Perth
42.6 Diversions from storages
Supporting Information
This line item refers to the total allocation diversion from storages that supply water to the urban water system. It does not includes the volume of releases to the downstream river.
Total volume of water diverted from each urban water supply storage within the Perth region during the 2010–11 year is provided in the following table.
Storage |
Diversion (ML) |
Canning |
15,113 |
Churchman Brook |
480 |
Mundaring |
27,482 |
North Dandalup |
9,641 |
Samson Brook |
1,644 |
Serpentine |
29,019 |
Serpentine Pipehead |
|
South Dandalup |
18,589 |
Stirling |
19,250 |
Victoria |
2,178 |
Wungong |
17,621 |
Total |
141,017 |
Quantification Approach
Data Source
Provided by
Method
Total water abstracted from surface water storages for urban water supply within the Perth region is equal to the total annual water released from the storages during the 2010–11 year. The water volumes released from the storages are metered at the outlet continuously and reported on a monthly basis.
Assumptions, Limitations, Caveats and Approximations
Uncertainty Information
Expected error for water meters is +/– 5%.
The Department of Water requires that all water meters, when tested in situ conditions, must be within 5% accuracy across the full flow rate range (Guidelines for water meter installation 2009).