Canberra
17.12 Entitled diversion of allocated surface water to urban water system
Supporting information
The volume recognised in the surface water statements is 47,838 ML that represents the total surface water diverted for urban water supply in the Canberra region during the 2012–13 year (excluding the volume taken that accounted for the transfer to the Googong Reservoir).
This line item refers to the amount of water that was diverted under ACTEW's urban water access entitlement. A breakdown of the amount of water diverted from each reservoir is provided in the following table.
Water storage / river | Volume (ML) |
Bendora Reservoir (Cotter River) | 43,995 |
Cotter Reservoir | 0 |
Googong Reservoir (Queanbeyan River) | 3,909 |
Murrumbidgee River1 | 0 |
Return to Googong Reservoir2 | (66) |
Total | 47,838 |
1 Diversions from the Murrumbidgee River as diversions are based upon the same licence as extractions from the water storages.
2 This value represents the volume of water transferred to the Googong Reservoir from the Bendora Reservoir, Cotter Reservoir or Murrumbidgee River to take advantage of the storage capacity in the Googong Reservoir presented in line item 11.2.
Quantification approach
ACTEW Water
Data source
Production records.
Provided by
ACTEW Water.
Method
The total volume taken from surface water for urban water supply in the 2012–13 reporting year was calculated as the volume diverted from the Bendora, Corin, Cotter, and Googong reservoirs together with the volume diverted from the Murrumbidgee River. These are metered volumes obtained from the ACTEW Water production records.
The total volume presented in this line item excludes the water transferred to the Googong Reservoir from the Bendora Reservoir, Cotter Reservoir and/or Murrumbidgee River to take advantage of the storage capacity in the Googong Reservoir presented in line item 11.2.
Assumptions, limitations, caveats and approximations
The volume of water reported in this line item captures the total volume diverted from the water storages and the Murrumbidgee River excluding the transfer to Googong.
Uncertainty information
Derived from measured data. Estimated uncertainty is +/–5%.