Perth
17.13 Entitled diversion of allocated surface water to irrigation scheme

Supporting information

This line item volume (21,910 ML) represents the total surface water diverted for irrigation scheme supply in the Perth region during the 2012–13 year.

Total surface water diverted to each irrigation district in the Harvey Water Irrigation Area during the 2012–13 year is given in the table below.

 

Volume of water diverted to each irrigation district in the Harvey Water Irrigation Area during the 2012–13 year

Irrigation district

Water diverted

(ML)

Harvey

18,422

Waroona

3,488

Total

21,910

 

Quantification approach

Data source

Supervisory Control and Data Acquisition system.

Provided by

Harvey Water.

Method

Water inflow into the irrigation water supply system during the year is equal to the total annual water released from the storages. The water volumes released from the storages are metered at the outlet continuously and reported on a monthly basis.

Assumptions, limitations, caveats and approximations

Nil.

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 2009c).