Melbourne
17.11 Entitled diversion of allocated surface water to users

Supporting information

The volume presented in the water accounting statements (10,125 ML) represents the volume of water diverted for irrigation under high reliability and low reliability water shares in the Melbourne region during the 2011–12 year.

Entitled surface water diversions during the 2011–12 year
Location Metered
diversion (ML)
Diversion %
of allocation
Bacchus Marsh Irrigation District 1,731 33%
Bacchus Marsh Irrigation District supply by agreement 102 22%
Werribee Irrigation District 7,846 58%
Werribee River 446 31%
Total 10,125 49%

Quantification approach

Data source

Southern Rural Water internal records; Victorian Department of Environment and Primary Industries Victorian Water Register.

Provided by

Southern Rural Water.
Victorian Department of Environment and Primary Industries.

Method

Southern Rural Water meter surface water diversions under all high and low reliability water shares, and supply by agreements in the Melbourne region.

  • Diversion volumes for high and low reliability water shares were obtained from the Victorian Water Register.
  • Diversion volumes for supply by agreements were obtained directly from Southern Rural Water.

Assumptions, limitations, caveats and approximations

Nil.

Uncertainty information

Uncertainty is +/– 5% due to known errors in meters.

Comparative year

In the 2011 Account, the volume of surface water diverted under supply by agreements was incorrectly reported as zero. This error has been corrected in the 2012 Account. Consequently, the volume has been restated from 6,512 ML (as published in the 2011 Account) to 6,618 ML as shown in the following table.

Comparative year information for line item 17.11 Entitled diversion of allocated surface water to users
Location 2012 Account volume for the 2010–11 year (ML) 2011 Account volume for the 2010–11 year (ML)
Bacchus Marsh Irrigation District 945 945
Bacchus Marsh Irrigation District supply by agreement 106 0
Werribee Irrigation District 5,319 5,319
Werribee River 248 248
Total 6,618 6,512