South East Queensland
17.8 Entitled diversion of non–allocated surface water to urban water system

Supporting information

The volumetric value for the line item at the end of the 2011–12 year was 4,383 ML.

This line item consists of diversions from surface water based on unsupplemented entitlements held by urban utilities and the SEQ Water Grid Manager (Seqwater since January 2013). These diversions may be to water treatment plants (WTP) that supply the South East Queensland (SEQ) water grid or off-grid.

 

Urban unsupplemented diversions from surface water
Water resource plan (WRP) area

SEQ water grid

Water treatment plant

Volume

(ML)

Gold Coast

Total Gold Coast WRP area

0

Logan Basin On-grid Capalaba 

2,928

Off-grid Canungra 

88

Total Logan Basin WRP area

3,016

Moreton On-grid Caboolture 

1,080

Enoggera 

0

Off-grid Blackbutt and Bernarkin

85

Lockyer

           –

Preston

            –

Somerset Dam Recreation

0

Warrill View

99

Yarraman

103

Total Moreton WRP area

1,367

Total SEQ  region

4,383

           – = data not available

Quantification approach

Data source

Seqwater WaterHub database: this information was previously provided by DERM but commencing with the 2012 Account, it has since been provided by Seqwater.

Toowoomba regional Council

South Burnett regional Council

Seqwater supplemented / unsupplemented WTP list.

Provided by

Bureau of Meteorology.

Method

Metered diversion to WTP or output from WTP data was obtained from Department of Energy and Water Supply (DEWS) and respective local government councils. Wherever possible, available diversion data was used in preference to WTP output data. WTP were selected where the source was surface water and the entitlement was unsupplemented. WTPs were then separated in to the water resource plan (WRP) areas and on-grid (form part of the SEQ Water Grid) and off-grid.

Assumptions, limitations, caveats and approximations

Communities with a population of less than 50 were not captured and reported. Off-grid communities within the Gold Coast WRP area were therefore not captured.

Uncertainty information

The uncertainty estimate was not quantified.

Comparative year

This line item corresponds to line item '11.2 Non-allocated diversion of surface water' reported in the 2011 Account.