Perth
9.19 Other surface water increases
Supporting Information
This line item refers to transfers of water from the Harvey Water irrigation scheme to surface water storages within the Perth region.
Quantification Approach
Data Source
Provided by
Method
The total volume of water transferred from the irrigation scheme is based on measured inflow data at the major surface water storages. During the 2010–11 year, no such transfers of water occurred.
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).
Comparative year
The following table presents substantive changes in the line item reported in this 2011 Account with the corresponding line item in the 2010 Account.
2011 Account line item |
2010 Account line item |
2011 Account volume for the 2009–10 year (ML) |
2010 Account volume for the 2009–10 year (ML) |
Change from the 2010 Account to the 2011 Account |
9.19 Other surface water increases |
13.6.2 Delivery of traded-in water to connected surface water |
1,500 |
1,500 |
Change in line item name and number |