Sydney
41.4 Transfer of water into storages
Supporting Information
This line item refers to all transfers of water into the surface water storages under various entitlements or arrangements.The total volume for this item is 115,235 ML.
Within the Sydney region, this refers to water that was transferred under the Fish River Water Supply Scheme into the storages of the Sydney Catchment Authority during the 2010–11 year, as well as tranfers and releases of water to storages that were not captured in line item 41.3 Runoff to storages. The volumes captured in this line item are provided in the following table.
| Account | Volume (ML) |
Delivery of water under inter-region agreement (see line item 9.11) |
224 |
| Transfer of water from Nepean to Avon | 10,978 |
| Transfer of water from Wingecarribee to Nepean | 14,975 |
| Release from Wingecarribee to Warragamba | 11,310 |
| Release from Cataract to Broughton Pass Weir | 38,069 |
| Release from Nepean to Broughtons Pass Weir | 34,413 |
| Release from Cordeaux to Broughtons Pass Weir | 5,266 |
| Total | 115,235 |
Quantification Approach
Data Source
Provided by
Method
Known release rates from flow meters (full bore magnetic and/or ultrasonic), orifice plates, valves with rating tables or measured outlets were used to derive the volume.
Assumptions, Limitations, Caveats and Approximations
There are minor differences in the supplied volumes recorded by the Sydney Catchment Authority and its recipients. In order to maintain consistency, the values provided by the Sydney Catchment Authority have been used for this line item.
Uncertainty Information
The volume is based on measured data. Estimated uncertainty based on meter accuracy, and professional judgment on rating tables and site configuration issues is +/– 10%.