19.17 Decrease of urban claim on surface water
For the purpose of the 2011 Account, any volume of water allocated to ACTEW under their urban water licence (line item 21.2 Surface water allocation announcements – urban water system) that has not been diverted (line item 17.12 Surface water allocation diversion – urban water system) has been considered as forfeited.
In addition to forfeited water, this line item also includes an adjustment to account for potable water releases into Googong Reservoir from Mount Stromlo Water Treatment Plant.
|Line item / adjustment||Volume (ML)|
|21.2 Surface water allocation announcements – urban water system||71,000|
|less||17.2 Surface water allocation diversion – urban water system||45,309|
|equals||Adjustment and forfeiture||30,056|
Unused allocation at the end of the reporting period (30 June 2011) was considered as forfeiture. Diversions from Bendora, Corin, Cotter and Googong reservoirs, together with diversions from the Murrumbidgee River, were subtracted from the allocated volume (line item 17.2 Surface water allocation diversion – urban system).
The potable water discharge into Googong Reservoir from Mount Stromlo Water Treatment Plant was obtained from ActewAGL. The Googong transfer was added to the allocated volume (line item 17.2 Surface water allocation diversion – urban system).
Assumptions, Limitations, Caveats and Approximations
The uncertainty estimate was not quantified.