Sydney

The volume for the line item is 1,825 ML.

The Sydney Catchment Authority (SCA) was entitled to 1,825 ML carryover volume from the Fish River Water Supply Scheme (FRWSS) at the beginning of 2009–10. The carryover volume was an inter-basin claim to receive water to the reservoirs managed by the SCA.

The right to receive the carryover volume from the FRWSS was suspended in March 2010 because Oberon Reservoir (FRWSS supply reservoir) fell below 10% capacity. Consequently, no carryover volume was available at the end of 2009–10 for abstraction. The carryover volume would be available for abstraction once the supply reservoir reaches an adequate level, because the right was suspended (not forfeited).

Data source

Sydney Catchment Authority databases.

Data provider

The Sydney Catchment Authority.

Method

The volume for the line item was calculated from carryover volume available at the beginning of a year, annual allocation and metered supply volume from the FRWSS. The metered supply volume to the SCA is based on flow measurements using a turbine helix-type flow meter.

Uncertainty

The volume for the line item is based on measured data. Estimated uncertainty based on meter accuracy is +/–2%.

Approximations, assumptions, caveats/limitations

Nil.