Sydney

                                                                                                   

14.7.9.7 Allocation diversion of regulated flows—other lumped holders (banked environmental flow release)

                             

Supporting information   


The Sydney Catchment Authority (SCA) released 2,450 ML from the banked environmental flow to provide a contingent environmental flow from Woronora Reservoir in February 2010. Line item 8.1.9.7 provides more details about banked environmental flow.

 

Quantification approach   


Data source

  • SCA and NSW Office of Water agreement.
  • Daily Return System (DRS) database.
  • SCA compliance reporting to the NSW Office of Water.

 

Data provider

The Sydney Catchment Authority.

 

Method

Valve rating tables and stream gauging downstream of Woronora Reservoir for high environmental flow release.

 

Uncertainty

The volume is based on measured data. Estimated uncertainty based on accuracy of stream gauging is +/–10%.

 

Approximations, assumptions, caveats/limitations

Nil.