Ord
17.12 Entitled diversion of allocated surface water to urban water system
Supporting information
The volume recognised in the water accounting statements (427 ML) represents the volume of water diverted for urban water supply in the Ord region during the 2012–13 year.
Total surface water diverted from each surface water resource for urban water supply in the Ord region during the 2012–13 year is given in the following table.
Surface water resource |
Volume diverted (ML) |
Moochalabra Dam: Wyndham town supply |
427 |
Main Ord River: Lake Argyle Village supply |
– |
Total |
427 |
Quantification approach
Data source
Provided by
Method
Total water diverted from surface water resources for urban water supply within the Ord region is equal to the total annual water released from the resource during the year. The water volumes diverted are metered at the outlet continuously and reported on a monthly basis.
Assumptions, limitations, caveats and approximations
The volume of water diverted from the main Ord River channel for supply to Lake Argyle Village was not measured during the 2012–13 year. For the previous two years, the volume of water diverted to Lake Argyle Village has been approximately 20 ML. Therefore, it is likely that the reported volume of surface water diverted to the urban water supply system is slightly underestimated.
Uncertainty information
Expected error for water meters is +/– 5%.
The Department of Water requires that all water meters, when tested under in situ conditions, must be within 5% accuracy across the full flow rate range (Department of Water 2009).