. A component of the forfeiture may be attributed to this reason.

Urban surface water allocation reconciliation table
Water resource plan (WRP) area Water supply scheme (WSS)

Line item 5.2

Line item 21.2

Line item 17.12

Line item 13.2

Line item 5.2

Opening balance
(ML)
Announcement (ML) Allocation diversion
(ML)
Adjustment and forfeiture (ML) Closing balance (ML)
Gold Coast Nerang 0 83,995 55,313 28,682 0
Total Gold Coast WRP area 0 83,995 55,313 28,682 0
Logan Basin Logan River 0 8,910 1,067 7,843 0
Total Logan Basin WRP area 0 8,910 1,067 7,843 0
Moreton Central Brisbane River and Stanley River 0 278,725 115,752 162,973 0
Central Lockyer 0 0 0 0 0
Cressbrook Creek 0 10,000 208 9,792 0
Lower Lockyer Valley 0 0 0 0 0
Pine Valleys 0 59,000 24,571 34,429 0
Warrill Valley 0 2,196 417 1,779 0
Total Moreton WRP area 0 349,921 140,948 208,973 0
Total SEQ region 0 442,826 197,328 245,498 0

c. Urban entitlements

For the purpose of the 2011 Account, urban claim on surface water only includes the SEQ Water Grid Manager and Toowoomba Regional Council entitlement allocations, as they have been identified as the urban holders of entitlements in the resource operation plans (ROPs).

Other organisations may hold supplemented entitlements for some form of urban use, but, as urban use is not identified on entitlements, these could not readily be identified. For this reason, a small number of entitlements that may fall into this category are included in line item 21.1 Surface water allocation announcements.

In Queensland, entitlements and allocations do not have intended use as an attribute, and all metered abstractions do not have entitlement priority or use as attributes. Urban holders of entitlements were individually determined by obtaining all entitlement volumes from the Gold Coast, Logan Basin and Moreton ROPs schedule of water allocations listed for the SEQ Water Grid Manager and Toowoomba Regional Council.

Quantification Approach

Data Source

Queensland Department of Environment and Resource Management (DERM), ROPs and announced allocation data.

Provided by

DERM.

Method

Urban holder entitlements were defined as high-priority group supplemented entitlements held by the SEQ Water Grid Manager or Toowoomba Regional Council.

The volumes of entitlement were obtained from the Moreton, Logan Basin and Gold Coast ROPs Schedule of Water Allocations (Queensland supplemented water allocations are equivalent to regulated entitlements of the 2011 Account).

Announced allocation of 100% was given for all urban utility's entitlements for the 2010–11 year, making the allocation announcements equal to the nominal entitlement volume.

Assumptions, Limitations, Caveats and Approximations

Other organisations may hold supplemented entitlements for some form of urban use, but, as urban use is not identified on entitlements, these could not readily be identified.

Uncertainty Information

There was no uncertainty associated with this value.

Comparative year

This line item corresponds to line item 25.1.2.4 Allocation announcement on regulated flows – high security, urban holder reported in the 2010 Account.

In the 2010 Account, a volume of 0 ML was provided for Cressbrook Creek WSS allocation announcements. In the 2011 Account, a value of 10,000 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 an increase in the urban entitlements shown in the 2011 Account and has required a prior period correction for 2010 Account.

The following table compares the value at 30 June 2010 reported in the 2011 Account with the corresponding value reported in the 2010 Account.

Comparative year information
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
11.18 / 21.2 25.1.2.4 Allocation announcement on regulated flows – high security , urban holder Cressbrook Creek (High Class A) 0      10,000 0 10,000 All of WSS entitlements moved to urban
Warrill Valley
(High A and High B)
0            2,196 0 2,196 Some entitlements moved to urban